石油实验地质2017，Vol.39Issue(5)：603-609,7.DOI:10.11781/sysydz201705603
渤海湾盆地济阳坳陷三合村洼陷油气成藏研究
Hydrocarbon accumulation in Sanhecun Sag,Jiyang Depression,Bohai Bay Basin
摘要
Abstract
The migrate d oil and gas from the Bonan Sag accumulating in the Sanhecun Sag of Bonan Depression of Bohai Bay Basin was studied using fluid inclusion and biomarker compound analyses, combined with the burial history modelling of typical wells and the evolution history of boundary faults. A new understanding was proposed from two aspects including oil and gas accumulation time and migration path evolution. Three hydrocarbon accu?mulation processes occurred in the Sanhecun Sag during the early Dongying, Guantao and late Minghuazhen periods according to fluid inclusion homogenization temperatures and biomarkers which reflect maturity.The early oil and gas mainly derived from the upper part of the fourth member of Shahejie Formation, and then from the third and first members of Shahejie Formation in the Bonan Sag, forming a complete hydrocarbon accumulation sequence in the Sanhecun area. During the accumulation period of Dongying Formation, boundary faults failed to stagger delta sand body. As a result, the Bonan oil and gas directly migrated along the contiguous sand and accu?mulated in Sanhecun area. Faults, sand bodies and unconformities provided a good migration channel for late oil and gas migration.It is confirmed that oil and gas migrated through"the early unified sand body" and"fault?sand body?unconformity composite" to Sanhecun Sag and the southern slope and then accumulated, forming a variety of oil and gas accumulation types.关键词
油气成藏/有效运移/三合村洼陷/济阳坳陷/渤海湾盆地Key words
hydrocarbon accumulation/effective migration/Sanhecun Sag/Jiyang Depression/Bohai Bay Basin分类
能源科技引用本文复制引用
孟涛,邱隆伟,王永诗,刘雅利,刘鹏,程付启..渤海湾盆地济阳坳陷三合村洼陷油气成藏研究[J].石油实验地质,2017,39(5):603-609,7.基金项目
国家科技重大专项"渤海湾盆地精细勘探关键技术"(2016ZX05006)和中国石油化工股份有限公司研究项目"济阳富油凹陷周缘小洼陷勘探潜力评价"(P15082)资助. （2016ZX05006）
