Reservoir formation conditions and mechanism of Chang 4+5 oil reservoir set in Linzhen area,Ordos Basin

  • LEI Yang ,
  • WU Wenjing ,
  • LIANG Zhenghong ,
  • CHEN Bing ,
  • LIU Yuanzh
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  • 1.Key Laboratory of Petroleum Resources Research,Institute of Geology and Geophysics,Chinese Academy of Sciences Lanzhou 730000,China;2.University of Chinese Academy of Sciences,Beijing 100049,China

Online published: 2013-10-08

Abstract

Based on the research of hydrocarbon generation,reservoir conditions,migration,traps and accumulation,this paper systematically analyzed the forming conditions and mechanisms of Chang 4+5 oil reservoir set in Linzhen area.The result shows that the hydrocarbon of Chang 4+5 oil reservoir set is mainly generated from the Chang 7 source rocks,and the reservoir rocks are mostly delta front subfacies sandstone,which is considered to be low porosity and low perm eability reservoir.The dark mud rock,finer sihstone and sihpelite can effectively provide top cap rock for the reservoir.The anomalous pressure form ed by Chang 7 mudstone provides the force for migration.The hydrocarbon form ed by Chang 7 source rocks migrated into Chang 4+5 reservoir through the vertical folding sand bodies and micro—fractures under the high overpressure,vertically migrated into the traps along the delta front sand bodies and form ing reservoir,and form ed nose·shaped structural reservoir,lithologic reservoir and structural—lithologic reservoir,which are influenced by source rocks,sedimentary facies belt,micro-fractures,nose—shaped structure and overpressure.

Cite this article

LEI Yang , WU Wenjing , LIANG Zhenghong , CHEN Bing , LIU Yuanzh . Reservoir formation conditions and mechanism of Chang 4+5 oil reservoir set in Linzhen area,Ordos Basin[J]. Lithologic Reservoirs, 2013 , 25(4) : 11 -16 . DOI: 10.3969/j.issn.1673-8926.2013.04.003

References

[1] 窦伟坦,侯明才,陈洪德,等.鄂尔多斯盆地三叠系延长组油气成藏条件及主控因素研究[J]. 成都理工大学学报:自然科学版,2008,35(6):686-692.
[2] 邓虎成,周文.镇泾地区三叠系延长组油气成藏条件研究[J].石油天然气学报,2008,30(5):11-17.
[3] 邓秀芹,姚泾利,胡喜锋,等.鄂尔多斯盆地延长组超低渗透岩性油藏成藏流体动力系统特征及其意义[J].西北大学学报,2011,41(6):1044-1050.
[4] 刁帆,刘志刚.鄂尔多斯盆地胡尖山油田延长组长4+5 2储层特征及综合评价[J].岩性油气藏,2011,23(2):53-58.
[5] 高岗,韩永林,范泓澈,等.鄂尔多斯盆地胡尖山地区上三叠统延长组长4+5、长6 段储层特征及其与石油运聚关系[J].天然气地球科学,2011,22(4):576-581.
[6] 张慧元,李文厚,张慧军,等.鄂尔多斯盆地华池地区三叠系延长组长4+5 油层组沉积相研究[J].特种油气藏,2010,17(2):27-30.
[7] 钟兴平,苗建宇,徐子炎.鄂尔多斯盆地旦八地区长4+5 油层组沉积相特征研究[J].科技情报开发与经济,2010,20(8):131-133.
[8] 张润合,郑兴平,徐献高,等.鄂尔多斯盆地上三叠统延长组四、五段泥岩生烃潜力评价[J].西安石油学院学报,2003,18(2):9-13.
[9] 杨华,张文正.论鄂尔多斯盆地长7 段优质油源岩在低渗透油气成藏富集中的主导作用:地质地球化学特征[J].地球化学,2005,34(2):147-154.
[10] 侯林慧,彭平安,于赤灵,等.鄂尔多斯盆地姬塬—西峰地区原油地球化学特征及油源分析[J].地球化学,2007,36(5):497-506.
[11] 金祥纯.陕北油区丰富川油田长2 油层油气成藏规律研究[J].特种油气藏,2007,14(1):45-48.
[12] 段毅,吴保祥,张辉,等.鄂尔多斯盆地西峰油田原油地球化学特征及其成因[J].地质学报,2006,80(2):301-310.
[13] 张文正,杨华,李剑锋,等.论鄂尔多斯盆地长7 段优质油源岩在低渗透油气成藏富集中的主导作用———强生排烃特征及机理分析[J].石油勘探与开发,2006,33(3):289-293.
[14] Ourission G,Albrecht P,Rohmer M. Predictive microbial biochemistry,from molecular fossils to prokaryotic membranes[J]. Trends in biochemical Sciences,1982,7:236-239.
[15] Fu J M,Sheng G Y,Xu J Y,et al. Application of biological markers in the assessment of paleoenvironments of Chinese non-marine sediments[J]. Organic Geochemistry,1990,16:769-779.
[16] Moldowan J M,Seifert W K,Gallegos E J. Relationship between petroleum composition and depositional environment of petroleum source rocks [J]. AAPG Bulletin,1985,69:1255-1268.
[17] Fu J M,Sheng G Y,Peng P A,et al. Peculiarities of salt lake sediments as potential source rocks in China[J]. Organic Geochemistry,1986,10(1/3):119-126.
[18] 席胜利,李文厚,李荣西.烃源岩生烃期次与油气成藏———以鄂尔多斯盆地西缘马家滩地区长7 烃源岩为例[J].石油勘探与开发,2008,35(6):657-663.
[19] 罗晓容.油气运聚动力学研究进展及存在问题[J].天然气地球科学,2003,14(5):337-346.
[20] 刘小琦,邓宏文,李青斌,等.鄂尔多斯盆地延长组剩余压力分布及油气运聚条件[J].新疆石油地质,2007,28(2):143-145.
[21] 姚泾利,王克,宋江海,等.鄂尔多斯盆地姬塬地区延长组石油运聚规律研究[J].岩性油气藏,2007,19(3):32-37.
[22] 赵文智,胡树云,汪泽成,等.鄂尔多斯盆地基底断裂在上三叠统延长组石油聚集中的控制作用[J].石油勘探与开发,2003,30(5):1-5.
[23] 王昌勇,郑荣才,李忠权,等.鄂尔多斯盆地姬塬油田长8 油层组岩性油藏特征[J].地质科技情报,2010,29(3):69-74.
[24] 周瑞,胡学智.鄂尔多斯盆地西北部盐定地区油藏类型及其控制因素[J].石油实验地质,2001,23(4):390-394.
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