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East Breaks critical moment (view source)
Revision as of 20:07, 30 January 2014
, 20:07, 30 January 2014Initial import
{{publication
| image = exploring-for-oil-and-gas-traps.png
| width = 120px
| series = Treatise in Petroleum Geology
| title = Exploring for Oil and Gas Traps
| part = Critical elements of the petroleum system
| chapter = Sedimentary basin analysis
| frompg = 4-1
| topg = 4-123
| author = John M. Armentrout
| link = http://archives.datapages.com/data/specpubs/beaumont/ch04/ch04.htm
| pdf =
| store = http://store.aapg.org/detail.aspx?id=545
| isbn = 0-89181-602-X
}}
Magoon and Dow.<ref name=ch04r61>Magoon, L., B., Dow, W., G., 1994, The [[Petroleum system]]: AAPG Memoir 60, p. 3–24.</ref> define the critical moment as the time that best depicts the generation-migration-accumulation of most hydrocarbons in a [[petroleum system]]. The East Breaks 160-161 field began to accumulate no earlier than 1.2 Ma when the trap began forming, and accumulation is inferred to continue to the present<ref name=ch04r29>Dow, W., G., Yukler, M., A., Senftle, J., T., Kennicutt, M., C., IIArmentrout, J., M., 1990, Miocene oil source beds in the East Breaks basin, Flex-Trend, offshore Texas: Proceedings, Gulf Coast Section SEPM 9th Annual Research conference, p. 139–150.</ref> The structural configuration has changed little since initial formation, so that the present-day map (Figure 4-42) and cross-sectional geometry (Figure 4-43) accurately depict the trapping aspects of the petroleum system.
==Possible critical moments==
According to the [[maturation]] model for a middle Miocene [[source rock]], peak oil generation would have begun 0.2 Ma<ref name=ch04r29 /> and the critical moment for the East Breaks 160-161 petroleum system would be 0.20 Ma (Figures 4-45 and 4-53). If a stratigraphically deeper lower Paleocene or upper Jurassic source rock is the origin of the East Breaks oils, an earlier onset of significant generation could have occurred with [[migration]], continuing to today and supplying the petroleum that has charged the field.
==Summary==
The critical moment will be different for the middle Miocene, lower Paleocene, and lower Tertiary source rock. The critical interval encompasses the composite of all critical moments. The critical interval for the East Breaks 160-161 petroleum system is 2.8 Ma to the present. It is that time period after deposition of the reservoir and seal during which subsequent growth fault movement formed the anticlinal trap and accumulation of migrating hydrocarbons occurred.
==See also==
* [[East breaks petroleum system processes]]
* [[Trap formation]]
* [[Geochemistry of two oils from east breaks]]
* [[Hydrocarbon generation model]]
* [[Hydrocarbon migration model]]
* [[Hydrocarbon accumulation model]]
==References==
{{reflist}}
==External links==
{{search}}
* [http://archives.datapages.com/data/specpubs/beaumont/ch04/ch04.htm Original content in Datapages]
* [http://store.aapg.org/detail.aspx?id=545 Find the book in the AAPG Store]
[[Category:Critical elements of the petroleum system]]
[[Category:Sedimentary basin analysis]]
| image = exploring-for-oil-and-gas-traps.png
| width = 120px
| series = Treatise in Petroleum Geology
| title = Exploring for Oil and Gas Traps
| part = Critical elements of the petroleum system
| chapter = Sedimentary basin analysis
| frompg = 4-1
| topg = 4-123
| author = John M. Armentrout
| link = http://archives.datapages.com/data/specpubs/beaumont/ch04/ch04.htm
| pdf =
| store = http://store.aapg.org/detail.aspx?id=545
| isbn = 0-89181-602-X
}}
Magoon and Dow.<ref name=ch04r61>Magoon, L., B., Dow, W., G., 1994, The [[Petroleum system]]: AAPG Memoir 60, p. 3–24.</ref> define the critical moment as the time that best depicts the generation-migration-accumulation of most hydrocarbons in a [[petroleum system]]. The East Breaks 160-161 field began to accumulate no earlier than 1.2 Ma when the trap began forming, and accumulation is inferred to continue to the present<ref name=ch04r29>Dow, W., G., Yukler, M., A., Senftle, J., T., Kennicutt, M., C., IIArmentrout, J., M., 1990, Miocene oil source beds in the East Breaks basin, Flex-Trend, offshore Texas: Proceedings, Gulf Coast Section SEPM 9th Annual Research conference, p. 139–150.</ref> The structural configuration has changed little since initial formation, so that the present-day map (Figure 4-42) and cross-sectional geometry (Figure 4-43) accurately depict the trapping aspects of the petroleum system.
==Possible critical moments==
According to the [[maturation]] model for a middle Miocene [[source rock]], peak oil generation would have begun 0.2 Ma<ref name=ch04r29 /> and the critical moment for the East Breaks 160-161 petroleum system would be 0.20 Ma (Figures 4-45 and 4-53). If a stratigraphically deeper lower Paleocene or upper Jurassic source rock is the origin of the East Breaks oils, an earlier onset of significant generation could have occurred with [[migration]], continuing to today and supplying the petroleum that has charged the field.
==Summary==
The critical moment will be different for the middle Miocene, lower Paleocene, and lower Tertiary source rock. The critical interval encompasses the composite of all critical moments. The critical interval for the East Breaks 160-161 petroleum system is 2.8 Ma to the present. It is that time period after deposition of the reservoir and seal during which subsequent growth fault movement formed the anticlinal trap and accumulation of migrating hydrocarbons occurred.
==See also==
* [[East breaks petroleum system processes]]
* [[Trap formation]]
* [[Geochemistry of two oils from east breaks]]
* [[Hydrocarbon generation model]]
* [[Hydrocarbon migration model]]
* [[Hydrocarbon accumulation model]]
==References==
{{reflist}}
==External links==
{{search}}
* [http://archives.datapages.com/data/specpubs/beaumont/ch04/ch04.htm Original content in Datapages]
* [http://store.aapg.org/detail.aspx?id=545 Find the book in the AAPG Store]
[[Category:Critical elements of the petroleum system]]
[[Category:Sedimentary basin analysis]]