三维地震构造应力场模拟及裂缝储层预测  

SIMULATION OF 3D SEISMIC STRCTURAL STRESS FIELD AND THE PREDICTION OF THE FRUCTURED RESERVOIRS

作　　者：刘云武[1] 唐振国[2,3] 陈守田[4] 

机构地区：[1]北京大学地球与空间科学学院,北京100087 [2]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [3]成都理工大学,四川成都610000 [4]大庆油田有限责任公司钻探集团物探一公司,黑龙江大庆163357

出　　处：《大庆石油地质与开发》2011年第2期31-35,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家“973”重大科学基础研究项目（009CB219300）资助.

摘　　要：随着油气勘探技术的提高，国内物性较好的沉积岩储层油气资源逐步被发现和开发，而沉积盆地中火成岩和基岩变质岩等一般被认为致密的储层在华北、辽河、大庆等油田相继发现，成为油气勘探的新领域。以海拉尔盆地乌东地区为例，基于三维地震资料，在建立层序格架和精细断层解释的基础上，进行构造应力场模拟，通过构造曲率、最大主应变、最大主应力等参数对构造裂缝分布进行了预测。结果表明构造应力场分布与构造断裂体系之间具有较好的相关关系，裂缝发育带分布在不同方向的两组断层相交部位、正断层或逆断层的上盘附近。裂缝预测的影响因素主要是断层的位置和方向的精度，地层横向厚度和密度变化较大也对预测精度产生影响。With the progress of petroleum exploration techniques, the national petroleum reserves in the sedimentary reservoirs with much better physical properties are gradually discovered and developed. Meanwhile the huge petroleum reserves of the socalled tight reservoirs such as igneous and matrix metamorphic rocks in the sedimentary basins of Huabei, Liaohe and Daqing Oilfields and so on are discovered step by step, so this kind of reservoir has become the new field of oil and gas exploration. Taking East Wuerxun of Hailaer Basin as example, on the basis of 3D seismic data, the established sequence framework and fine fault interpretation, the simulation of the structural stress field is conducted. The distributions of the structural fractures are predicted with the help of the follow parameters： structural curvature, the max. main strain, the max. main stress and so forth. The results show that there is pretty better correlation between the distribution of structural stress field and the system of structural faults ; and too-reover the fractured fissures are well developed nearby the crossed parts, normal faults and upper sides of the reverse faults of two sets of faults with different directions. The influencing factors are mainly the directions of the faults and precision of the directions and furthermore the horizontal thickness of the strata and their density changes also possess much serious influence on the prediction precision.

关 键 词：三维地震 曲葺莲张量 变形张量 应力场张量 构造应力场模拟 裂缝储层预测 

分 类 号：TE122.2[石油与天然气工程—油气勘探]