致密储层孔隙结构表征技术及发展趋势  

Characterization Techniques and Trends of the Pore Structure of Tight Reservoirs

作　　者：蒋裕强[1] 陈林[1] 蒋婵[2] 覃明友 文秀[3] 甘辉[1] 王猛[1] 胡朝阳[1] 

机构地区：[1]西南石油大学地球科学与技术学院,四川成都610500 [2]中国石油西南油气田分公司勘探开发研究院,成都610051 [3]西南石油大学理学院,四川成都610500

出　　处：《地质科技情报》2014年第3期63-70,共8页Geological Science and Technology Information

基　　金：国家重大科技专项"页岩气资源评价方法研究"(2011ZX05018-001-002)

摘　　要：随着非常规油气勘探的兴起,致密储层微观孔隙研究备受重视,如何细致精确地研究致密储层的孔隙结构已经成为非常规油气勘探首要解决的问题之一,其对非常规油气勘探层位选取、资源潜力评价和油气渗流能力计算具有重要作用。重点介绍了几种致密储层微纳米孔隙结构表征技术方法及其应用,包括恒速压汞技术、氮气吸附技术、扫描电镜技术、激光共聚焦技术、微纳米CT扫描技术及核磁共振技术,并结合现有研究技术进行了展望。认为致密储层孔隙结构表征技术具有如下发展趋势:按不同层次对致密储层进行不同级别的孔隙结构分析,以对取样点的测试模拟为基础,通过数字岩心技术对整个致密储层结构进行空间构建,可以接近客观、全方位、精确地描述整个储层孔隙特征。With the rise of unconventional oil and gas exploration, the microscopic pore research of tight reservoirs has attracted increasing attention. Determining how to research the pore structure of tight reservoirs precisely and meticulously has become one of the primary issues in unconventional oil and gas exploration, which plays an impor tant role in selecting exploration areas, evaluating resource potential and computing the percolation flow of uncon ventional oil and gas. This paper describes some micro-nano technologies and methods of pore structure character ization and its application to tight reservoirs, including the application of constant-rate mercury penetration, nitro gen adsorption method （NAM）, scanning electron microscopy （SEM）, laser scanning confocal microscope （LSCM）, nano-computed tomography （CT） and nuclear magnetic resonance （NMR）, and present some suggestions combined with the existing techniques. It is considered that the trends of tight reservoir characterization technology is analyzing the pore structures of tight reservoir in different levels and re-constructing the whole tight res ervoir through digital core technology based on simulation tests on the sample location, in order to describe the pore throat characteristics of tight reservoirs objectively, comprehensively and accurately.

关 键 词：致密储层 孔隙结构 表征技术 空间构建 

分 类 号：P618.130.21[天文地球—矿床学]