海拉尔盆地呼和湖凹陷断裂形成演化及其对油气的控制作用  

Tectonic evolution and its controlling on hydrocarbon of Huhehu depression in Hailar Basin

作　　者：李军辉[1] 卢双舫[2] 蒙启安[1] 曹瑞成[3] 朱德丰[1] 刘赫[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]东北石油大学地球科学学院,黑龙江大庆163318 [3]大庆油田有限责任公司海拉尔勘探开发指挥部,黑龙江大庆163712

出　　处：《地质科学》2011年第4期929-941,共13页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：国家重点基础研究发展计划"973"项目(编号:2009CB219306);教育部新世纪优秀人才支持计划项目(编号:NCET-04-0345)资助

摘　　要：断裂的形成及演化对油气的生成、运移和聚集具有重要的控制作用。本文系统分析了呼和湖凹陷断裂形成演化特征对油气成藏条件的控制作用。研究表明,呼和湖凹陷经历了3期构造演化,由下而上分别为:早期伸展断陷期(T_5～T_(22))、中期裂后热沉降断—坳期(T_(22)～T_(04))和晚期坳陷期(T_(04)～地表)。纵向上主要发育了两套断裂系统,下部伸展断裂系统主要为北东东向、北东向和北北东向;上部走滑断裂系统主要为北北东向和北北西向。断裂的形成和演化控制了烃源岩的分布和热演化程度、油气运移、圈闭的形成与油气的聚集,进而控制了油气的分布。综合研究表明,围绕主力生油洼槽及周边分布的长期活动断裂带附近是油气运聚成藏的有利区域。The generation、migration and accumulation of hydrocarbon are importantly controlled by the formation and evolution process of fracture.The characteristics and evolution of tectonic and theirs impact to hydrocarbon accumulation of Huhehu depression have system analyzed in this paper.The results show that Huhehu depression has three tectonic movements.From down to up separately is early extensional faulted depression stage（T5～T22）,middle postfault thermal subsidence fault sag stage（T22～T04）,late depression stage（T04～surface）.Two sets of fault system are developed in longitudinal direction：lower extensional faulted system mainly is NEE,NE and NNE; upper strikeslip fault system mainly is NNE and NNW.Tectonic evolution controls distribution of source rock,hydrocarbon migration,trap forming,hydrocarbon accumulation,then distribution of petroleum.The results of comprehensive research show that around brunt oil generation and peripheral distributed longterm activity fault zone nearby are favorable zone of oilgas migration and accumulation.

关 键 词：呼和湖凹陷 断裂特征 断裂演化 烃源岩分布 油气运移 油气聚集 

分 类 号：P542[天文地球—构造地质学] TE121[天文地球—地质学]