摘要
大柳泉构造带是廊固凹陷的中央隆起带,由于其构造运动强烈,断裂活动多样,油气成藏十分复杂。基于二次采集的高分辨率三维地震资料,综合运用钻井、地震及分析化验等成果,系统开展了油气成藏特征及主控因素分析。研究表明,该区沙三中、下亚段暗色泥岩是主力烃源岩,固安—旧州鼻状构造和柳泉—曹家务塌陷背斜为有利聚油构造区,一、二级断层控源,三、四级断层控藏是该区油气成藏的主控因素。论述了侧生旁储—远源供烃—构造控藏、下生上储—混源供烃—断层控藏和自生自储—近源供烃—地层不整合控藏等3种成藏模式的形成机制、油气聚集特征和分布规律,指出了勘探方向。
Daliuquan structural belt is the central uplift of Langgu Sag. Due to strong tectonic movement and various fracturing activities,reservoir-forming was very complicated. Based on high- resolution 3D seismic data re- acquired,drilling,seismic and test results were applied. Analysis on oil / gas reservoir forming and main control factors was systematically conducted. Studies have shown that the dark mudstone at the middle and lower parts of Sha- 3 Member was the main hydrocarbon source rock,Gu'an- Jiuzhou nose structure and Liuquan- Caojiawu Breakdown Anticline were favorable for oil accumulation structure,first- order and second- order faults controlled sources,and third- order and fourth- order faults were the main control factors for oil / gas reservoir- forming in the area. Three types of reservoir- forming mechanism,accumulation features and distribution rules of side generation and accumulation- hydrocarbon provision from distant sources- structure- controlled reservoir,lower generation and upper reservoir- hydrocarbon provision by commingled sources- fault- controlled reservoir,and self generation and self accumulation- hydrocarbon provision from near source- unconformity- controlled structure were discussed to instruct the exploration.
出处
《特种油气藏》
CAS
CSCD
北大核心
2015年第4期56-60,153,共5页
Special Oil & Gas Reservoirs
基金
中国石油天然气集团公司重大科技专项"华北油田上产稳产800万吨关键技术研究与应用"(2014E-35)
关键词
大柳泉构造带
构造特征
断层控藏
圈闭
成藏模式
Daliuquan structural belt
structural features
fault-controlled reservoir
trap
accumulation mode
