沉积盆地深部地层超压指标转化及评价方法——以湘黔鄂渝交界区为例

冯常茂; 吴冲龙

doi:10.11781/sysydz200804414

沉积盆地深部地层超压指标转化及评价方法——以湘黔鄂渝交界区为例

doi: 10.11781/sysydz200804414

冯常茂^1,2,
吴冲龙¹

1.
中国地质大学, 武汉, 430074
2. 广州海洋地质调查局, 广州, 510760

基金项目: 湖北省自然科学基金项目(2007ABA338);国家“十一五”科技攻关项目(2004BA616A—06—01)

详细信息

作者简介:
冯常茂(1979- ),男,博士,主要从事石油地质研究.E-mail:fengchangm@163.com.

中图分类号: TE121.3
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- 文章访问数: 836
- HTML全文浏览量: 47
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- 被引次数: 0
出版历程
- 收稿日期: 2007-04-12
- 修回日期: 2008-06-02
- 刊出日期: 2008-07-28

INDEX TRANSLATION AND EVALUATION METHOD OF OVERPRESSURE IN DEEP FORMATION OF SEDIMENTARY BASIN——A CASE STUDY AT THE BOUNDARY AMONG HUNAN, GUIZHOU, HUBEI AND CHONGQING

Feng Changmao^1,2,
Wu Chonglong¹

1.
China University of Geosciences, Wuhan, Hubei 430074, China
2. Guangzhou Marine Geological Survey, Guangzhou, Guangdong 510760, China

摘要

摘要: 沉积盆地超压的成因类型主要有3种:地层不均衡压实、构造挤压和流体作用;其形成机理有欠压实、蒙脱石脱水、烃类生成、流体热增压、液态烃类的热裂解作用等。但深部地层超压的产生主要与水热效应增压、上覆地层压力和烃类生成及裂解作用有关,因而地层超压系数可以用水热效应增压系数、静岩增压系数和烃类增压系数三者之和来表示。确定是否存在超压时,除考虑地层超压系数外,还应用断裂进行一票否决制。利用该指标转化方法,对湘黔鄂渝交界区下寒武统牛蹄塘组的超压进行研究,结果表明,该区牛蹄塘组形成超压的最可能区域为宜宾一带。
- 超压 /
- 形成机制 /
- 下组合 /
- 沉积盆地 /
- 中国南方
Abstract: Overpressure in sedimentary basins can be summarized into 3 types: disequilibrium compaction function,tectonic extrusion and liquid function.The forming mechanism includes undercompaction,montmorillonite dehydration,hydrocarbon generation,hydrothermal pressurization and hydrocarbon cracking,etc.But in deep formations,overpressure is mainly related to hydrothermal pressurization,superjacent strata pressure,hydrocarbon generation and cracking.So,overpressure coefficient in deep formation can be transformed by adding hydrothermal pressurization coefficient,superjacent strata coefficient and hydrocarbon pressurization coefficient.To estimate overpressure developed area,faults should be taken into consideration.Overpressure of the Lower Cambrian Niutitang Formation at the boundary among Hunan,Guizhou,Hubei and Chongqing has been studied.The most favorable region for overpressure locates around Yibin.
- overpressure /
- forming mechanism /
- lower assemblage /
- sedimentary basin /
- South China

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参考文献(22)

[1]	禇庆忠,李耀华.异常压力形成机制研究综述[J].天然气勘探与开发,2001,24(4):38～46
[2]	杜栩,郑红印,焦秀琼.异常压力与油气分布[J].地学前缘,1995,2(2):137～147
[3]	卓勤功.异常高压对烃源岩成烃机理和油气运聚成藏的影响[J].石油实验地质,2005,27(2):169～172
[4]	Barker C.Aquathermal pressuring; role of temperature in development of abnormal-pressure zones[J].AAPG Bulletin,1972,56(10):2068～2071
[5]	Barker C.Development of abnormal and subnormal pressures in reservoirs containing bacterially generated gas[J].AAPG Bulletin,1987,71(11):1404～1413
[6]	Barker C.Calculated volume and pressure changes during the thermal cracking of oil and gas in reservoirs[J].AAPG Bulletin,1990,74(8):1254～1261
[7]	Bradley J S.Abnormal formation pressure[J].AAPG Bulletin,1975,59(6):957～973
[8]	Bruce C H.Smectite dehydration; its relation to structural development and hydrocarbon accumulation in northern Gulf of Mexico basin[J].AAPG Bulletin,1984,68(6):673～683
[9]	Price L C,Wenger L M.The influence of pressure on petro-leum generation and maturation as suggested by aqueous pyro-lysis[J].Org Geochem,1992,19:141～159
[10]	Al-Shaieb Z,Puckette J O,Abdalla A A,et al.Megacom-partment complex in the Anadarko Basin:a completely sealed overpressured phenomenon[A].In:Ortoleva P J,ed.Basin compartments and seals,AAPG memoir 61[G].Tulsa:AAPG,1994.55～68
[11]	Surdam R C,Zun S J,Martinsen R S.The regional pressure region in Cretaceous sandstones and shales in the Power River Basin[A].In:Ortoleva P J,ed.Basin compartments and seals,AAPG Memoir 61[G].Tulsa:AAPG,1994.213～233
[12]	Grauls D.Overpressures:causal mechanisms,convetional and hydromechanical approaches[J].Oil and Gas Science and Technology-Rev IFP,1999,54(6):667～678
[13]	Grauls D J,Cassignol C.Identification of a zone of fluid pressure-induced fractures from log and seismic data-A case history[J].First Break,1993,11:59～68
[14]	王连进,叶加仁.沉积盆地超压形成机制述评[J].石油与天然气地质,2001,22(1):17～20
[15]	王兆云,赵文智,何海清.超压与烃类生成相互作用关系及对油气运聚成藏的影响[J].石油勘探与开发,2002,29(4):12～15
[16]	李明成.石油与天然气运移[M].北京:石油工业出版社,1994
[17]	曹华,龚晶晶,汪贵锋.超压的成因及其与油气成藏的关系[J].天然气地球科学,2006,17(3):422～425
[18]	贾致芳.石油地质学[M].北京:石油工业出版社,1989
[19]	肖开华,沃玉进,周雁等.中国南方海相层系油气成藏特点与勘探方向[J].石油与天然气地质,2006,27(3):316～325
[20]	腾格尔,高长林,胡凯等.上扬子东南缘下组合优质烃源岩发育及生烃潜力[J].石油实验地质,2006,28(4):359～365
[21]	Barker J F,Polloact S J.The geochemistry and origin of natural gases in southern Ontario[J].Bulletin of Canadian Petro-leum Geology,1984,32(3):313～326
[22]	李仲东.川东地区碳酸盐岩超压与天然气富集关系研究[J].矿物岩石,2001,21(4):53～58