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Line 32: − + − [[file:M106Ch12Fig02.jpg|thumb|300px|{{figure number|2}}Bouguer gravity (right) and total magnetic field (left) maps of Iraq, from Jassim and Goff,<ref name=Jassimandgoff_2006>Jassim, S. Z. and Goff, J. C., 2006, Geology of Iraq: Dolin, Prague, and Moravian Museum, Brno, 341 p.</ref> compiled by GEOSURV. The gravity map shows low values in the Zagros foldbelt and Mesopotamian foredeep due to the thick sedimentary section. Orientations of features trend to the north and northwest in southern, western, and northwestern Iraq, interpreted in part to be caused by the structural grain of Precambrian accreted terrains. 200 km (124.3 mi).]]+ + + + − + − − [[file:M106Ch12Fig03.jpg|thumb|300px|{{figure number|3}}Map of tectonic provinces of Iraq, showing major structural features. Fields and significant wells with oil and/or gas shows are shown; numbers refer to Tables 1–5. Red lines are approximate locations of stratigraphic charts in [[:file:M106Ch12Fig04.jpg|Figure 4]] and [[:file:M106Ch12Fig05.jpg|Figure 5]].]] − [[file:M106Ch12Fig04.jpg|thumb|300px||{{figure number|4}}Regional geologic cross section, which extends NE across central Iraq, from the Arabian platform of southwestern Iraq, at the border with Saudi Arabia, across the Mesopotamian Foredeep and Zagros foldbelt in eastern Iraq and adjacent Iran, and ending at the Sirjan-Sanandaj zone in Iran.]]+ + + + − + − The main part of the Zagros foldbelt is topographically lower and is characterized by large anticlines trending to the northwest. In the southwestern part of the foldbelt, synclinal areas are covered by Neogene sediments. In the northwestern part of the foldbelt, Paleogene strata are exposed in synclines. The Zagros foldbelt forms a large structural embayment, called the Kirkuk embayment, in the overall Zagros foldbelt. Many oil and gas fields occur within this zone, as shown in [[:file:M106Ch12Fig03.jpg|Figure 3]], including the super-giant Kirkuk field.+ − − − + Line 64:
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| topg = 467
| topg = 467
| author = George J. Grabowski Jr.
| author = George J. Grabowski Jr.
| link = http://archives.datapages.com/data/specpubs/memoir106/data/i_aapg-sp1960379.htm
| link = http://archives.datapages.com/data/specpubs/memoir106/data/379_aapg-sp1960379.htm
| pdf =
| pdf =
| store = http://store.aapg.org/detail.aspx?id=1139
| store = http://store.aapg.org/detail.aspx?id=1139
| isbn = 9780891813866
| isbn = 9780891813866
}}
}}
There are more than 100 oil and gas fields in Iraq, containing more than 137 billion barrels of recoverable oil and more than 106 TCF of recoverable gas. Of this large resource, about 25 billion barrels of oil and 11 TCF of gas have been produced as of 2014.
There are more than 100 oil and gas fields in Iraq, containing more than 137 billion barrels of recoverable oil and more than 106 TCF of recoverable gas. Of this large resource, about 25 billion barrels of oil and 11 TCF of gas have been produced as of 2014.
Nearly all of the oil and gas occurs in fields located within the Mesopotamian foredeep, Gotnia Basin, and Zagros foldbelt. Minor discoveries and shows have been found on the Arabian platform along the western flank of the Mesopotamian foredeep. There is one gas discovery (Akkas field) on the Arabian platform in western Iraq.
Nearly all of the oil and gas occurs in fields located within the Mesopotamian foredeep, Gotnia Basin, and Zagros foldbelt. Minor discoveries and shows have been found on the Arabian platform along the western flank of the Mesopotamian foredeep. There is one gas discovery (Akkas field) on the Arabian platform in western Iraq.
Ninety-eight percent of the oil and gas occurs in reservoirs of Cenozoic and Cretaceous age. The largest reserves occur in: 1) carbonate rocks of the Kirkuk Group (Lower Miocene–Oligocene), in fields within the Zagros foldbelt of northeastern Iraq, the largest being Kirkuk field; 2) carbonate rocks of the Mishrif Formation (Turonian–Cenomanian), in fields within the Mesopotamian foredeep and Zagros foldbelt in southern and central Iraq, including Rumaila, West Qurna, Majnoon, Halfayah, Zubair, and Buzurgan fields; and 3) siliciclastic rocks of the Zubair Formation (Albian–Barremian), in fields within the Mesopotamian foredeep and Zagros foldbelt in southern and central Iraq, including East Baghdad, Rumaila, West Qurna, and Zubair fields. Large reserves also occur in carbonate rocks of the Upper Cretaceous above the Mishrif Formation and in the Lower Cretaceous below the Zubair Formation. Smaller reserves occur in other Neogene and Paleogene carbonates and siliciclastics, in Jurassic and Triassic carbonates, and in Ordovician siliciclastics.
Ninety-eight percent of the oil and gas occurs in reservoirs of Cenozoic and Cretaceous age. The largest reserves occur in: 1) [[carbonate]] rocks of the Kirkuk Group (Lower Miocene–Oligocene), in fields within the Zagros foldbelt of northeastern Iraq, the largest being Kirkuk field; 2) carbonate rocks of the Mishrif Formation (Turonian–Cenomanian), in fields within the Mesopotamian foredeep and Zagros [[fold]]belt in southern and central Iraq, including Rumaila, West Qurna, Majnoon, Halfayah, Zubair, and Buzurgan fields; and 3) [[siliciclastic]] rocks of the Zubair Formation (Albian–Barremian), in fields within the Mesopotamian foredeep and Zagros foldbelt in southern and central Iraq, including East Baghdad, Rumaila, West Qurna, and Zubair fields. Large reserves also occur in carbonate rocks of the Upper Cretaceous above the Mishrif Formation and in the Lower Cretaceous below the Zubair Formation. Smaller reserves occur in other Neogene and Paleogene carbonates and [[siliciclastic]]s, in Jurassic and Triassic carbonates, and in Ordovician siliciclastics.
Most of the oil and gas that have been discovered were generated from organic-rich, oil-prone carbonates of the Jurassic Sargelu and Naokelekan Formations. These source rocks are widely distributed and mature for oil and gas generation across the Mesopotamian foredeep and Zagros foldbelt. Lesser amounts of oil and gas are derived from: 1) Upper and Lower Cretaceous oil-prone source rocks within the Zagros foldbelt; 2) Triassic oil-prone source rocks in northwestern Iraq; and 3) Silurian gas-prone source rocks in western Iraq. The oil generated from the Jurassic source rocks migrated vertically to fill stacked reservoir intervals in many fields. Lateral migration of oil occurred along the western margin of the Mesopotamian foredeep, as proven by small fields and large seeps that are located where source rocks are absent or immature for oil or gas generation.
Most of the oil and gas that have been discovered were generated from organic-rich, oil-prone carbonates of the Jurassic Sargelu and Naokelekan Formations. These source rocks are widely distributed and mature for oil and gas generation across the Mesopotamian foredeep and Zagros foldbelt. Lesser amounts of oil and gas are derived from: 1) Upper and Lower Cretaceous oil-prone source rocks within the Zagros foldbelt; 2) Triassic oil-prone source rocks in northwestern Iraq; and 3) Silurian gas-prone source rocks in western Iraq. The oil generated from the Jurassic source rocks migrated vertically to fill stacked reservoir intervals in many fields. Lateral migration of oil occurred along the western margin of the Mesopotamian foredeep, as proven by small fields and large seeps that are located where source rocks are absent or immature for oil or gas generation.
==Physiography==
==Physiography==
The southern and western parts of Iraq are part of the broader Arabian platform of adjacent Syria, Jordan, Saudi Arabia, and Kuwait ([[:file:M106Ch12Fig01.jpg|Figure 1]]). This is a sparsely populated area of desert and low hills, mostly 300–500 m (984–1640 ft) above sea level (msl). The highest elevation here occurs at Jabal ‘Unayzah, in the southwestern corner of the country, at 940 msl. Bedrock is exposed in these areas, largely Cenozoic but Mesozoic and Paleozoic in western Iraq.
The southern and western parts of Iraq are part of the broader Arabian platform of adjacent Syria, Jordan, Saudi Arabia, and Kuwait ([[:file:M106Ch12Fig01.jpg|Figure 1]]). This is a sparsely populated area of desert and low hills, mostly 300–500 m (984–1640 ft) above sea level (msl). The highest elevation here occurs at Jabal ‘Unayzah, in the southwestern corner of the country, at 940 msl. [[Bedrock]] is exposed in these areas, largely [[Cenozoic]] but Mesozoic and [[Paleozoic]] in western Iraq.
