测井技术2017，Vol.41Issue(6)：685-690,6.DOI:10.16489/j.issn.1004-1338.2017.06.011
基于数字岩心技术的页岩储层可压裂性定量评价
Fracability Quantitative Interpretation of Shale Reservoir Based on Digital Core Technology
摘要
Abstract
Fracability evaluation of shale reservoir has important guiding significance in fracturing operation . Conventional methods get the elastic parameter and the mineral content by core calibration logging to build the brittleness index , w hich not considering the characteristics of reservoir before and after fracturing ,leading to a poor effect in the practical application . To overcome the defects of normal method building a brittleness index based on the elastic parameters and the mineral content can't monitor the fracturing effect dynamically ,a quantitative fracability evaluation method of shale gas reservoir based on digital core is established .According to CT scan images before and after fracturing reconstruct 3D digital core , a minimum circumscribed cuboid technique is used to identify cracks automatically ,then put forward is the primary fracture development index of F1 and mechanical properties index of F2 to characterize the cracks before and after fracturing respectively .On this basis ,single factor analysis and neural network method are used to model F1 and F2 based on logging data .Intuitive and quantitative evaluation of shale gas reservoir fracability of Zhaotong-A well obtains good application effect .关键词
页岩储层/可压裂性/数字岩心/原生裂缝/力学特性指数/定量评价Key words
shale reservoir/fracability/digital core technology/primary fracture/mechanical properties index/quantitative interpretation分类
天文与地球科学引用本文复制引用
范宜仁,李格贤,冀昆,朱大伟,张茜..基于数字岩心技术的页岩储层可压裂性定量评价[J].测井技术,2017,41(6):685-690,6.基金项目
国家自然科学基金(41474100,41674131,41404086) （41474100,41674131,41404086）
国家科技重大专项(2017ZX05039002) （2017ZX05039002）
中央高校基本科研业务费专项资金(16CX06048A,17CX06041) （16CX06048A,17CX06041）
