辽河坳陷黄金带油田构造变形特征及控藏作用  

Structural deformation features and its control on hydrocarbon accumulation in Huangjindai oilfield,Liaohe Depression

作　　者：刘晓文[1] 施尚明[1] 何春波[1] 常迪[2] 吕鹏佶[3] 刘露[1] 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]青海油田天然气开发公司,青海格尔木816000 [3]中国石油辽河油田公司勘探开发研究院,辽宁盘锦124010

出　　处：《中国矿业大学学报》2016年第3期562-567,共6页Journal of China University of Mining & Technology

基　　金：高等学校博士学科点专项科研基金项目(20112322120002);黑龙江省自然科学基金项目(QC2013C041);东北石油大学研究生创新科研项目(YJSCX2015-001NEPU)

摘　　要：在区域构造作用方式和方向产生变化及复杂边界条件的综合影响下,分析复杂构造变形及所形成构造的特征及其油气成藏.本文以黄金带油田为例,利用新处理的高品质三维地震资料,对本区构造特征进行精细刻画,分析应力场演化,并探讨构造对油气成藏条件的控制作用.认为本区沙三期存在北西-南东向的伸展构造作用;东营期为走滑构造变形体制,最大主压应力方向为近东西向,表现为北东向右旋走滑、东西向挤压和南北向伸展的构造变形特征,同时,二界沟断层作为构造带边界对局部应力场的方向造成改变.研究结果表明:在复杂的应力条件下,伸展构造、走滑构造、挤压构造、反转构造在本区均有发育,并存在特殊的构造现象:断层与褶皱枢纽的走向出现规律性渐变、走滑断层平直段存在"海豚效应"现象.结合区域应力场的变化以及构造带边界的影响,构造变形叠加和复杂的先存构造条件是产生复杂构造现象的原因.构造活动与油气成藏在时间上相契合,对油气成藏与保存起到了至关重要的作用.Under a combined influence of changing regional tectonics and directions, as well as the complex boundary conditions, the structural deformation, its tectonic characteristics and hydrocarbon accumulation were studied in this paper. Tectonic characteristics of the Huangjin- dai oilfield were described in details with newly processed high quality 3D seismic data. Moreo- ver, the stress field formation mechanism and its control action on hydrocarbon accumulation were clarified. It can be concluded that the stress field extension was north-west and south-east trend in Shahejie period. While in Dongying period this area was dominated by a strike-slip stress field whose maximum principal compressive stress direction is nearly east-west. North- east right-lateral strike-slip, east-west extrusion and north south extension arose. Meanwhile, as a tectonic boundary, the Erjiegou fault changed the direction of local stress field. The result shows that extension, strike-slip, extrusion and inversion structures develop in this area as a result of complex stress conditions, together with some special structures, such as regularly changing of the strikes of faults and fold hinges, and remaining ＂dolphin effect＂ phenomenon of strike-slip faults straight segment. Considering the influence of change in regional stress field and tectonic belt boundary, complex structure phenomenon appears as results of the superposi- tion of tectonic deformation and complicated pre-existing tectonic conditions. Time-corresponded tectonic activity and hydrocarbon accumulation play crucial roles in hydrocarbon accumulating and preserving.

关 键 词：复杂应力条件 黄金带油田 构造带边界 海豚效应 油气成藏 

分 类 号：P548[天文地球—构造地质学]