The land slopes down to the floodplains of the Al Furat (Euphrates) and Dijlah (Tigris) Rivers, which flow from Turkey and Syria through the length of Iraq to the Gulf of Arabia via the Shatt al Arab. The elevation at the Iraq–Syria border is 300–400 msl. Al Furat follows the Anah Graben until it reaches the subsiding Mesopotamian foredeep ([[:file:M106Ch12Fig01.jpg|Figure 1]]). The Dijlah flows around the uplifted Sinjar Graben to flow across the low portion of the Zagros foldbelt to the Mesopotamian foredeep. The floodplains are covered by alluvium, terrace gravels, and eolian sands. There are many towns and cities, including Baghdad, An Nasiriyah, and Basrah, in the floodplains of these rivers.
The land slopes down to the floodplains of the Al Furat (Euphrates) and Dijlah (Tigris) Rivers, which flow from Turkey and Syria through the length of Iraq to the Gulf of Arabia via the Shatt al Arab. The elevation at the Iraq–Syria border is 300–400 msl. Al Furat follows the Anah Graben until it reaches the subsiding Mesopotamian foredeep ([[:file:M106Ch12Fig01.jpg|Figure 1]]). The Dijlah flows around the uplifted Sinjar Graben to flow across the low portion of the Zagros foldbelt to the Mesopotamian foredeep. The floodplains are covered by alluvium, terrace gravels, and eolian sands. There are many towns and cities, including Baghdad, An Nasiriyah, and Basrah, in the floodplains of these rivers.
Elevations rise in northeastern Iraq. Most of the Kirkuk embayment of the Zagros foldbelt is covered by Neogene sediments, except for elongated northwest-trending anticlines that expose older strata. Surface elevations rise up to 850 m (2788 ft) on the Qara Chauq Dagh anticline ([[:file:M106Ch12Fig01.jpg|Figure 1]]). There are many towns and cities in this region, including Mosul and Kirkuk.
Elevations rise in northeastern Iraq. Most of the Kirkuk embayment of the Zagros foldbelt is covered by Neogene sediments, except for elongated northwest-trending anticlines that expose older strata. Surface elevations rise up to 850 m (2788 ft) on the Qara Chauq Dagh anticline ([[:file:M106Ch12Fig01.jpg|Figure 1]]). There are many towns and cities in this region, including Mosul and Kirkuk.
The High Zagros Nappe zone further to the northeast is characterized by large anticlinal mountains that expose Cenozoic to Paleozoic sediments as well as igneous and metamorphic rocks. Elevations are higher across this region, reaching 3586 m (11765 ft) on the Iraq-Iran border east of Rowandaz (Figure 1). Major gorges cut by rivers, such as the Zab River that runs into the Dijlah River near Jabal Qara Chauq Dagh, form exposures that are the type sections for many formations.
The High Zagros [[Nappe]] zone further to the northeast is characterized by large anticlinal mountains that expose Cenozoic to Paleozoic sediments as well as igneous and metamorphic rocks. Elevations are higher across this region, reaching 3586 m (11765 ft) on the Iraq-Iran border east of Rowandaz (Figure 1). Major gorges cut by rivers, such as the Zab River that runs into the Dijlah River near Jabal Qara Chauq Dagh, form exposures that are the type sections for many formations.
One effect of the surface relief of Iraq is the flow of groundwater deeply within the sediments of the Mesopotamian foredeep, from the somewhat higher Arabian platform in western and southern Iraq, as well as within synclines in the Kirkuk embayment of the Zagros foldbelt. Freshwater extends far into the subsurface because of these flows.
One effect of the surface relief of Iraq is the flow of groundwater deeply within the sediments of the Mesopotamian foredeep, from the somewhat higher Arabian platform in western and southern Iraq, as well as within synclines in the Kirkuk embayment of the Zagros foldbelt. Freshwater extends far into the subsurface because of these flows.
<gallery mode=packed heights=200px widths=200px>
M106Ch12Fig02.jpg|{{figure number|2}}Bouguer gravity (right) and total magnetic field (left) maps of Iraq, from Jassim and Goff,<ref name=Jassimandgoff_2006>Jassim, S. Z. and Goff, J. C., 2006, Geology of Iraq: Dolin, Prague, and Moravian Museum, Brno, 341 p.</ref> compiled by GEOSURV. The gravity map shows low values in the Zagros foldbelt and Mesopotamian foredeep due to the thick sedimentary section. Orientations of features trend to the north and northwest in southern, western, and northwestern Iraq, interpreted in part to be caused by the structural grain of Precambrian accreted terrains. 200 km (124.3 mi).
M106Ch12Fig03.jpg|{{figure number|3}}Map of tectonic provinces of Iraq, showing major structural features. Fields and significant wells with oil and/or gas shows are shown; numbers refer to Tables 1–5. Red lines are approximate locations of stratigraphic charts in [[:file:M106Ch12Fig04.jpg|Figure 4]] and [[:file:M106Ch12Fig05.jpg|Figure 5]].
</gallery>
==Tectonic setting==
==Tectonic setting==
Iraq is located in the northern part of the Arabian tectonic plate. The basement rocks are presumed to be accretionary rocks assembled during the Late Precambrian Pan-African orogeny, although no wells reach the basement rock in Iraq. Bouguer gravity values are low in the northeast, presumably due to the extreme thickness of sedimentary rocks ([[:file:M106Ch12Fig02.jpg|Figure 2]]), and become progressively higher to the west onto the Khleisia High (Rutbah subzone of Jassim and Goff<ref name=Jassimandgoff_2006 />) along the Iraq–Syria border. North- and northwest-trending basement grains are interpreted from gravity and magnetic data in southern, western, and northwestern Iraq as shown in [[:file:M106Ch12Fig02.jpg|Figure 2]].
Iraq is located in the northern part of the Arabian [[tectonic plate]]. The [[basement]] rocks are presumed to be accretionary rocks assembled during the Late Precambrian Pan-African [[orogeny]], although no wells reach the basement rock in Iraq. Bouguer gravity values are low in the northeast, presumably due to the extreme thickness of sedimentary rocks ([[:file:M106Ch12Fig02.jpg|Figure 2]]), and become progressively higher to the west onto the Khleisia High (Rutbah subzone of Jassim and Goff<ref name=Jassimandgoff_2006 />) along the Iraq–Syria border. North- and northwest-trending basement grains are interpreted from gravity and magnetic data in southern, western, and northwestern Iraq as shown in [[:file:M106Ch12Fig02.jpg|Figure 2]].
Northeastern Iraq, contiguous with Iran and Turkey, is part of the Zagros foldbelt, consisting of two zones ([[:file:M106Ch12Fig03.jpg|Figure 3]]). The High Zagros Nappe zone is a topographically high region characterized by tightly folded rocks and by ophiolite which was obducted onto the Arabian plate in the Late Cretaceous ([[:file:M106Ch12Fig04.jpg|Figure 4]]). Cretaceous and older sedimentary rocks and a suite of igneous and metamorphic rocks crop out in this region ([[:file:M106Ch12Fig05.jpg|Figure 5]]). There are no oil and gas discoveries in the High Zagros Nappe zone, although rocks containing bitumen and organic-rich rocks are exposed.
Northeastern Iraq, contiguous with Iran and Turkey, is part of the Zagros foldbelt, consisting of two zones ([[:file:M106Ch12Fig03.jpg|Figure 3]]). The High Zagros Nappe zone is a topographically high region characterized by tightly folded rocks and by ophiolite which was obducted onto the Arabian plate in the Late Cretaceous ([[:file:M106Ch12Fig04.jpg|Figure 4]]). Cretaceous and older sedimentary rocks and a suite of igneous and metamorphic rocks crop out in this region ([[:file:M106Ch12Fig05.jpg|Figure 5]]). There are no oil and gas discoveries in the High Zagros Nappe zone, although rocks containing bitumen and organic-rich rocks are exposed.
<gallery mode=packed heights=200px widths=200px>
M106Ch12Fig04.jpg|{{figure number|4}}Regional geologic cross section, which extends NE across central Iraq, from the Arabian platform of southwestern Iraq, at the border with Saudi Arabia, across the Mesopotamian Foredeep and Zagros foldbelt in eastern Iraq and adjacent Iran, and ending at the Sirjan-Sanandaj zone in Iran.
M106Ch12Fig05.jpg|{{figure number|5}}Regional geologic cross section which extends NE across western Iraq, from the Arabian platform at the border with Jordan, across the Mesopotamian Foredeep and Zagros foldbelt in northwestern Iraq, and ending in adjacent Turkey.
</gallery>
[[file:M106Ch12Fig05.jpg|thumb|300px|{{figure number|5}}Regional geologic cross section which extends NE across western Iraq, from the Arabian platform at the border with Jordan, across the Mesopotamian Foredeep and Zagros foldbelt in northwestern Iraq, and ending in adjacent Turkey.]]
