徐守立;尤丽;李才;刘才;招湛杰;

• 1:中海石油(中国)有限公司湛江分公司

摘要(Abstract)：

文昌A凹陷10区珠海组以低渗储层为主,部分为中渗特征,储层低渗透、非均质性强是制约研究区增储上产的关键问题。利用铸体薄片、扫描电镜观察、常规压汞、恒速压汞和核磁共振等方法,分析储层渗流能力的微观孔喉结构及影响因素,精细表征其储层孔喉结构,定量评价孔喉结构的差异性。结果表明:文昌10区为原、次生共存的孔隙组合特征,孔隙半径主要分布在90.0~160.0μm之间,喉道半径分布在1.0~6.0μm之间,孔喉结构表现为中—大孔、细—较细喉特征,不同粒级储层物性主要取决于喉道半径;储层类型以Ⅱ、Ⅲ类储层为主,部分为Ⅰ2类。储集岩粒度与压实作用是研究区孔喉结构主要影响因素,次为胶结作用和自生黏土。该结果为研究区天然气勘探开发提供储层综合评价的地质依据。

关键词(KeyWords)：孔喉结构特征;影响因素;低渗储层;珠海组;文昌10区;文昌A凹陷

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2011ZX05023-001-007);; 中国海洋石油总公司科研项目(CNOOC-KJ125ZDXM07LTD02ZJ11)

作者(Author):徐守立;尤丽;李才;刘才;招湛杰;

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