济阳坳陷三合村油田沙三下亚段油气成藏机理  

Hydrocarbon Accumulation Mechanism of Lower Es3 in Sanhecun Oilfield, Jiyang Depression

作　　者：张波[1,2] 

机构地区：[1]中国石油大学地球科学与技术学院,山东青岛266580 [2]中国石化胜利油田分公司勘探开发研究院,山东东营257015

出　　处：《新疆石油地质》2017年第1期22-26,共5页Xinjiang Petroleum Geology

基　　金：国家科技重大专项(2016ZX05006-003);中国石化科技攻关项目(P15082;P14017;P16005)

摘　　要：为明确渤海湾盆地济阳坳陷三合村油田沙三下亚段油气成藏机理,利用钻井和生物标志化合物资料,通过油气来源和油气输导体系研究,结合成藏期次分析,明确了三合村油田沙三下亚段油藏运聚特征。结果表明,三合村油田沙三下亚段油气来源于渤南洼陷沙四上亚段成熟烃源岩;研究区断层和不整合非常发育,沙三下亚段发育厚层骨架砂体,断层、不整合面和骨架砂体均具有较好的油气输导能力;三合村油田沙三下亚段油藏成藏期为东营组沉积期,在成藏期内,油气通过断层、不整合面、高渗透性砂砾岩扇体形成的立体输导体系运移至砂砾岩扇体中,由上覆厚层泥岩地层遮挡而形成构造-地层复合油藏。In order to identify hydrocarbon accumulation mechanism of the lower Es3 in Sanhecun oilfield of Jiyang depression, Bohai Baybasin, by using drilling and biomarker data and based on the research on petroleum sources and migration pathways, and combined withanalysis of hydrocarbon accumulation period, the characteristics of hydrocarbon migration and accumulation of the reservoir are under-stood. The results show that the oil and gas of the lower Es3 in Sanhecun oilfield originated from the matured source rocks of the upper Es4 in Bonan sag. Faults and unconformities are very developed in the study area. Thick framework sand bodies occur in the lower Es3 wherefaults, unconformity surfaces and framework sand bodies have relatively good hydrocarbon transport abilities; the hydrocarbon accumula-tion period of the lower Es3 is the depositional period of Ed, during which the hydrocarbon migrated to the sandy conglomerate fans over-lain by thick mudstones in Sanhecun sag through a 3-D transport system composed of faults, unconformities and high-permeable sandy con-glomerate fans. As a result, the structural-stratigraphic reservoir was formed.

关 键 词：渤海湾盆地 济阳坳陷 三合村油田 油气来源 输导体系 成藏期次 油气成藏机理 

分 类 号：TE122.1[石油与天然气工程—油气勘探]