The main part of the Zagros foldbelt is topographically lower and is characterized by large [[anticline]]s trending to the northwest. In the southwestern part of the foldbelt, synclinal areas are covered by Neogene [[sediment]]s. In the northwestern part of the foldbelt, [[Paleogene]] strata are exposed in [[syncline]]s. The Zagros foldbelt forms a large structural embayment, called the Kirkuk embayment, in the overall Zagros foldbelt. Many oil and gas fields occur within this zone, as shown in [[:file:M106Ch12Fig03.jpg|Figure 3]], including the super-giant Kirkuk field.
The central portion of Iraq is the Mesopotamian foredeep, an area of relatively [[deep-water]] deposition in the Mesozoic and Cenozoic that formed in front of, and which is less deformed than, the Zagros foldbelt ([[:file:M106Ch12Fig06.jpg|Figure 6]]). Structural features trend to the northwest in the Mesopotamian foredeep, parallel to the Zagros foldbelt trends, and are formed by both detached and basement-involved faults ([[:file:M106Ch12Fig04.jpg|Figure 4]], [[:file:M106Ch12Fig06.jpg|Figure 6]]). Bouguer-gravity values are low in this foredeep ([[:file:M106Ch12Fig02.jpg|Figure 2]]), reflecting the thick sedimentary section. There are many oil and gas fields in the Mesopotamian foredeep ([[:file:M106Ch12Fig03.jpg|Figure 3]]), including the large East Baghdad field.
The central portion of Iraq is the Mesopotamian foredeep, an area of relatively deep-water deposition in the Mesozoic and Cenozoic that formed in front of, and which is less deformed than, the Zagros foldbelt ([[:file:M106Ch12Fig06.jpg|Figure 6]]). Structural features trend to the northwest in the Mesopotamian foredeep, parallel to the Zagros foldbelt trends, and are formed by both detached and basement-involved faults ([[:file:M106Ch12Fig04.jpg|Figure 4]], [[:file:M106Ch12Fig06.jpg|Figure 6]]). Bouguer-gravity values are low in this foredeep ([[:file:M106Ch12Fig02.jpg|Figure 2]]), reflecting the thick sedimentary section. There are many oil and gas fields in the Mesopotamian foredeep ([[:file:M106Ch12Fig03.jpg|Figure 3]]), including the large East Baghdad field.
[[file:M106Ch12Fig06.jpg|thumb|300px|{{figure number|6}}Interpretation from megaseismic line 7 (reproduced from Mohammed,<ref name=Mohammed_2007>Mohammed, S. A. G., 2006, Megaseismic section across the northeastern slope of the Arabian plate, Iraq: GeoArabia, v. 11, no. 4, p. 77–102.</ref> by permission from GeoArabia), which extends from the Arabian platform of southwestern Iraq across the Mesopotamian Foredeep to the Zagros foldbelt in eastern Iraq. 50 km (31.1 mi).]]
[[file:M106Ch12Fig06.jpg|thumb|300px|{{figure number|6}}Interpretation from megaseismic line 7 (reproduced from Mohammed,<ref name=Mohammed_2007>Mohammed, S. A. G., 2006, Megaseismic section across the northeastern slope of the Arabian plate, Iraq: GeoArabia, v. 11, no. 4, p. 77–102.</ref> by permission from GeoArabia), which extends from the Arabian platform of southwestern Iraq across the Mesopotamian Foredeep to the Zagros foldbelt in eastern Iraq. 50 km (31.1 mi).]]
The southern part of the Mesopotamian foredeep is contiguous with the northern extension of the Gotnia Basin, an area of subsidence and deep-shelfal salt deposition during the Jurassic that extends into adjacent Kuwait. The Gotnia Basin (called the Zubair zone by Jassim and Goff<ref name=Jassimandgoff_2006 />) is characterized by broad, low-angle anticlines that trend and plunge to the north. These anticlines form many oil and gas fields, including the super-giant Rumaila, West Qurna, Zubair, and Majnoon fields ([[:file:M106Ch12Fig03.jpg|Figure 3]]). Values of both Bouguer gravity and total magnetics are low ([[:file:M106Ch12Fig02.jpg|Figure 2]]), indicating a thick sedimentary sequence with a non-magnetic basement.
The southern part of the Mesopotamian foredeep is contiguous with the northern extension of the Gotnia Basin, an area of subsidence and deep-shelfal salt deposition during the Jurassic that extends into adjacent Kuwait. The Gotnia Basin (called the Zubair zone by Jassim and Goff<ref name=Jassimandgoff_2006 />) is characterized by broad, low-angle anticlines that trend and plunge to the north. These anticlines form many oil and gas fields, including the super-giant Rumaila, West Qurna, Zubair, and Majnoon fields ([[:file:M106Ch12Fig03.jpg|Figure 3]]). Values of both Bouguer gravity and total [[magnetics]] are low ([[:file:M106Ch12Fig02.jpg|Figure 2]]), indicating a thick sedimentary sequence with a non-magnetic basement.
The Zagros foldbelt and Mesopotamian foredeep end at the Khleisia High (Rutbah subzone of Jassim and Goff<ref name=Jassimandgoff_2006 />), a region of shallow basement and thin sedimentary cover, as interpreted from the high values of the Bouguer gravity map ([[:file:M106Ch12Fig02.jpg|Figure 2]]) and from the deep Khleisia 1 well which drilled to the Ordovician ([[:file:M106Ch12Fig05.jpg|Figure 5]]). Several east-trending extensional grabens that formed in the Late Cretaceous cut across and form the northern and southern boundaries of the Khleisia High ([[:file:M106Ch12Fig03.jpg|Figure 3]]). These include the Anah and Ashtar Grabens to the south ([[:file:M106Ch12Fig05.jpg|Figure 5]]), which appear as relatively low in the total magnetics map ([[:file:M106Ch12Fig02.jpg|Figure 2]]), and the inverted Sinjar Graben to the north, which is a low on Bouguer gravity. There are only a few small fields in northwestern Iraq ([[:file:M106Ch12Fig03.jpg|Figure 3]]).
The Zagros foldbelt and Mesopotamian foredeep end at the Khleisia High (Rutbah subzone of Jassim and Goff<ref name=Jassimandgoff_2006 />), a region of shallow basement and thin sedimentary cover, as interpreted from the high values of the Bouguer gravity map ([[:file:M106Ch12Fig02.jpg|Figure 2]]) and from the deep Khleisia 1 well which drilled to the Ordovician ([[:file:M106Ch12Fig05.jpg|Figure 5]]). Several east-trending extensional grabens that formed in the Late Cretaceous cut across and form the northern and southern boundaries of the Khleisia High ([[:file:M106Ch12Fig03.jpg|Figure 3]]). These include the Anah and Ashtar Grabens to the south ([[:file:M106Ch12Fig05.jpg|Figure 5]]), which appear as relatively low in the total magnetics map ([[:file:M106Ch12Fig02.jpg|Figure 2]]), and the inverted Sinjar Graben to the north, which is a low on Bouguer gravity. There are only a few small fields in northwestern Iraq ([[:file:M106Ch12Fig03.jpg|Figure 3]]).
==Oil and gas fields==
==Oil and gas fields==
Table 1 lists the discoveries in Iraq (information in part from Jassim and Goff<ref name=Jassimandgoff_2006 />; Verma et al.<ref name=Vermaetal_2004>Verma, M. K., Ahlbrandt, T. S., and Al-Gailani, M., 2004, Petroleum reserves and undiscovered resources in the total petroleum systems of Iraq: Reserve growth and production implications: GeoArabia, v. 9, no. 3, p. 51–74.</ref>), along with the hydrocarbon type and age of the main reservoir. The numbers refer to the locations of the fields as shown in [[:file:M106Ch12Fig03.jpg|Figure 3]]. Table 2 lists the fields by hydrocarbon type, structural province, structural style and trap type, source name, age and strata type, and volumes of in-place, estimated ultimate recoverable (EUR), produced, and remaining ultimate recoverable (RUR) oil and gas. The volumes data for oil and gas come mainly from Verma et al.<ref name=Vermaetal_2004 /> and Jassim and Goff,<ref name=Jassimandgoff_2006 /> except as noted in other references in this article.
Table 1 lists the discoveries in Iraq (information in part from Jassim and Goff<ref name=Jassimandgoff_2006 />; Verma et al.<ref name=Vermaetal_2004>Verma, M. K., Ahlbrandt, T. S., and Al-Gailani, M., 2004, Petroleum reserves and undiscovered resources in the total petroleum systems of Iraq: Reserve growth and production implications: GeoArabia, v. 9, no. 3, p. 51–74.</ref>), along with the [[hydrocarbon]] type and age of the main reservoir. The numbers refer to the locations of the fields as shown in [[:file:M106Ch12Fig03.jpg|Figure 3]]. Table 2 lists the fields by hydrocarbon type, structural province, structural style and trap type, source name, age and strata type, and volumes of in-place, estimated ultimate recoverable (EUR), produced, and remaining ultimate recoverable (RUR) oil and gas. The volumes data for oil and gas come mainly from Verma et al.<ref name=Vermaetal_2004 /> and Jassim and Goff,<ref name=Jassimandgoff_2006 /> except as noted in other references in this article.
