新疆石油地质

新疆石油地质 ›› 2008, Vol. 29 ›› Issue (1): 41-44.

• 油气勘探 • 上一篇    下一篇

柴达木盆地西部油泉子油田浅层油藏储集层特征

梁昌国1, 林承焰1, 王国民2, 刘健2, 张永梅2   

  1. 1.中国石油大学地球资源与信息学院, 山东东营257061;
    2.中国石油青海油田分公司勘探开发研究院, 甘肃敦煌736202
  • 收稿日期:2007-03-30 发布日期:2020-08-10
  • 作者简介:梁昌国(1975-), 男, 四川遂宁人, 在读博士研究生, 石油地质,(Tel) 13706360252(E-mail) liangcguo@163.com.

Characteristics of Shallow Oil Reservoir in Youquanzi Field in Western Qaidam Basin

LIANG Chang-guo1, LIN Cheng-yan1, WANG Guo-min2, LIU Jian2, ZHANG Yong-mei2   

  1. 1. Faculty of Geo-Resource and Information, China University of Petroleum, Dongying, Shandong 257061, China;
    2. Research Institute of Exploration and Development, Qinghai Oilfield Company, PetroChina, Dunhuang, Gansu 736202, China
  • Received:2007-03-30 Published:2020-08-10

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摘要： 柴达木盆地西部油泉子油田浅层油藏的主要含油层系为新近系上新统上油砂山组(N22), 为岩性-构造油藏。针对研究区储集层岩性认识不清, 储集空间存在争议, 依据岩心分析、成像测井和压汞、薄片等大量室内分析化验资料,对储集层的结构特征、储集物性以及对储集性能的主控因素进行了研究。指出油泉子油田浅层油藏储集层岩性主要为砂质泥晶灰岩、少量藻灰岩(含粉砂)和灰质(泥质)粉砂岩; 储集空间类型主要为粒间孔、溶孔; 储集层物性最好的为藻灰岩(含粉砂), 其次为砂质泥晶灰岩和灰质(泥质)粉砂岩; 储集性能的主要控制因素包括沉积微相、断裂作用、晚期沿断裂带大气淡水的溶解作用、有机酸的溶解作用等。

关键词: 柴达木盆地, 新近系, 储集层, 特征

Abstract: The main oil-bearing series in Youquanzi shallow oil reservoir in western Qaidam basin is Shangyoushashan formation of Neocene (N2 2), being a lithologic-structural reservoir. Based on core analysis, imaging log, mercury injection, cast thin section, etc., this paper analyzes the main control factors to the structure, petrophysical property and reservoir quality in this studied area. It is pointed out that the lithology in this reservoir mainly includes sandy micrite limestone, (silty) algal limestone and limy (muddy) siltstone; reservoir spaces include intergranular pore and solution pore; the best lithology is (silty) algal limestone, and the second are silty micrite limestone and limy (muddy) siltstone. The main controlling factors for reservoir quality include sedimentary microfacies, fault/fracture action, atmospheric water solution along fault zones and organic acid solution.

Key words: Qaidam basin, Neocene, reservoir, feature

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