元坝气田须四段断裂带裂缝预测  

FRACTURE PREDICTION IN THE FAULT BELT OF XU MEMBER 4 IN YUANBA GASFIELD

作　　者：张冲[1] 周文[1,2] 谢润成[1,2] 姚勇[1] 周珂立 张城纬[1] 

机构地区：[1]成都理工大学能源学院,四川成都610059 [2]油气藏地质及开发工程国家重点实验室,四川成都610059 [3]中海石油有限公司湛江分公司,广东湛江524057

出　　处：《大庆石油地质与开发》2015年第1期11-17,共7页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学基金项目"油气藏天然裂缝有效性定量表征技术研究"(41202096)资助

摘　　要：为明确元坝气田须四段断裂带裂缝分布,依据岩心、薄片、测井等资料分析了裂缝特征和断裂作用、岩层厚度、岩石性质对岩石破裂的影响,确定了岩层厚度、断层分布、断裂效应及岩性分布等因素的权重因子,并采用"多参数非线性综合加权"法对裂缝进行了预测。结果表明:岩性和岩层厚度是岩石破裂的基础,岩层越薄裂缝越发育;断层是岩石破裂的直接因素,断裂效应集中区断层规模越大及距离断层越近裂缝越发育。To ensure the fracture distribution of the fault belt in Xu Member 4 of Yuanba Gasfield, on the bases of the core, thin section, well logging data and so on, the fracture characteristics and influences of the faulting action, strata thickness, rock properties on the rock burst and break etc are analyzed, and moreover the weighting factors of the thickness, fault distribution and fracture effects and lithological distribution are determined. With the help of the method of multi-parameter comprehensive nonlinear weight, the fractures are predicted. The results show that the lithology and thickness are the foundation of the rock burst, the thinner of the strata thickness, the more well- developed for the fractures; the faults are the direct factor of the rock burst, the more concentrated of the fault effects, the bigger the scale of the faults and the closer distance to the faults, the more well-developed of the frac- tures.

关 键 词：断裂带裂缝 断裂效应 裂缝特征 控制因素 非线性加权 须四段 元坝气田 

分 类 号：TE121.3[石油与天然气工程—油气勘探]