克拉苏构造带超深储层构造主裂缝识别  

Major Structural Fracture Identification of the Ultra-Deep Reservoir in Kelasu Structural Zone

作　　者：周鹏[1] 周露[1] 朱文慧[1] 罗海宁[1] 王佐涛 Zhou Peng;Zhou Lu;Zhu Wenhui;Luo Haining;Wang Zuotao(PetroCbina Tarim Oilfield Company, Korla, Xinjiang 841000, China)

机构地区：[1]中国石油塔里木油田分公司,新疆库尔勒841000

出　　处：《特种油气藏》2018年第2期42-48,共7页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"塔里木前陆盆地油气富集规律;关键技术与目标评价"(2016ZX05003-004)

摘　　要：针对库车凹陷克拉苏构造带白垩系巴什基奇克组储层垂向上裂缝之间发育特征和规模存在明显差异的问题,通过运用岩心、FMI成像资料的综合解析,在总结不同应力段的裂缝发育特征的基础上,明确了裂缝规模存在主次之分,提出了构造主裂缝的研究思路。研究结果表明:构造同时期形成的构造主裂缝是真正的渗流通道,通过构造倾角校正的方法将倾斜地层还原到水平状态,在剔除众多伴生缝、早期缝的基础上,抽提出规模大于平均裂缝规模、有效性高、倾向与构造倾向相反的构造主裂缝发育位置,为射孔位置优选及储层改造方案优化提供理论依据。The core analysis and FMI imaging data are comprehensively analyzed to identify the fracture properties and scales along the longitudinal direction in the Cretaceous Bashijiqike Formation of Kuqa Depression. Based on the summary of fracture properties in different stress sections, the fracture scales are identified to propose a research approach on the basis of major tectonic fraeture. Research indicates that the major tectonic fractures created during the same period is considered as the effective flow channel. Based on elimiaating many associated and early frac- tures, the inclined stratuin is restored to the horizontal state by inclination correction. The major tectonic fractures with largcr scale than the average size, high activity and opposite dip to that of structure are identified, which could provider certain theoretical reference for reservoir perforation and stimulatiou program optimizations.

关 键 词：库车坳陷 白垩系巴什基奇克组 克拉苏构造带 裂缝特征 构造主裂缝 倾角校正 

分 类 号：TE371[石油与天然气工程—油气田开发工程]