{| class = "wikitable"
{| class = "wikitable"
|}
|}
Table 3 lists the reservoir horizons and seals in fields that have produced oil and gas. The same information is shown for undeveloped fields in Table 4 and for small discoveries and wells with shows in Table 6. Table 5 lists information by show number and show structure.
Table 3 lists the reservoir horizons and seals in fields that have produced oil and gas. The same information is shown for undeveloped fields in Table 4 and for small discoveries and wells with shows in Table 5.
There are 107 oil discoveries and nine gas discoveries in Iraq. The majority of these are in the Zagros foldbelt (53), the Mesopotamian foredeep (22), and the Gotnia Basin (18), and they account for over 98% of the oil and gas discovered.
There are 107 oil discoveries and nine gas discoveries in Iraq. The majority of these are in the Zagros foldbelt (53), the Mesopotamian foredeep (22), and the Gotnia Basin (18), and they account for over 98% of the oil and gas discovered.
| 15 || 78 || Abu Ghirab || Jeribe/Euphrates/Kirkuk || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
| 15 || 78 || Abu Ghirab || Jeribe/Euphrates/Kirkuk || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
|-
|-
| 44 || 78 || Abu Ghirab || Mishrif || Late Cretaceous || Carbonate || Khasib || Arg limestone ||
| 44 || 78 || Abu Ghirab || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
|-
| 46 || 78 || Abu Ghirab || Mauddud || Early Cretaceous || Carbonate || Ahmadi || Shale ||
| 46 || 78 || Abu Ghirab || Mauddud || Early Cretaceous || Carbonate || Ahmadi || Shale ||
| 40 || 6 || Ain Zalah || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale || "First Pay"
| 40 || 6 || Ain Zalah || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale || "First Pay"
|-
|-
| 42 || 6 || Ain Zalah || Mushorah/Qamchuqa || Late Cretaceous || Carbonate || Shiranish || Arg limestone || "Second Pay"
| 42 || 6 || Ain Zalah || Mushorah/Qamchuqa || Late Cretaceous || Carbonate || Shiranish || Argillaceous limestone || "Second Pay"
|-
|-
| 10 || 45 || Ajil || Fatha || Miocene || Carbonate || Fatha || Evaporite ||
| 10 || 45 || Ajil || Fatha || Miocene || Carbonate || Fatha || Evaporite ||
| 55 || 45 || Ajil || Gotnia || Late Jurassic || Carbonate || Gotnia || Evaporite ||
| 55 || 45 || Ajil || Gotnia || Late Jurassic || Carbonate || Gotnia || Evaporite ||
|-
|-
| 60 || 45 || Ajil || Sargelu || Middle Jurassic || Carbonate || Naokelekan || Arg limestone ||
| 60 || 45 || Ajil || Sargelu || Middle Jurassic || Carbonate || Naokelekan || Argillaceous limestone ||
|-
|-
| 12 || 34 || Bai Hassan || Jeribe/Kirkuk Group/Jaddala || Miocene-Oligocene-Eocene || Carbonate || Fatha || Evaporite ||
| 12 || 34 || Bai Hassan || Jeribe/Kirkuk Group/Jaddala || Miocene-Oligocene-Eocene || Carbonate || Fatha || Evaporite ||
| 40 || 34 || Bai Hassan || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale ||
| 40 || 34 || Bai Hassan || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale ||
|-
|-
| 43 || 34 || Bai Hassan || Lower Kimetan || Late Cretaceous || Carbonate || Upper Kometan || Arg limestone ||
| 43 || 34 || Bai Hassan || Lower Kimetan || Late Cretaceous || Carbonate || Upper Kometan || Argillaceous limestone ||
|-
|-
| 46 || 34 || Bai Hassan || Mauddud || Early Cretaceous || Carbonate || Dokan || Arg limestone ||
| 46 || 34 || Bai Hassan || Mauddud || Early Cretaceous || Carbonate || Dokan || Argillaceous limestone ||
|-
|-
| 48 || 34 || Bai Hassan || Shuaiba || Early Cretaceous || Carbonate || Upper Sarmord || Arg limestone ||
| 48 || 34 || Bai Hassan || Shuaiba || Early Cretaceous || Carbonate || Upper Sarmord || Argillaceous limestone ||
|-
|-
| 41 || 62 || Balad || Hartha/Sadi || Late Cretaceous || Carbonate || Upper Hartha || Arg limestone ||
| 41 || 62 || Balad || Hartha/Sadi || Late Cretaceous || Carbonate || Upper Hartha || Argillaceous limestone ||
|-
|-
| 43 || 62 || Balad || Khasib || Late Cretaceous || Carbonate || Tanuma || Shale ||
| 43 || 62 || Balad || Khasib || Late Cretaceous || Carbonate || Tanuma || Shale ||
| 40 || 11 || Butmah || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale || "First Pay"
| 40 || 11 || Butmah || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale || "First Pay"
|-
|-
| 70 || 11 || Butmah || Kurra Chine/Geli Khana || Late Triassic || Carbonate || Kurra Chine || Arg limestone & anhydrite || "Triassic Pay"
| 70 || 11 || Butmah || Kurra Chine/Geli Khana || Late Triassic || Carbonate || Kurra Chine || Argillaceous limestone & anhydrite || "Triassic Pay"
|-
|-
| 12 || 80 || Buzurgan || Jeribe/Kirkuk Group || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
| 12 || 80 || Buzurgan || Jeribe/Kirkuk Group || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
|-
|-
| 44 || 80 || Buzurgan || Mishrif || Late Cretaceous || Carbonate || Khasib || Arg limestone ||
| 44 || 80 || Buzurgan || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
|-
| 10 || 52 || Chia Surkh || Fatha || Miocene || Carbonate || Fatha || Evaporite ||
| 10 || 52 || Chia Surkh || Fatha || Miocene || Carbonate || Fatha || Evaporite ||
| 10 || 63 || East Baghdad || Jeribe/Euphrates || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
| 10 || 63 || East Baghdad || Jeribe/Euphrates || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
|-
|-
| 41 || 63 || East Baghdad || Hartha/Sadi || Late Cretaceous || Carbonate || Upper Hartha || Arg limestone ||
| 41 || 63 || East Baghdad || Hartha/Sadi || Late Cretaceous || Carbonate || Upper Hartha || Argillaceous limestone ||
|-
|-
| 43 || 63 || East Baghdad || Tanuma || Late Cretaceous || Carbonate || Sadi || Arg limestone ||
| 43 || 63 || East Baghdad || Tanuma || Late Cretaceous || Carbonate || Sadi || Argillaceous limestone ||
|-
|-
| 44 || 63 || East Baghdad || Khasib || Late Cretaceous || Carbonate || Tanuma || Shale ||
| 44 || 63 || East Baghdad || Khasib || Late Cretaceous || Carbonate || Tanuma || Shale ||
|-
|-
| 45 || 63 || East Baghdad || Mishrif || Late Cretaceous || Carbonate || Khasib || Arg limestone ||
| 45 || 63 || East Baghdad || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
|-
| 47 || 63 || East Baghdad || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
| 47 || 63 || East Baghdad || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
| 12 || 79 || Jabal Fauqi || Jeribe/Euphrates/Kirkuk Group || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
| 12 || 79 || Jabal Fauqi || Jeribe/Euphrates/Kirkuk Group || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
|-
|-
| 44 || 79 || Jabal Fauqi || Mishrif || Late Cretaceous || Carbonate || Khasib || Arg limestone ||
| 44 || 79 || Jabal Fauqi || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
|-
| 12 || 41 || Jambur || Jeribe || Miocene || Carbonate || Fatha || Evaporite || "First Pay"
| 12 || 41 || Jambur || Jeribe || Miocene || Carbonate || Fatha || Evaporite || "First Pay"
| 12 || 36 || Khabbaz || Jeribe/Kirkuk Group || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
| 12 || 36 || Khabbaz || Jeribe/Kirkuk Group || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
|-
|-
|
| 46 || 36 || Khabbaz || Upper Qamchuqa || Early Cretaceous || Carbonate || || ||
|-
| 48 || 36 || Khabbaz || Lower Qamchuqa || Early Cretaceous || Carbonate || || ||
|-
| 22 || 32 || Kirkuk || Kirkuk Group || Oligocene || Carbonate || Fatha || Evaporite || "Main Limestone"
|-
| 30 || 32 || Kirkuk || Pila Spi/Avanah/Jaddala || Late-Middle Eocene || Carbonate || Fatha || Evaporite || "Main Limestone"
|-
| 40 || 32 || Kirkuk || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale ||
|-
| 43 || 32 || Kirkuk || Lower Kometan || Late Cretaceous || Carbonate || Upper Kometan || Argillaceous limestone ||
|-
| 46 || 32 || Kirkuk || Mauddud || Early Cretaceous || Carbonate || Dokan || Argillaceous limestone ||
|-
| 48 || 32 || Kirkuk || Shuaiba || Early Cretaceous || Carbonate || Upper Sarmord || Argillaceous limestone ||
|-
