渤海湾盆地济阳坳陷车镇凹陷西部深层油气倒灌的物理模拟实验
|
摘要
以油气倒灌理论为指导,综合利用地震、地化、钻井、测井等资料,研究了渤海湾盆地济阳坳陷车镇凹陷西部油气倒灌的成藏机理。通过实验模拟油气在二次运移过程中以断裂(或微裂缝)为倒灌通道的过程,再现油气倒灌的形成过程。研究表明,Es3(中-下)亚段烃源岩与Es4(上)亚段油砂具有较好的亲缘关系,且Es4(上)亚段发现的油藏埋深大于Es3烃源岩底界埋藏深度;Es3(下)地层压力系数在1.0～1.4之间,向上和向下压力系数均逐渐减小,是油气倒灌的动力;裂缝与断裂是切穿Es3烃源岩底界与Es4顶部之间泥岩隔层、连接烃源岩与储集层的运移通道。
According to the theory of hydrocarbon downward migration,based on seismology,geochemistry,well drilling and logging,it is discussed in this paper the accumulation mechanism of petroleum downward migration in the western Chezhen Sag,the Jiyang Depression,the Bohai Bay Basin.The main pathways of hydrocarbon downward migration include factures or micro cracks in the process of secondary migration,and the formation process of hydrocarbon downward migration is reproduced by experimental simulation.Source rocks in the middle and lower subsections of the 3rd member of the Shahejie Formation have good genetic relationships with oil sands from the upper subsection of the 4th member of the Shahejie Formation,and reservoirs discovered in the upper subsection of the 4th member of the Shahejie Formation are buried deeper than the bottom boundary of source rocks from the 3rd member of the Shahejie Formation.In the lower subsection of the 3rd member of the Shahejie Formation,pressure coefficients range from 1.0 to 1.4,and decrease both upwards and downwards,providing force for petroleum downward migration.Cracks and fractures break the mudstone interlayers between the bottom boundary of source rocks from the 3rd member of the Shahejie Formation and the top surface of the 4th member of the Shahejie Formation.As a result,source rocks and reservoirs are connected.
According to the theory of hydrocarbon downward migration,based on seismology,geochemistry,well drilling and logging,it is discussed in this paper the accumulation mechanism of petroleum downward migration in the western Chezhen Sag,the Jiyang Depression,the Bohai Bay Basin.The main pathways of hydrocarbon downward migration include factures or micro cracks in the process of secondary migration,and the formation process of hydrocarbon downward migration is reproduced by experimental simulation.Source rocks in the middle and lower subsections of the 3rd member of the Shahejie Formation have good genetic relationships with oil sands from the upper subsection of the 4th member of the Shahejie Formation,and reservoirs discovered in the upper subsection of the 4th member of the Shahejie Formation are buried deeper than the bottom boundary of source rocks from the 3rd member of the Shahejie Formation.In the lower subsection of the 3rd member of the Shahejie Formation,pressure coefficients range from 1.0 to 1.4,and decrease both upwards and downwards,providing force for petroleum downward migration.Cracks and fractures break the mudstone interlayers between the bottom boundary of source rocks from the 3rd member of the Shahejie Formation and the top surface of the 4th member of the Shahejie Formation.As a result,source rocks and reservoirs are connected.
引文
[1]Pan C H.Petroleum in basement rocks[J].AAPG Bulletin,1982,62(10):1597-1643.
[2]李传亮,张景廉,杜志敏.油气初次运移理论新探[J].地学前缘,2007,14(4):132-142.
[3]李传亮.油气倒灌不可能发生[J].岩性油气藏,2009,21(1):6-10.
[4]张景廉.油气“倒灌”论质疑[J].岩性油气藏,2009,21(3):122-128.
[5]郝芳,邹华耀,姜建群.油气成藏动力学及其研究进展[J].地学前缘,2000,7(3):11-21.
[6]迟元林,萧德铭,殷进垠.松辽盆地三肇地区上生下储“注入式”成藏机制[J].地质学报,2000,74(4):371-377.
[7]付广,王有功.三肇凹陷青山口组源岩生成油向下“倒灌”运移层位及其研究意义[J].沉积学报,2008,26(2):355-360.
