松辽盆地扶新隆起带南部扶余油层油气运移机制与成藏模式研究  

Hydrocarbon Migration Mechanism and Accumulation Models of the Fuyu Oil Layer in Southern Fuxin Uplift,Songliao Basin

作　　者：孙雨[1] 陈晨[1] 马世忠[1] 丛琳[1] 赵慧[2] 于利民[2] 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]吉林油田有限责任公司勘探开发研究院,吉林松原138001

出　　处：《地质论评》2013年第3期501-509,共9页Geological Review

基　　金：中国石油天然气股份有限公司科学研究与技术开发项目(编号06-01C-01-01(B));国家自然科学基金资助项目(编号41202102)的成果

摘　　要：应用流体包裹体均一温度、埋藏史、古构造演化及构造运动时期等资料,确定扶新隆起带南部扶余油层成藏期主要为嫩江组沉积末期和明水组沉积末期。成藏期,源内区域油以垂向"倒灌"运移为主,青一段超压是油气向下"倒灌"运移的动力,油源断裂是油气向下"倒灌"运移的输导通道;源边、源外区域油以"复式"运移为主,源内区域生成的大量油首先沿油源断裂垂向运移至源内区域的储集层内,再通过一定的优势输导通道长距离侧向运移至源边或源外区域的有效圈闭内成藏。在此基础上,提出扶新隆起带扶余油层不同区域的3类成藏模式,即:源内"先直排倒灌,后短距离侧向分配",源边"斜坡带断层遮挡"及源外"复式聚集,长距离侧向运移"的成藏模式,为扶新隆起带南部扶余油层油气富集区优选提供了重要的地质依据。Using the data of homogenization temperatures of fluid inclusions, burial and thermal history, evolution of palaeostructure,hydrocarbon accumulation period of the Fuyu oil layer in the southern Fuxin Uplift, Songliao Basin, is defined in the end of Nenjiang Formation and the end of Mingshui Formation. On periods of hydrocarbon formation reservoirs, vertical hydrocarbon ＂reversed migration＂ is the major hydrocarbon migration way within oil source. The overpressure of K1qn1 mudstone is motivating force of oil migration downward. The source faults are mainly migration pathway of oil migration downward. Hydrocarbon ＂reversed migration＂ is the major hydrocarbon migration way in the outer margin and outside of oil source. First, volumes of oil resulting from inner oil source migrated vertically to reservoirs of inner oil source. Then them migrated long-distance laterally to effective traps in the outer margin and outside of oil source through advantage hydrocarbon migration way. On this basis, a model for hydrocarbon accumulations is presented, and it includes following directly drained and reversed migration with lateral migration at a short distance, fault screened trap in the slope, multiple hydrocarbon accumulation and lateral migration at a long distance. It provides an important basis for supporting the new oil rich region of the Fuyu oil layer in the southern Fuxin Uplift, Songliao Basin.

关 键 词：成藏模式 复式聚集 “倒灌”运移 扶余油层 松辽盆地 

分 类 号：P618.13[天文地球—矿床学]