| 47 || 111 || Luhais || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 49 || 111 || Luhais || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale ||
|-
| 12 || 59 || Naft Khana || Jeribe || Miocene || Carbonate || Fatha || Evaporite ||
|-
| 12 || 23 || Qaiyarah || Jeribe/Euphrates || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
|-
| 41 || 23 || Qaiyrah || Hartha || Late Cretaceous || Carbonate || Shiranish || Marl ||
|-
| 10 || 107 || Rumaila North || Fatha || Miocene || Carbonate || Fatha || Evaporite-Marl ||
|-
| 44 || 107 || Rumaila North || Mishrif || Late Cretaceous || Carbonate || Upper Mishrif || Dense limestone ||
|-
| 47 || 107 || Rumaila North || Nahr Umr || Early Cretaceous || Santstone || Upper Nahr Umr || Shale ||
|-
| 48 || 107 || Rumaila North || Shuaiba || Early Cretaceous || Carbonate || Lower Nahr Umr || Shale ||
|-
| 49 || 107 || Rumaila North || Aubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale || "Main Pay"
|-
| 51 || 107 || Rumaila North || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 58 || 107 || Rumaila North || Najmah || Late-Middle Jurassic || Carbonate || Gotnia || Evaporite ||
|-
| 64 || 107 || Rumaila North || Mus || Early Jurassic || Carbonate || Alan || Evaporite ||
|-
| 10 || 107 || Rumaila South || Fatha || Miocene || Carbonate || Fatha || Evaporite-Marl ||
|-
| 44 || 107 || Rumaila South || Mishrif || Late Cretaceous || Carbonate || Upper Mishrif || Dense limestone ||
|-
| 47 || 107 || Rumaila South || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 49 || 107 || Rumaila South || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale ||
|-
| 47 || 109 || Subba || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 49 || 109 || Subba || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale ||
|-
| 51 || 109 || Subba || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 40 || 2 || Sufaiyah || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale ||
|-
| 42 || 2 || Sufaiyah || Kometan || Late Cretaceous || Carbonate || Shiranish || Marl || "Massive Limestone"
|-
| 44 || 2 || Sufaiyah || Gir Bir || Late Cretaceous || Carbonate || Gir Bir || Argillaceous limestone ||
|-
| 78 || 2 || Sufaiyah || Kurra Chine || Late Triassic || Carbonate || Kurra Chine || Evaporite ||
|-
| 30 || 1 || Tawke || Pila Spi || Late-Middle Eocene || Carbonate || Fatha || Evaporite || Press Releases
|-
| 40 || 1 || Tawke || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale || Press Releases
|-
| 48 || 1 || Tawke || Qamchuqa || Early Cretaceous || Carboante || || || Press Releases
|-
| 44 || 46 || Tikrit || Khasib/Mishrif || Late Cretaceous || Carbonate || Tanuma || Shale ||
|-
| 46 || 46 || Tikrit || Mauddud || Early Cretaceous || Carbonate || || ||
|-
| 47 || 46 || Tikrit || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 49 || 46 || Tikrit || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale ||
|-
| 42 || 106 || West Qurna || Sadi || Late Cretaceous || Carbonate || Hartha || Argillaceous limestone ||
|-
| 43 || 106 || West Qurna || Khasib || Late Cretaceous || Carbonate || Tanuma || Shale ||
|-
| 44 || 106 || West Qurna || Mishrif/Rumaila || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| 45 || 106 || West Qurna || Mauddud || Late Cretaceous || Carbonate || Ahmadi || Shale ||
|-
| 49 || 106 || West Qurna || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale ||
|-
| 50 || 106 || West Qurna || Ratawi || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 51 || 106 || West Qurna || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 66 || 106 || West Qurna || Alan || Early Jurassic || Carbonate || Sargelu || Shale ||
|-
| 58 || 106 || West Qurna || Najmah || Late-Middle Jurassic || Carbonate || Gotnia || Evaporite ||
|-
| 10 || 103 || Zubair || Fatha || Miocene || Carbonate || Fatha || Evaporite-Marl || "First Pay"
|-
| 44 || 103 || Zubair || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone || "Second Pay"
|-
| 47 || 103 || Zubair || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 49 || 103 || Zubair || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale || "Third Pay"
|-
| 49.5 || 103 || Zubair || Zubair || Early Cretaceous || Sandstone || Middle Zubair || Shale || "Fourth Pay"
|-
| 51 || 103 || Zubair || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|}
{| class = "wikitable"
|-
|+ {{table number|4}}List of reservoir name, age, and strata type, and seal name and strata type, for oil and gas fields that have not been produced. Field number refers to locations shown in [[:file:M106Ch12Fig03.jpg|Figure 3]].
! Age Sort || Field # || Field Name || Reservoir Name || Reservoir Age || Reservoir Strata Type || Seal Name || Seal Strata Type || Comments
|-
| 41 || 72 || Ahdab || Hartha || Late Cretaceous || Carbonate || Shiranish || Marl ||
|-
| 43 || 72 || Ahdab || Khasib || Late Cretaceous || Carbonate || Tanuma || Shale ||
|-
| 44 || 72 || Ahdab || Mishrif/Rumaila || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| 46 || 72 || Ahdab || Mauddud || Early Cretaceous || Carbonate || Ahmadi || Shale ||
|-
| 48 || 72 || Ahdab || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 48 || 72 || Ahdab || Shuaiba || Early Cretaceous || Carbonate || Nahr Umr || Shale ||
|-
| 90 || 51 || Akkas || Khabour || Ordovician || Sandstone || Akkas || Shale ||
|-
| 43 || 84 || Amara || Khasib || Late Cretaceous || Carbonate || Tanuma || Shale ||
|-
| 44 || 84 || Amara || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| 46 || 84 || Amara || Mauddud/Nahr Umr || Early Cretaceous || Carbonate || Ahmadi || Shale ||
|-
| 46 || 70 || Badrah || Mauddud || Early Cretaceous || Carbonate || Ahmadi || Shale ||
|-
| || 121 || Bazian || || Cretaceous ? || || || || Press Releases
|-
| || 120 || Bijeel || || Jurassic ? || || || || Press Releases
|-
| 40 || 29 || Binabawi || Upper Qamchuqa || Late Cretaceous || Carbonate || Tanuma || Shale ||
|-
| 40 || 29 || Binabawi || Kurra Chine || Late Triassic || Carbonate || Kurra Chine || Evaporite ||
|-
| 70 || 4 || Bohaira || Kurra Chine || Late Triassic || Carbonate || Kurra Chine || Evaporite ||
|-
| 30 || 31 || Chemchemal || Pila Spi || Late-Middle Eocene || Carbonate || Fatha || Evaporite ||
|-
| 40 || 31 || Chemchemal || Shiranish || Late Cretaceous || Carbonate || Upper Shiranish || Marl ||
|-
| 43 || 31 || Chemchemal || Kometan || Late Cretaceous || Carbonate || Lower Shiranish || Marl ||
|-
| 30 || 27 || Demir Dagh || Pila Spi || Late-Middle Eocene || Carbonate || Fatha || Evaporite ||
|-
| 40 || 27 || Demir Dagh || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale ||
|-
| 41 || 27 || Demir Dagh || Bekhme || Late Cretaceous || Carbonate || Upper Shiranish || Marl ||
|-
| 49 || 71 || Dhafriya || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale ||
|-
| 41 || 93 || Diwan || Hartha/Sadi || Late Cretaceous || Carbonate || Upper Hartha || Argillaceous limestone ||
|-
| 47 || 93 || Diwan || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 50 || 93 || Diwan || Ratawi/Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 58 || 93 || Diwan || Najmah/Sargelu || Late-Middle Jurassic || Carbonate || Gotnia || Evaporite ||
|-
| 42 || 88 || Dujaila || Sadi || Late Cretaceous || Carbonate || Sadi || Marl ||
|-
| 44 || 88 || Dujaila || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| 44 || 90 || Gharraf || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| 49 || 90 || Gharraf || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale ||
|-
| 51 || 90 || Gharraf || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 8 || 54 || Gilabat || Injana || Miocene || Sandstone || Injana || Shale ||
|-
| 10 || 54 || Gilabat || Fatha || Miocene || Carbonate || Fatha || Evaporite-Marl ||
|-
| 12 || 54 || Gilabat || Jeribe/Euphrates || Miocene-Oligocene || Carbonate || Fatha || Evaporite-Marl ||
|-
| 40 || 8 || Gusair || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale ||
|-
| 46 || 8 || Gusair || Mauddud || Early Cretaceous || Carbonate || Mushorah || Evaporite ||
|-
