塔中西部走滑断裂破碎带结构及与油气关系  

Structure of strike-slip fracture zone and its relationship with oil and gas in western Tazhong Ⅰ gas field

作　　者：伍轶鸣[1] 韩杰[1] 陈思[1] Wu Yiming;Han Jie;Chen Si(Research Institute of Exploration&Development,PetroChina Tarim Oilfield Company,Korla,Xinjiang841000)

机构地区：[1]中国石油塔里木油田分公司勘探开发研究院,新疆库尔勒841000

出　　处：《地质科学》2020年第1期57-67,共11页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：国家科技重大专项(编号:2016ZX05053)资助。

摘　　要：塔中I号气田西部是塔中油气上产的重要领域,利用最新处理的叠前深度偏移资料,在断裂控储控藏认识指导下,开展走滑断裂解剖,落实富油气区域。研究区断裂可划分为两期三级3组断裂,形成于加里东期的北东向走滑断裂及其伴生裂缝是本区的控储控藏断裂.沿走滑断裂走向一般为非线性结构,通常可分为应力转换区和应力释放区。应力转换区包括岩桥、拉分地堑、地垒、局部鼻状构造等;应力释放区包括羽状、斜列破碎带等。应力转换区和应力釋放区是油气最富集的区域,走滑断裂破碎带规模越大,储层越发育,油气越富集。The western part of TazhongⅠgas field is an important field for oil and gas production,using the newly processed pre-stack depth migration seismic data,under the guidance of the knowledge of fracture control storage and control reservoirs,the strike-slip fracture anatomy is carried out to carry out the oil-gas-rich areas.The fracture of the research area can be divided into two phases,three stages and three groups of fractures.The northeast-trending strike-slip faults formed in the Caledonian Period and its associated fractures are the faults of the controlled storage and control reservoirs in the area.The strike of strike-slip faults is generally nonlinear,usually can be divided into stress conversion area and stress release area.The stress conversion area includes rock bridge,graben,horst and local nasal tructures.The stress release area includes pinnate,oblique row fracture zone,etc.The larger the scale of the strike-slip fracture zone,the more developed the reservoir and the more abundant the oil and gas.

关 键 词：塔中I号气田 奥陶系 碳酸盐岩 走滑断裂 断裂破碎带 

分 类 号：TE122[石油与天然气工程—油气勘探]