断裂密集带样式及其对油气成藏的控制作用——以松辽盆地扶新隆起带杨大城子油层为例  

Types of fault-intensive belts and their control on hydrocarbon accumulation:a case study of Yangdachengzi oil layer in Fuxin Uplift, Songliao Basin

作　　者：梅啸寒 吴欣松[2] 赵家宏[3] 张琴[2] 刘景彦[1] 王茜 EI Xiaohan;WU Xinsong;ZHAO Jiahong;ZHANG Qin;LIU Jingyan;WANG Qian(School of Energy Resources,China University of Geosciences,Beijing 100083,China;College of Geosciences,China University of Petroleum,Beijing 102249,China;Exploration and Development Research Institute,Jilin Oilfield Company,PetroChina,Songyuan 138000,China;Zhengzhou Branch of SINOPEC Star New Energy Research Institute Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]中国石油大学(北京)地球科学学院,北京102249 [3]中国石油吉林油田分公司勘探开发研究院,吉林松原138000 [4]中石化新星(北京)新能源研究有限公司郑州分公司,河南郑州450000

出　　处：《断块油气田》2020年第1期1-6,共6页Fault-Block Oil & Gas Field

摘　　要：杨大城子油层现已成为松辽盆地南部油气勘探的重点层位之一。杨大城子油层油藏围绕T2断裂密集带分布,关于断裂密集带如何控制油气运移,什么样式的断裂密集带有利于油气聚集,断裂密集带什么部位有利于油气富集等问题还没有形成统一的认识。通过地震和构造资料总结断裂密集带平、剖面特征,扶新隆起带杨大城子油层主要发育4种断裂密集带,即反向断阶带、反向断阶￣地堑￣反向断阶带、反式断阶￣地堑￣顺向断阶带、反式断阶￣地堑￣地垒带。当断裂密集带与砂体方向大角度相交时,易形成岩性￣断层圈闭,断裂密集带两侧的地垒和反向断阶是油气聚集的有利场所;当断裂密集带与砂体方向近平行时,断裂带主要起油气疏导作用。Yangdachengzi oil layer has become one of the key exploration horizons in southern Songliao Basin in recent years.However,the reservoirs of Yangdachengzi oil layer distribute around T2 fault-intensive zone.There is no unified understanding on how the fault-intensive zone controls the oil and gas migration,what type of fault-intensive zone is beneficial to oil and gas accumulation,and what part of fault-intensive zone is conducive to hydrocarbon accumulation.Based on seismic and structural data,the horizontal and profile characteristics of the fault-intensive zone are summarized.Four types of fault-intensive zones are mainly developed in the Yangdachengzi oil layer,Fuxin Uplift:antithetic fault terrace belt,antithetic fault terrace-graben-antithetic fault terrace belt,antithetic fault terrace-graben-consequent fault terrace belt,and antithetic fault terrace-graben-horst belt.When fault-intensive zone intersects with sand body direction at a large angle,lithology-fault trap is easily formed;the horsts and antithetic fault terraces on both sides of the fault-intensive zone are favorable places for hydrocarbon accumulation.When fault-intensive zone is nearly parallel to sand body direction,fault zone plays a major role in guiding oil and gas.

关 键 词：断裂密集带 油气成藏 杨大城子油层 扶新隆起带 松辽盆地 

分 类 号：TE122.31[石油与天然气工程—油气勘探]