| 12 || 83 || Halfaya || Jeribe/Euphrates/Kirkuk || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
|-
| 42 || 83 || Halfaya || Sadi/Tanuma || Late Cretaceous || Carbonate || Hartha || Argillaceous limestone ||
|-
| 44 || 83 || Halfaya || Khasib || Late Cretaceous || Carbonate || Tanuma || Shale ||
|-
| 44 || 83 || Halfaya || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| 47 || 83 || Halfaya || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 51 || 83 || Halfaya || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 13 || 44 || Hamrin || Jeribe/Euphrates || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
|-
| 44 || 44 || Hamrin || Mishrif/Rumaila || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| || 26 || Hawler (Benenan) || Alan || Early Jurassic || Carbonate || Alan || Evaporite || Press Releases
|-
| 41 || 82 || Huwaiza || Hartha || Late Cretaceous || Carbonate || Upper Hartha || Argillaceous limestone ||
|-
| 42 || 82 || Huwaiza || Sadi || Late Cretaceous || Carbonate || Hartha || Argillaceous limestone ||
|-
| 43 || 82 || Huwaiza || Khasib || Late Cretaceous || Carbonate || Tanuma || Shale ||
|-
| 44 || 82 || Huwaiza || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| 47 || 82 || Huwaiza || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 40 || 55 || Injana || Shiranish || Late Cretaceous || Carbonate || Aaliji || Marl ||
|-
| 41 || 55 || Injana || Kometan || Late Cretaceous || Carbonate || Shiranish || Marl ||
|-
| 22 || 33 || Ismail || Kirkuk Group || Oligocene || Carbonate || Fatha || Evaporite ||
|-
| 12 || 57 || Jaria Pika || Jeribe/Dhiban/Euphrates/Serikagni || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
|-
| 12 || 21 || Jawan || Jeribe/Euphrates || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
|-
| 41 || 21 || Jawan || Hartha || Late Cretaceous || Carbonate || Shiranish || Marl ||
|-
| 12 || 43 || Judaida || Jeribe || Miocene || Carbonate || Fatha || Evaporite ||
|-
| 14 || 33 || Judaida || Dhiban || Miocene || Carbonate || Dhiban || Evaporite ||
|-
| 20 || 43 || Judaida || Euphrates || Oligocene || Carbonate || Dhiban || Evaporite ||
|-
| 22 || 43 || Judaida || Kirkuk Group || Oligocene || Carbonate || Basal Serikagni || Evaporite ||
|-
| 43 || 43 || Judaida || Kometan || Late Cretaceous || Carbonate || Kometan || Shale ||
|-
| 12 || 38 || Khanuqah || Jeribe/Euphrates/Kirkuk || Miocene || Carbonate || Fatha || Evaporite ||
|-
| 10 || 56 || Khashm Al Ahmar || Fatha || Miocene || Carbonate || Fatha || Evaporite ||
|-
| 12 || 56 || Khashm Al Ahmar || Jeribe/Dhiban/Euphrates/Serikagni || Miocene || Carbonate || Fatha || Evaporite ||
|-
| 47 || 75 || Kifl || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 49 || 75 || Kifl || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale ||
|-
| 58 || 75 || Kifl || Najmah/Sargelu || Late-Middle Jurassic || Carbonate || Gotnia || Evaporite ||
|-
| 12 || 40 || Kor Mor || Jeribe/Euphrates/Kirkuk || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
|-
| 44 || 87 || Kumait || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| 47 || 87 || Kumait || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| || 118 || Kurdamir || Kirkuk Group || Oligocene || Carbonate || Fatha || Evaporite || Press Releases
|-
| || 118 || Kurdamir || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale || Press Releases
|-
| 9 || 98 || Majnoon || Ghar || Miocene || Sandstone || Fatha || Evaporite-Marl ||
|-
| 8 || 98 || Majnoon || Fatha || Miocene || Carbonate || Fatha || Evaporite-Marl ||
|-
| 40 || 98 || Majnoon || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale ||
|-
| 41 || 98 || Majnoon || Hartha || Late Cretaceous || Carbonate || Shiranish || Marl ||
|-
| 42 || 98 || Majnoon || Sadi || Late Cretaceous || Carbonate || Hartha || Argillaceous Limestone ||
|-
| 43 || 98 || Majnoon || Khasib || Late Cretaceous || Carbonate || Tanuma || Shale ||
|-
| 44 || 98 || Majnoon || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| 46 || 98 || Majnoon || Ahmadi || Early Cretaceous || Carbonate || Ahmadi || Shale ||
|-
| 47 || 98 || Majnoon || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 48 || 98 || Majnoon || Shuaiba || Early Cretaceous || Carbonate || Nahr Umr || Shale ||
|-
| 49 || 98 || Majnoon || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale ||
|-
| 51 || 98 || Majnoon || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 12 || 25 || Makhmour || Jeribe/Euphrates || Miocene || Carbonate || Fatha || Evaporite ||
|-
| 41 || 25 || Makhmour || Hartha || Late Cretaceous || Carbonate || Upper Hartha || Argillaceous limestone ||
|-
| 10 || 60 || Mansuriya || Fatha || Miocene || Carbonate || Fatha || Evaporite ||
|-
| 12 || 60 || Mansuriya || Heribe || Miocene || Carbonate || Fatha || Evaporite ||
|-
| 14 || 60 || Mansuriya || Dhiban || Miocene || Carbonate || Dhiban || Evaporite ||
|-
| 41 || 77 || Merjan || Hartha || Late Cretaceous || Carbonate || Upper Hartha || Argillaceous limestone ||
|-
| || 117 || Miran West || Shiranish || Late Cretaceous || Carbonate || Upper Shiranish || Marl || Press Releases
|-
| || 117 || Miran West || Kometan || Late Cretaceous || Carbonate || || || Press Releases
|-
| || 117 || Miran West || Up Qamchuqa || Late Cretaceous || Carbonate || Tanuma || Shale || Press Releases
|-
| 8 || 91 || Nahr Umr/Bin Umar || Dibdibba || Miocene || Sandstone || Dibdibba || Marl ||
|-
| 9 || 91 || Nahr Umr/Bin Umar || Fatha/Ghar || Miocene || Carbonate/Sandstone || Fatha || Marl ||
|-
| 43 || 91 || Nahr Umr/Bin Umar || Khasib/Mishrif || Late Cretaceous || Carbonate || Tanuma || Shale ||
|-
| 47 || 91 || Nahr Umr/Bin Umar || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 49 || 91 || Nahr Umr/Bin Umar || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale ||
|-
| 51 || 91 || Nahr Umr/Bin Umar || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 41 || 64 || Nahrawan || Hartha || Late Cretaceous || Carbonate || Upper Hartha || Argillaceous limestone ||
|-
| 44 || 64 || Nahrawan || Tanuma || Late Cretaceous || Carbonate || Sadi || Argillaceous limestone ||
|-
| 45 || 64 || Nahrawan || Khasib || Late Cretaceous || Carbonate || Tanuma || Shale ||
|-
| 20 || 22 || Najmah || Jeribe/Euphrates || Miocene-Oligocene || Carbonate || Fatha || Evaporite ||
|-
| 41 || 22 || Najmah || Hartha || Late Cretaceous || Carbonate || Shiranish || Marl ||
|-
| 44 || 91 || Nasiriyah || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| 47 || 91 || Nasiriyah || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 50 || 91 || Nasiriyah || Ratawi || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 51 || 91 || Nasiriyah || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 12 || 58 || Nau Doman || Jeribe || Miocene || Carbonate || Fatha || Evaporite ||
|-
| 44 || 81 || Noor || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| 47 || 81 || Noor || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
|12 || 42 || Pulkhana || Jeribe || Miocene || Carbonate || Fatha || Evaporite ||
|-
| 20 || 42 || Pulkhana || Euphrates || Oligocene || Carbonate || Dhiban || Evaporite ||
|-
| 40 || 42 || Pulkhana || Shiranish || Late Cretaceous || Carbonate || Aaliji || Marl ||
|-
| 12 || 53 || Qumar || Jeribe || Miocene || Carbonate || Fatha || Evaporite ||
|-
| 46 || 35 || Qara Chauq || Mauddud/Jawan || Early Cretaceous || Carbonate || Dokan || Argillaceous limestone ||
|-
| 51 || 35 || Qara Chauq || Lower Sarmord || Early Cretaceous || Carbonate || Lower Sarmord || Shale ||
|-
| 61 || 35 || Qara Chauq || Gotnia || Late Jurassic || Carbonate || Gotnia || Evaporite-Marl ||
|-
| 68 || 35 || Qara Chauq || Butmah || Early Jurassic-Late Triassic || Carbonate || Adaiyah || Evaporite ||
|-
| 12 || 20 || Qasab || Jeribe || Miocene || Carbonate || Fatha || Evaporite ||
|-
| 20 || 20 || Qasab || Euphrates || Oligocene || Carbonate || Dhiban || Evaporite ||
|-
| 41 || 20 || Qasab || Hartha || Late Cretaceous || Carbonate || Shiranish || Marl ||
|-
