克深2井区裂缝分类及构造裂缝期次研究  

Fracture classification and tectonic fractures in Keshen 2 well area

作　　者：王凯[1] 王贵文[1,2] 徐渤[1] 王迪[1] 冉冶[1] 

机构地区：[1]中国石油大学(北京)地球科学学院,北京102249 [2]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249

出　　处：《地球物理学进展》2015年第3期1251-1256,共6页Progress in Geophysics

基　　金：国家科技重大专项(2011ZX05020-008);中石油创新基金(2013D-5006-030);国家自然科学基金项目"致密砂岩储层成岩相测井识别方法研究"(41472115)联合资助

摘　　要：利用岩心与薄片资料对克深2井区的裂缝进行分类研究,认为该研究区主要发育构造裂缝、成岩裂缝等.通过对岩心资料、成像测井资料的研究,按照裂缝之间的截切关系,对克深2井区的构造裂缝进行期次划分,认为研究区主要发育3期裂缝:近南北向裂缝为第一期,北西向裂缝为第二期,近东西向裂缝为第三期,另外研究区可见一期较不发育的北东向裂缝.同时结合前人的岩石声发射实验结果,确定研究区各期裂缝形成的时间大致为:北东向裂缝发育于燕山晚期(K/E),近南北向裂缝发育于喜马拉雅早期(E/N),北西向裂缝发育于喜马拉雅中期(N1/N2),近东西向裂缝发育于喜马拉雅晚期(N2/Q).Using the database of the cores and thin sections of keshen 2 well area, the fractures in keshen 2 well area can be classified, and the most developed fractures are structural fractures and diagenetic fractures. Through the study of the database of the core and imaging logging, according to the truncated relations between the fractures, 3 most developed stages of structural fractures in keshen 2 well area can be divided into NS, NW and WE, and the fracture of NS is early- cracking, the fracture of NW is second and the fractures of WE is the last. Besides these three, there is another less developed stage of fractures of NE. Combined with the previous researchers~ results of rock acoustic emission, fractures forming time can be roughly determined： the fractures of NE in the late Yanshan movement （K/E）, the fracture of NS in the early Himalayan movement （E/N） , the fracture of NW in the middle Himalayan movement （N1/N2）, the fractures of WE in the late Himalayan movement （N2/Q）.

关 键 词：克深2井区 裂缝分类 裂缝期次 岩石声发射 成像测井 

分 类 号：P631[天文地球—地质矿产勘探]