Abnormal Overpressure and Hydrocarbon Pooling in Maxi Sag,Jizhong Depression
Received date: 2012-02-02
Revised date: 2012-03-09
Online published: 2012-08-10
In Maxi area,abnormal overpressure occurs widely in the lower Tertiary Shahejie Formation,including the second and third members of the Shahejie Formation,especially the upper of the third member of Shahejie Formation with pressure coefficient over 1.37.Laterally,the pressure coefficient decreases from central part of sag to the edge.The major cause of the overpressure is related to the hydrocarbon generation.Three functions of overpressure for hydrocarbon pooling in the sag follow as:improve reservoir property,enhance sealing capability,and provide the power for the deep hydrocarbon migration.Thus,the overpressure is important to hydrocarbon migration.We establish the pattern of overpressure-moderate pore-structural petroleum pool in the Rendong slope,the pattern of overpressure-moderate pore-lithological petroleum pool in the central part of Maxi sag,and the pattern of overpressure-moderate and high pore-structural and lithological composite petroleum pool in Nanmazhuang slope.
Key words： Maxi sag; Overpressure; Hydrocarbon accumulation; Accumulation pattern
HOU Feng-xiang，DONG Xiong-ying，WU Li-jun，LI Xiang-yang，HOU Feng-mei . Abnormal Overpressure and Hydrocarbon Pooling in Maxi Sag,Jizhong Depression[J]. Natural Gas Geoscience, 2012 , 23(4) : 707 -712 . DOI: 10.11764/j.issn.1672-1926.2012.04.707
［1］Gao Gang,Huang Zhilong,Wang Zhaofeng,et al.Study on the mechanisms of the formation of formation abnormal high-pressure［J］.Journal of Xi′an Petroleum Institute:Natural Science Edition,2005,20(1):1-7.［高岗,黄志龙,王兆峰,等.地层异常高压形成机理的研究［J］.西安石油大学学报：自然科学版,2005,20(1):1-7.］
［2］Wan Zhifeng,Xia Bin,He Jiaxiong,et al.Formation mechanism of overpressure and its influence on hydrocarbon accumulation in sedimentary basins［J］.Natural Gas Geoscience,2007,18(2):219-223.［万志峰,夏斌,何家雄,等.沉积盆地超压形成机制及其对油气运聚成藏过程的影响［J］.天然气地球科学,2007,18(2):219-223.］
［3］Su Yushan,Wang Shenglang,Zhang Lianmeng,et al.The effect of abnormal overpressure on deep reservoir forming in Dongpu depression［J］.Petroleum Exploration and Development,2002,29(2):49-57.［苏玉山,王生朗,张联盟,等.超压异常对东濮凹陷深层油气成藏的控制作用［J］.石油勘探与开发,2002,29(2):49-57.］
［4］Hu Haiyan.Overpressure cause and it affects the reserve formation［J］.Natural Gas Geoscience,2004,15(1):99-102.［胡海燕.超压的成因及其对油气成藏的影响［J］.天然气地球科学,2004,15(1):99-102.］
［5］Hao Fang,Dong Weiliang.Evolution of fluid flow and petroleum accumulation in overspressured systems in sedimentary basins［J］.Advance in EarthScience,2001,16(1):79-85.［郝芳,董伟良.沉积盆地超压系统演化、流体流动与成藏机理［J］.地球科学进展,2001,16(1):79-85.］
［6］Zha Ming,Qu Jiangxiu,Zhang Weihai.The relationship between overpressure and reservoir forming mechanism［J］.Petroleum Exploration and Development,2002,29(1):19-22.［查明,曲江秀,张卫海.异常高压与油气成藏机理［J］.石油勘探与开发,2002,29(1):19-22.］
［7］Li Zhi,Dou Lirong,Ai Xiaolan.Abnormal high pressure and generation of hydrocarbon［J］.Petroleum Exploration and Development,2003,30(5):28-30.［李志,窦立荣,艾小兰.异常高压与油气的生成［J］.石油勘探与开发,2003,30(5):28-30.］
［8］Wang Zhaoyun,Zhao Wenzhi,He Haiqing.Study on the interaction of overpressure and hydrocarbon generation and the influence of overpressure upon hydrocarbonaccumulations［J］.Petroleum Exploration and Development,2002,29(4):12-15.［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.］
［9］Chen Zhonghong,Zha Ming,Qu Jiangxiu.Conditions and mechanism of hydrocarbon accumulation in overpressure systems in sedimentary basins［J］.Natural GasGeoscience,2003,14(2):97-102.［陈中红,查明,曲江秀.沉积盆地超压体系油气成藏条件及机理［J］.天然气地球科学，2003,14(2):97-102.］
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号