Changes

==Structure==

==Structure==

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CovenantFieldFig3.jpeg|{{figure number|1}}a) Inset map of the western United States showing the location of Utah. (b) Shaded relief map of Utah showing the location of the overthrust belt of northeastern Utah and southwestern Wyoming and the Covenant oil field, including tectonic elements. SR = San Rafael swell; KU = Kaibab uplift; MU = Monument uplift; WF = Waterpocket fold; A = Absaroka thrust fault. (c) Covenant field locality map of central Utah. From Parry, et. Al 2009

CovenantFieldFig3.jpeg|{{figure number|1}}a) Inset map of the western United States showing the location of Utah. (b) Shaded relief map of Utah showing the location of the overthrust belt of northeastern Utah and southwestern Wyoming and the Covenant oil field, including tectonic elements. SR = San Rafael swell; KU = Kaibab uplift; MU = Monument uplift; WF = Waterpocket fold; A = Absaroka thrust fault. (c) Covenant field locality map of central Utah. From Parry, et. al<ref name=Parry />

CovenantFieldFig1.png|{{figure number|2}}Generalized stratigraphic column of rock units the Covenant field area.  The Lower Jurassic Navajo Sandstone is the reservoir, while the overlying Middle Jurassic Twin Peaks Limestone and Arapien Shale form the cap rocks or seal for the field. From Parry, et.al 2009.

CovenantFieldFig1.png|{{figure number|2}}Generalized stratigraphic column of rock units the Covenant field area.  The Lower Jurassic Navajo Sandstone is the reservoir, while the overlying Middle Jurassic Twin Peaks Limestone and Arapien Shale form the cap rocks or seal for the field. From Parry, et. al.<ref name=Parry />

CovenantFieldFig2.png|thumb|400px|{{figure number|3}}A NW-SE trending cross section showing the Covenant oil field structure, Paxton and Gunnison-Salina thrust, and normal faults bounding Sevier Valley.  Note that OWC = oil-water contact for the covenant field.  See Figure 2 for the key to the geologic symbols. From Parry, et. Al  2009

CovenantFieldFig2.png|thumb|400px|{{figure number|3}}A NW-SE trending cross section showing the Covenant oil field structure, Paxton and Gunnison-Salina thrust, and normal faults bounding Sevier Valley.  Note that OWC = oil-water contact for the covenant field.  See Figure 2 for the key to the geologic symbols. From Parry, et. al.<ref name=Parry />

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The Covenant field is located in the central Utah thrust belt. Chidsey, et al.<ref name=Chidsey>Chidsey, T. C., Jr., J. S. DeHamer, E. E. Hartwick, K. R. Johnson, D. D. Schelling, D. A. Sprinkel, D. K. Strickland, J. P. Vrona, & D. A. Wavrek, 2007, Central Utah: Diverse Geology of a Dynamic Landscape, Petroleum Geology of Covenant Oil Field, Central Utah Thrust Belt, pp. 273-296</ref> describe the Covenant field trap as an “elongate, symmetric, northeast-trending, fault-propagation/fault-bend anticline with nearly 800 feet (270m) of structural closure with a 450-foot (150M) oil column. The oil-charged Navajo reservoir covers about 960 acres.”  The structure is related to movement along the Gunnison-Salina thrust and Paxton thrust fault and part of the larger Utah thrust belt province, this is outlined in greater detail by Chidsey et al.<ref name=Chidsey />   

The Covenant field is located in the central Utah thrust belt. Chidsey, et al.<ref name=Chidsey>Chidsey, T. C., Jr., J. S. DeHamer, E. E. Hartwick, K. R. Johnson, D. D. Schelling, D. A. Sprinkel, D. K. Strickland, J. P. Vrona, & D. A. Wavrek, 2007, Central Utah: Diverse Geology of a Dynamic Landscape, Petroleum Geology of Covenant Oil Field, Central Utah Thrust Belt, pp. 273-296</ref> describe the Covenant field trap as an “elongate, symmetric, northeast-trending, fault-propagation/fault-bend anticline with nearly 800 feet (270m) of structural closure with a 450-foot (150M) oil column. The oil-charged Navajo reservoir covers about 960 acres.”  The structure is related to movement along the Gunnison-Salina thrust and Paxton thrust fault and part of the larger Utah thrust belt province, this is outlined in greater detail by Chidsey et al.<ref name=Chidsey />   

==Reservoir==

==Reservoir==

The primary (as of 2007) reservoir in the Covenant Field is the Navajo Sandstone Early Jurassic (Toarcian) eolian sandstone. Parry, Chan, and Nash<ref>Parry, W. T., M. A. Chan, & B. P. Nash, 2009, [http://archives.datapages.com/data/bulletns/2009/08aug/BLTN08170/BLTN08170.HTM Diagenetic characteristics of the Jurassic Navajo Sandstone in the Covenant oil field, central Utah thrust belt]: AAPG Bulletin, vol. 93, no. 8, p. 1039-1061.</ref> outlined diagenetic charchteristics of the Navajo Sandstone from cores in the Covenant field. As of April 2015 the field had 24 active wells, and had produced a cumulative 21,443,660 barrels of oil.<ref>[https://oilgas.ogm.utah.gov/pub/Publications/Reports/Prod/Field/?C=M;O=D Field Production Reports, Utah]</ref>

The primary (as of 2007) reservoir in the Covenant Field is the Navajo Sandstone Early Jurassic (Toarcian) eolian sandstone. Parry, Chan, and Nash<ref name=Parry>Parry, W. T., M. A. Chan, & B. P. Nash, 2009, [http://archives.datapages.com/data/bulletns/2009/08aug/BLTN08170/BLTN08170.HTM Diagenetic characteristics of the Jurassic Navajo Sandstone in the Covenant oil field, central Utah thrust belt]: AAPG Bulletin, vol. 93, no. 8, p. 1039-1061.</ref> outlined diagenetic charchteristics of the Navajo Sandstone from cores in the Covenant field. As of April 2015 the field had 24 active wells, and had produced a cumulative 21,443,660 barrels of oil.<ref>[https://oilgas.ogm.utah.gov/pub/Publications/Reports/Prod/Field/?C=M;O=D Field Production Reports, Utah]</ref>

==Significance==

==Significance==