| 四川盆地宣汉—达州地区下沙溪庙段储层特征研究 |
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| 引用本文： | 何仕碧,戴鸿鸣,王建. 四川盆地宣汉—达州地区下沙溪庙段储层特征研究[J]. 天然气勘探与开发, 2011, 34(3): 4-7 |
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| 作者姓名： | 何仕碧 戴鸿鸣 王建 |
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| 作者单位： | 1. 西南石油大学资源与环境学院
2. 中国石油吐哈油田公司开发都 |
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| 摘 要： | 通过岩心、普通薄片及铸体薄片的观察、物性分析、X-衍射等分析手段,对四川盆地宣汉—达州地区下沙溪庙段的储层特征进行了研究。结果表明,研究区下沙溪庙段储层孔隙类型以残余原生粒间孔和粒间溶孔为主,次为粒内溶孔,发育少量粒缘缝、微裂缝,储层喉道几何形态主要为缩颈喉道、片状喉道、管束状喉道。平均孔隙度为2.27%,平均渗透率为0.21mD,整体以低孔-低渗为特征;储层的孔隙度与渗透率基本呈指数正相关关系,孔-渗相关性较好。
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| 关 键 词： | 四川盆地 宣汉—达州地区 下沙溪庙段 储层特征 |
RESERVOIR CHARACTERISTICS OF LOWER SHAXIMIAO FORMATION IN Xuanhan-Dazhou AREA,SICHUAN BASIN |
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| HE Shibi,DAI Hongming , WANG Jian.. RESERVOIR CHARACTERISTICS OF LOWER SHAXIMIAO FORMATION IN Xuanhan-Dazhou AREA,SICHUAN BASIN[J]. Natural Gas Exploration and Development, 2011, 34(3): 4-7 |
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| Authors: | HE Shibi DAI Hongming WANG Jian. |
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| Affiliation: | HE Shibi1,DAI Hongming1 and WANG Jian2(1.School of Resources and Environment,Southwest Petroleum University,2.Development Division,PetroChina Tuha Oilfield Company). |
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| Abstract: | In this study,the reservoir characteristics of Lower Shaximiao Formation in Xuanhan-Dazhou area,Sichuan Basin,are studied based on core observation,thin-section analysis and X-refraction of casting thin-section.Results show that :(1) pore types mainly include residual primary intergranular pore and intergranular dissolution pore,second for intragranular dissolution pore,with a little grain edge fracture and microfracture;(2) for throat,its geometry is mainly necking,sheetlike and tube-bundle throats;(3) thi... |
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| Keywords: | Sichuan Basin Xuanhan-Dazhou area Lower Shaximian Formation reservoir characteristics |
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