| 47 || 112 || Rachi || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 49 || 112 || Rachi || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale ||
|-
| 51 || 112 || Rachi || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 44 || 89 || Rafidain || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| 46 || 89 || Rafidain || Mauddud || Early Cretaceous || Carbonate || Ahmadi || Shale ||
|-
| 47 || 89 || Rafidain || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 49 || 89 || Rafidain || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale ||
|-
| 50 || 89 || Rafidain || Ratawi || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 51 || 89 || Rafidain || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 44 || 108 || Ratawi || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| 45 || 108 || Ratawi || Ahmadi || Late Cretaceous || Carbonate || Ahmadi || Shale ||
|-
| 46 || 108 || ratawi || Mauddud || Early Cretaceous || Carbonate || Ahmadi || Shale ||
|-
| 47 || 108 || Ratawi || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 51 || 108 || Ratawi || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 51 || 85 || Rifaee || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 41 || 13 || Sarjoon || Hartha || Late Cretaceous || Carbonate || Shiranish || Marl ||
|-
| 44 || 13 || Sarjoon || Mishrif || Late Cretaceous || Carbonate || Mushorah || Argillaceous limestone ||
|-
| || 116 || Shaikan || Sarmord || Early Cretaceous || Carbonate || || || Press Releases
|-
| || 116 || Shaikan || Barsarin-Mus || Late-Early Jurassic || Carbonate || || || Press Releases
|-
| || 116 || Shaikan || Butmah-Baluti || Early Jurassic-Late Triassic || Carbonate || Adaiyah || Evaporite || Press Releases
|-
| || 116 || Shaikan || Kurra Chine || Late Triassic || Carbonate || || || Press Releases
|-
| || 200 || Shakal || Jaddala || Late-Middle Eocene || Carbonate || Fatha || Evaporite || Press Releases
|-
| 49 || 101 || Siba || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale ||
|-
| 51 || 101 || Siba || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 30 || 30 || Taq Taq || Pila Spi || Late-Middle Eocene || Carbonate || Fatha || Evaporite-Marl ||
|-
| 40 || 30 || Taq Taq || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale ||
|-
| 43 || 30 || Taq Taq || Lower Kometan || Late Cretaceous || Carbonate || Upper Kometan || Argillaceous limestone ||
|-
| 48 || 30 || Taq Taq || Qamchuqa || Early Cretaceous || Carbonate || Upper Sarmord || Argillaceous limestone ||
|-
| 12 || 61 || Tel Ghazal || Jeribe || Miocene || Carbonate || Fatha || Evaporite ||
|-
| 14 || 61 || Tel Ghazal || Dhiban || Miocene || Carbonate || Dhiban || Evaporite ||
|-
| 20 || 61 || Tel Ghazal || Euphrates || Oligocene || Carbonate || Dhiban || Evaporite ||
|-
| 10 || 105 || Tuba || Fatha || Miocene || Carbonate || Fatha || Evaporite-Marl || "First Pay"
|-
| 44 || 105 || Tuba || MIshrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone || "Second Pay"
|-
| 47 || 105 || Tuba || Nahr Umr || Early Cretaceous || Sandstone || Nahr Umr || Shale ||
|-
| 49 || 105 || Tuba || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale || "Third Pay"
|-
| 49 || 105 || Tuba || Zubair || Early Cretaceous || Sandstone || Middle Zubair || Shale || "Fourth Pay"
|-
| 51 || 105 || Tuba || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|}
|}
The major reservoirs in Iraq are Cretaceous, and these are the main reservoirs in 69 discoveries. The recoverable reserves in Cretaceous reservoirs in all fields are estimated to be between 59 and 101 gbo and 15 to 55 tcfg. Similar, there are 32 discoveries with mainly Cenozoic reservoirs, with 24–46 gbo and 14–41 tcfg recoverable in all Cenozoic reservoirs. Only 10 discoveries are mainly in Triassic reservoirs, with recoverable reserves of 400–500 mbo and up to 6 tcfg, and three discoveries mainly from Jurassic reservoirs, with 580–1500 mbo and no gas. Estimates of up to 6 tcfg of gas occur in the Paleozoic at Akkas field, with shows in Khleisia 1.
The major [[reservoir]]s in Iraq are Cretaceous, and these are the main reservoirs in 69 discoveries. The recoverable reserves in Cretaceous reservoirs in all fields are estimated to be between 59 and 101 gbo and 15 to 55 tcfg. Similar, there are 32 discoveries with mainly Cenozoic reservoirs, with 24–46 gbo and 14–41 tcfg recoverable in all Cenozoic reservoirs. Only 10 discoveries are mainly in Triassic reservoirs, with recoverable reserves of 400–500 mbo and up to 6 tcfg, and three discoveries mainly from Jurassic reservoirs, with 580–1500 mbo and no gas. Estimates of up to 6 tcfg of gas occur in the Paleozoic at Akkas field, with shows in Khleisia 1.
{| class = "wikitable"
|-
|+ {{table number|5}}List of reservoir name, age, and strata type, and seal name and strata type, for wells with reported oil and/or gas shows. Comment field indicates where informatio comes from. Field number refers to locations shown in [[:file:M106Ch12Fig03.jpg|Figure 3]].
! Age Sort || Show # || Show Structure || Reservoir Name || Reservoir Age || Reservoir Strata Type || Seal Name || Seal Strata Type || Comments
|-
| 10 || 5 || Abtakh || Fatha || Miocene || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 12 || 5 || Abtakh || Jeribe || Miocene || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 40 || 5 || Abtakh || Shiranish/Hartha || Late Cretaceous || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 42 || 5 || Abtakh || Mushorah || Late Cretaceous || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 64 || 5 || Abtakh || Mus || Early Jurassic || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 68 || 5 || Abtakh || Butmah || Early Jurassic-Late Triassic || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 70 || 5 || Abtakh || Kurra Chine || Late Triassic || Carboante || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 75 || 5 || Abtakh || Geli Khana || Middle Triassic || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 22 || 69 || Abu Jir || Kirkuk Group || Oligocene || Carbonate || Euphrates || Argillaceous limestone ||
|-
| 50 || 115 || Abu Kheima || Ratawi || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 51 || 115 || Abu Kheima || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 55 || 115 || Abu Kheima || Gotnia || Late Jurassic || Carbonate || Chia Gara || Argillaceous limestone ||
|-
| 58 || 115 || Abu Kheima || Najmah || Late-Middle Jurassic || Carbonate || Gotnia || Evaporite ||
|-
| 68 || 18 || Adaiyah || Butmah/Kurra Chine || Early Jurassic\Late Triassic || Carbonate || Butmah || Shale ||
|-
| 20 || 73 || Afaq || Jeribe/Euphrates || Miocene || Carbonate || Fatha || Marl ||
|-
| 41 || 73 || Afaq || Hartha || Late Cretaceous || Carbonate || Upper Hartha || Argillaceous limestone ||
|-
| 45 || 73 || Afaq || Ahmadi || Late Cretaceous || Carbonate || Ahmadi || Shale ||
|-
| 46 || 73 || Afaq || Mauddud || Early Cretaceous || Carbonate || Mauddud || Argillaceous limestone ||
|-
| 12 || 14 || Ain Ghazal || Jeribe || Miocene || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 20 || 14 || Ain Ghazal || Euphrates || Oligocene || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 60 || 12 || Alan || Sargelu || Middle Jurassic || Carbonate || Sarmord || Marl ||
|-
| 70 || 12 || Alan || Kurra Chine || Late Triassic || Carbonate || Kurra Chine || Evaporite-Marl ||
|-
| 42 || 50 || Anah || Mushorah || Late Cretaceous || Carbonate || || ||
|-
| 68 || 50 || Anah || Alan/Mus/Adaiyah/Butmah || Early Jurassic-Late Triassic || Carbonate || Alan || Evaporite ||
|-
| 65 || 17 || Atshan || Adaiyah || Early Jurassic || Carbonate || Adaiyah || Evaporite ||
|-
| 70 || 17 || Atshan || Kurra Chine/Geli Khana || Late-Middle Triassic || Carbonate || Baluti || Shale ||
|-
| 47 || 68 || Awasil || Nahr Umr || Early Cretaceous || Sandstone || Mauddud || Shale ||
|-
| 55 || 68 || Awasil || Gotnia || Late Jurassic || Carbonate || Sarmord || Shale ||
|-
| 41 || 65 || Fallujah || Hartha || Late Cretaceous || Carbonate || Shiranish || Marl ||
|-
