辽河坳陷黄金带油田构造变形特征及控藏作用

发布时间：2018-05-19 11:20

本文选题：复杂应力条件 + 黄金带油田　；参考：《中国矿业大学学报》2016年03期

【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.
[Abstract]:Under the influence of the complex boundary conditions and the variation of regional tectonic action mode and direction, the characteristics of complex tectonic deformation and formed structures and their hydrocarbon accumulation are analyzed. Taking the gold belt oil field as an example, this paper makes use of the newly processed high quality 3D seismic data to describe the structural characteristics of the area, analyze the evolution of the stress field, and discuss the controlling effect of the structure on the oil and gas reservoir forming conditions. It is considered that there is an extensional tectonics in the third stage of Sha in this area, and that the Dongying period is a strike-slip structural deformation system, and the maximum principal compressive stress direction is near east-west direction, which is manifested by the north-east right-lateral strike-slip. At the same time, the direction of the local stress field is changed by the fault of the second boundary as the boundary of the tectonic belt. The results show that the extensional structure, strike-slip structure, compressional structure and reverse structure are all developed in this area under complex stress conditions, and there are special structural phenomena: the strike of fault and fold hinge appears regular gradual change. Dolphin effect exists in the horizontal section of strike-slip fault. Combined with the variation of the regional stress field and the influence of the boundary of the tectonic belt, the structural deformation superposition and the complicated pre-existing structural conditions are the causes of the complex structural phenomena. Tectonic activity coincides with hydrocarbon accumulation in time, which plays an important role in hydrocarbon accumulation and preservation.
【作者单位】：东北石油大学地球科学学院;青海油田天然气开发公司;中国石油辽河油田公司勘探开发研究院;
【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)
【分类号】：P618.13

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