新疆石油地质

›› 2014, Vol. 35 ›› Issue (5): 1-1.

• 论文 •    

鄂尔多斯盆地马岭地区长71储集层特征及评价

宁文钰1，文志刚1，胡友清2   

  1. (1.长江大学 a.油气资源与勘探技术教育部重点实验室;b.地球环境与水资源学院,武汉 430100;2.中国石油 长庆油田分公司 超低渗透第四项目部,西安 710000)
  • 出版日期:2019-01-01 发布日期:1905-07-14

Characteristics and Evaluation of Chang71 Reservoir in Maling Area of Ordos Basin

NING Wenyu1a, 1b, WEN Zhigang1a, 1b, HU Youqing,2   

  1. (1.Yangtze University, a.MOE Key Laboratory of Oil and Gas Resources and Exploration Technologies, b. School of Earth Environment and Water Resources, Wuhan, Hubei 430100, China; 2.The Fourth Project Department of UltraLow Permeability Study , Changqing Oilfield Company, PetroChina, Xian, Shaanxi 710000, China)
  • Online:2019-01-01 Published:1905-07-14

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摘要： 利用岩心分析，测井、扫描电镜、铸体薄片和岩石薄片以及压汞等资料，对马岭地区长 71油层的岩性、物性和孔喉特征等进行了研究。 结果表明，研究区长71储集层多以岩屑长石砂岩和长石岩屑砂岩为主，属于低孔-特低孔、特低渗-超低渗储集层，储集空间以粒间孔和长石溶孔为主，储集层非均质性强。利用储集层物性和孔隙结构参数对长71储集层进行评价，研究区主要为Ⅲ 类和 Ⅳ 类储集层，Ⅰ类储集层不发育，Ⅱ类储集层只在局部发育。

Abstract: This paper presents in?depth studies of Chang?71 reservoir in Maling area of Ordos basin in petrology, physical property and pore throat characteristics by core sampling analysis, well logs, SEM, casting thin section and rock slice data as well as mercury injection test information. The results show that this reservoir is dominated by lithic feldspar sandstone and feldspar lithic sandstone, intergranular pore and feldspar dissolved pore, and characterized by low and ultra?low porosity, ultra?low permeability and strong heterogeneity. The comprehensive classification and evaluation suggest that the major reservoirs belong to Type?Ⅲ and Type?Ⅳ, Type?Ⅰ reservoir is undeveloped, and Type?Ⅱ ones are developed locally in this area

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