| 44 || 65 || Fallujah || Maotsi || Late Cretaceous || Carbonate || Maotsi || Evaporite-Marl ||
|-
| 55 || 65 || Fallujah || Najmah || Late Jurassic || Carbonate || Gotnia || Evaporite ||
|-
| 47 || 94 || Ghalaisan || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 8 || 54 || Gilabat || Injana || Miocene || Sandstone || Injana || Shale ||
|-
| 10 || 54 || Gilabat || Fatha || Miocene || Carbonate || Fatha || Evaporite-Marl ||
|-
| 12 || 7 || Gullar || Jeribe || Miocene || Carbonate || Fatha || Evaporite-Marl ||
|-
| 42 || 7 || Gullar || Mushorah || Late Cretaceous || Carbonate || Shiranish || Marl ||
|-
| 15 || 24 || Hibbarah || Jeribe/Euphrates || Miocene-Oligocene || Carbonate || Fatha || Evaporite-Marl ||
|-
| 41 || 24 || Hibbarah || Hartha || Late Cretaceous || Carbonate || Shiranish || Argillaceous limestone ||
|-
| 46 || 24 || Hibbarah || Jawan || Early Cretaceous || Carbonate || Jawan || Evaporite-Marl ||
|-
| 22 || 67 || Hit || Euphrates/Kirkuk Group || Oligocene || Carbonate || Fatha || Evaporite-Marl ||
|-
| 41 || 67 || Hit || Hartha || Late Cretaceous || Carbonate || Shiranish || Marl ||
|-
| 70 || 16 || Ibrahim || Kurra Chine || Late Triassic || Carbonate || Kurra Chine || Argillaceous limestone ||
|-
|m 40 || 9 || Jabal Kand || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale ||
|-
| 40 || 104 || Jabel Sanam || Ahmadi || Late Cretaceous || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 44 || 104 || Jabel Sanam || Mishrif || Late Cretaceous || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 47 || 104 || Jabel Sanam || Nahr Umr || Early Cretaceous || Sandstone || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 49 || 104 || Jabel Sanam || Zubair || Early Cretaceous || Sandstone || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 43 || 113 || Jerishan || Khasib || Late Cretaceous || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 44 || 113 || Jerishan || Mishrif || Late Cretaceous || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 46 || 113 || Jerishan || Mauddud || Early Cretaceous || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 47 || 113 || Jerishan || Nahr Umr || Early Cretaceous || Sandstone || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 48 || 113 || Jerishan || Shuaibia || Early Cretaceous || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 50 || 113 || Jerishan || Ratawi/Yamama || Early Cretaceous || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 52 || 113 || Jerishan || Sulaiy || Early Cretaceous || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 45 || 114 || Khidr Al Maa || Mishrif || Late Cretaceous || Carbonate || Khasib || Argillaceous limestone ||
|-
| 47 || 114 || Khidr Al Maa || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 49 || 114 || Khidr Al Maa || Zubair || Early Cretaceous || Sandstone || Upper Shale Member || Shale ||
|-
| 51 || 114 || Khidr Al Maa || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 58 || 114 || Khidr Al Maa || Najmah || Late-Middle Jurassic || Carbonate || Gotnia || Evaporite ||
|-
| 90 || 49 || Khleisia || Khabour || Ordovician || Sandstone || Akkas || Shale ||
|-
| 63 || 39 || Makhul || Mus || Early Jurassic || Carbonate || Alan || Evaporite ||
|-
| 55 || 48 || Mileh Tharthar || Gotnia || Late Jurassic || Carboante || Gotnia || Evaporite ||
|-
| 44 || 86 || Muhainya || Mishrif || Early Cretaceous || Carbonate || || ||
|-
| 41 || 74 || Musaiyib || Hartha || Late Cretaceous || Carbonate || Upper Hartha || Argillaceous limestone ||
|-
| 50 || 74 || Musaiyib || Ratawi || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 46 || 3 || Mushorah || Mushorah/Mauddud || Late-Early Cretaceous || Carbonate || Shiranish || Dense limestone ||
|-
| 47 || 66 || Nafatah || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 70 || 19 || Qalian || Kurra Chine || Late Triassic || Carboante || Baluti || Shale ||
|-
| 20 || 28 || Quwair || Kirkuk Group || Oligocene || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 30 || 28 || Quwair || Pila Spi || Late-Middle Eocene || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 40 || 10 || Raffan || Shiranish || Late Cretaceous || Carbonate || Aaliji || Shale ||
|-
| 60 || 10 || Raffan || Sargelu || Middle Jurassic || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 66 || 10 || Raffan || Adaiyah || Early Jurassic || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 12 || 37 || Sadid || Jeribe || Miocene || Carboante || Fatha || Evaporite ||
|-
| 44 || 37 || Sadid || Jawan || Late Cretaceous || Carbonate || Jawan || Marl ||
|-
| 51 || 96 || Safawi || Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 41 || 47 || Samarra || Hartha || Late Cretaceous || Carbonate || Upper Hartha || Argillaceous limestone ||
|-
| 45 || 47 || Samarra || Maotsi || Late Cretaceous || Carbonate || Tanuma || Shale ||
|-
| 49 || 47 || Samarra || Garagu || Early Cretaceous || Carbonate || Garagu || Shale ||
|-
| 52 || 47 || Samarra || Chia Gara || Early Cretaceous-Late Jurassic || Carbonate || Sarmord || Shale ||
|-
| 49 || 92 || Samawa || Ratawi/Yamama || Early Cretaceous || Carbonate || Ratawi || Shale ||
|-
| 58 || 92 || Samawa || Najmah || Late-Middle Jurassic || Carbonate || Gotnia || Evaporite ||
|-
| 62 || 92 || Samawa || Alan/Mus || Early Jurassic || Carbonate || Alan || Evaporite ||
|-
| 40 || 95 || Shawiyah || Kifl/Rumaila || Late Cretaceous || Carbonate || Khasib || Shale ||
|-
| 47 || 95 || Shawiyah || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 9 || 100 || Sindibad || Ghar || Miocene || Sandstone || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 21 || 15 || Tel Hajar || Euphrates/Serikagni || Oligocene || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 47 || 97 || Ubaid || Nahr Umr || Early Cretaceous || Sandstone || Upper Nahr Umr || Shale ||
|-
| 44 || 102 || Umm Qasr || Mishrif || Late Cretaceous || Carbonate || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 47 || 102 || Umm Qasr || Nahr Umr || Early Cretaceous || Sandstone || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 49 || 102 || Umm Qasr || Zubair || Early Cretaceous || Sandstone || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|-
| 41 || 76 || West Kifl || Hartha || Late Cretaceous || Carbonate || Upper Hartha || Argillaceous Limestone ||
|-
| 58 || 76 || West Kifl || Najmah/Sargelu || Late-Middle Jurassic || Carbonate || Gotnia || Evaporite ||
|-
| 49 || 110 || West Luhais || Zubair || Early Cretaceous || Sandstone || || || Jassim and Goff<ref name=Jassimandgoff_2006 />
|}
Several conclusions can be drawn from these data:
Several conclusions can be drawn from these data:
* Iraq is an oil province, with a lot of oil generated in superb source rocks.
* Iraq is an oil province, with a lot of oil generated in superb [[source rock]]s.
* The Cretaceous and Cenozoic are the most important reservoir intervals, and there are fewer discoveries in Jurassic and older rocks.
* The Cretaceous and Cenozoic are the most important reservoir intervals, and there are fewer discoveries in Jurassic and older rocks.
* Some accumulations are very large, with large trap and reservoir volumes, commonly in stacked reservoir-seal pairs.
* Some accumulations are very large, with large trap and reservoir volumes, commonly in stacked reservoir-seal pairs.
* [[Libya hydrocarbon provinces]]
* [[Libya hydrocarbon provinces]]
* [[Tethys region]]
* [[Tethys region]]
* [[Petroleum basins of Turkey]]
* [[Jordan petroleum geology]]
* [[Jordan petroleum geology]]
* [[Iran petroleum systems]]
==References==
==References==
{{search}}
{{search}}
* [http://archives.datapages.com/data/alt-browse/aapg-special-volumes/m106.htm Original content in Datapages]
* [http://archives.datapages.com/data/alt-browse/aapg-special-volumes/m106.htm Original content in Datapages]
* [http://archives.datapages.com/data/specpubs/memoir106/data/i_aapg-sp1960379.htm PDF file in Datapages]
* [http://archives.datapages.com/data/specpubs/memoir106/data/379_aapg-sp1960379.htm PDF file in Datapages]