[8]付晓飞,平贵东,范瑞东,等.三肇凹陷扶杨油层油气“倒灌”运聚成藏规律研究[J].沉积学报,2009,27(3):558-566.
[9]刘宗堡,付晓飞,吕延防,等.大型凹陷向斜区油气倒灌式成藏:以松辽盆地三肇凹陷扶杨油层为例[J].地质论评,2009,55(5):685-692.
[10]吕延防,李建民,付晓飞,等.松辽盆地三肇凹陷油气下排的地质条件及找油方向[J].地质科学,2009,44(2):525-533.
[11]史集建,付广,李丽丽.滨北地区青一段油气向下“倒灌”运移距离和层位的定量研究[J].油气地质与采收率,2009,16(1):26-29.
[12]王蛟,姜在兴,陈世悦,等.渤海湾盆地车镇凹陷沙三—沙一段沉积演化与有利砂体预测[J].石油实验地质,2005,27(4):371-377.
[13]张家震,徐备.车镇凹陷含油气系统划分及勘探方向[J].西南石油大学学报,2009,24(2):13-17.
[14]褚庆忠,张树林.含油气盆地成藏动力学研究综述[J].世界地质,2002,21(1):24-29.
[15]Bradley J S.Abnormal formation pressure[J].AAPG Bulletin,1975,59(6):957-973.
[16]Hunt J M.Generation and migration of petroleum from abnor-mally pressured fluid compartments[J].AAPG Bulletin,1990,74(1):1-12.
[17]Hindle A D.Petroleum migration pathways and charge concen-tration:a three-dimensional model[J].AAPG Bulletin,1997,81(8):1451-1481.
[18]张厚福,方朝亮.石油地质学[M].北京:石油工业出版社,1999:139-140.
[2]李传亮,张景廉,杜志敏.油气初次运移理论新探[J].地学前缘,2007,14(4):132-142.
[3]李传亮.油气倒灌不可能发生[J].岩性油气藏,2009,21(1):6-10.
[4]张景廉.油气“倒灌”论质疑[J].岩性油气藏,2009,21(3):122-128.
[5]郝芳,邹华耀,姜建群.油气成藏动力学及其研究进展[J].地学前缘,2000,7(3):11-21.
[6]迟元林,萧德铭,殷进垠.松辽盆地三肇地区上生下储“注入式”成藏机制[J].地质学报,2000,74(4):371-377.
[7]付广,王有功.三肇凹陷青山口组源岩生成油向下“倒灌”运移层位及其研究意义[J].沉积学报,2008,26(2):355-360.
[8]付晓飞,平贵东,范瑞东,等.三肇凹陷扶杨油层油气“倒灌”运聚成藏规律研究[J].沉积学报,2009,27(3):558-566.
[9]刘宗堡,付晓飞,吕延防,等.大型凹陷向斜区油气倒灌式成藏:以松辽盆地三肇凹陷扶杨油层为例[J].地质论评,2009,55(5):685-692.
[10]吕延防,李建民,付晓飞,等.松辽盆地三肇凹陷油气下排的地质条件及找油方向[J].地质科学,2009,44(2):525-533.
[11]史集建,付广,李丽丽.滨北地区青一段油气向下“倒灌”运移距离和层位的定量研究[J].油气地质与采收率,2009,16(1):26-29.
[12]王蛟,姜在兴,陈世悦,等.渤海湾盆地车镇凹陷沙三—沙一段沉积演化与有利砂体预测[J].石油实验地质,2005,27(4):371-377.
[13]张家震,徐备.车镇凹陷含油气系统划分及勘探方向[J].西南石油大学学报,2009,24(2):13-17.
[14]褚庆忠,张树林.含油气盆地成藏动力学研究综述[J].世界地质,2002,21(1):24-29.
[15]Bradley J S.Abnormal formation pressure[J].AAPG Bulletin,1975,59(6):957-973.
[16]Hunt J M.Generation and migration of petroleum from abnor-mally pressured fluid compartments[J].AAPG Bulletin,1990,74(1):1-12.
[17]Hindle A D.Petroleum migration pathways and charge concen-tration:a three-dimensional model[J].AAPG Bulletin,1997,81(8):1451-1481.
[18]张厚福,方朝亮.石油地质学[M].北京:石油工业出版社,1999:139-140.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心