低序级断层的成因类型特征与地质意义  

Genetic types of low-grade faults and their geologic significance

作　　者：罗群[1] 黄捍东 王保华 刘洪昌 

机构地区：[1]中国石油大学(北京)盆地与油藏研究中心,北京102200 [2]北京石大博创复杂油气藏技术开发中心,北京102200 [3]中国石油华北油田分公司第四采油厂,河北廊坊065000

出　　处：《油气地质与采收率》2007年第3期19-21,25,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家重大基础研究"973"项目"中国叠合盆地油气富集特征"(G19990433)的研究成果

摘　　要：由于利用常规地球物理方法难以识别低序级断层,因此依据产生低序级断层应力场的特征,可将低序级断层划分为拉张正断层、拉张—走滑断层、挤压逆断层、挤压—走滑断层和走滑断层5种成因类型;并且低序级断层与高序级断层或低序级断层之间常呈Y型、反入型、地垒型、阶梯型和地堑型等多种断裂组合类型。低序级断层的存在,使断块内油气水关系更加复杂,增大了注采矛盾;准确识别低序级断层,有利于解决注采矛盾,制定有效的开发方案和措施。Mini-or micro-faults can not be recognized using common geophysics methods.According to characteristics of stress field,the low-grade faults are divided into five genetic types:tensional normal fault,tensional strike-slip fault,compression reverse fault,compression-strike slip fault and strike-slip fault.There are many combination types,such as Y pattern,horst type,step type and graben pattern between the low-grade faults and high-grade faults or between low-grade faults and low-grade faults.The low-grade faults make the relationship among oil,gas and water more complex in fault blocks,and intensify the contradiction between injection and production.It is beneficial to solve the contradiction between injection and production and to work out effective development project and measure for accurate identifying the low-grade faults.

关 键 词：低序级断层 成因类型 分布模式 油田开发 

分 类 号：TE347[石油与天然气工程—油气田开发工程]