新疆石油地质

新疆石油地质 ›› 2008, Vol. 29 ›› Issue (1): 48-52.

• 油气勘探 • 上一篇    下一篇

塔里木盆地北部古近系-白垩系成岩相及其储集性能

薛红兵1, 朱如凯2, 郭宏莉2, 高志勇2, 张丽娟3, 孙玉善3   

  1. 1.中国地质大学能源学院, 北京100083;
    2.中国石油石油勘探开发科学研究院石油地质实验研究中心, 北京100083;
    3.中国石油塔里木油田分公司勘探开发研究院, 新疆库尔勒841000
  • 收稿日期:2007-02-07 发布日期:2020-08-10
  • 作者简介:薛红兵(1966-),女,河北丰润人,高级工程师,在读博士研究生,石油地质, (Tel) 010-64523221(E-mail) xuehb@cnpc.com.cn.

Diagenetic Facies and Reservoir Quality of Paleogene-Cretaceous in Northern Tarim Basin

XUE Hong-bing1, ZHU Ru-kai2, GUO Hong-li2, GAO Zhi-yong2, ZHANG Li-juan3, SUN Yu-shan3   

  1. 1. China University of Geosciences, Beijing 100083, China;
    2. Experimental Center of Petroleum Geology, Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;
    3. Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China
  • Received:2007-02-07 Published:2020-08-10

PDF

211

摘要： 塔里木盆地北部地区白垩系-古近系储集层岩性主要为处于中成岩阶段的岩屑砂岩和长石岩屑砂岩。在不同地区和不同层段, 岩石组成、成岩矿物组合、成岩演化、孔隙组合类型有明显的差异; 根据储集层中自生矿物种类、分布、生成顺序、孔隙类型组合和孔隙形成特征以及构造作用等对储集性能的影响, 将古近系-白垩系储集层成岩相划分为强胶结挤压致密型成岩相、中等胶结溶解型成岩相和弱胶结成岩相, 其中以方沸石和白云石组合胶结为主的储集层物性最好。根据不同地区、不同构造带古近系、白垩系储集层岩性、物性参数等将本区储集层分为4 个级别: Ⅰ、Ⅱ类储集层可以作为油气勘探的主要目的层, Ⅲ类储集层属低渗透储集层可以作为寻找天然气的目的层, 而Ⅳ类储 集层为特低孔特低渗非常致密型储集层, 甚至为非储集层。

关键词: 塔里木盆地, 白垩系, 古近系, 成岩演化, 成岩相, 储集性能

Abstract: The Paleogene-Cretaceous reservoirs with lithic sandstone and greywacke lithic sandstone in northern Tarim basin is mainly in stage of medium diagenesis, and have obvious differentces among them in different areas, different intervals, rock composition, diagenetic evolution, diagentic mineral assemblage and pore type. This paper presents the diagenesis classification in terms of authigenic mineral type, distribution and genetic order as well as the effect of pore type assemblage, pore characteristic and tectonic action on the reservoirs, including the intense cementation and compaction diagenetic facies, the medium cementation and dissolution diagenetic facies and weak cementation diagenetic facies, among which the reservoirs with analcite-dolomite cementation are the best ones. Also, the reservoir quality is divided into four types of reservoirs base on the lithologic and pethophysical parameters of Paleogene and Cretaceous in different areas and different structural belts. TypeⅠ and Type II reservoirs could be as the main targets for oil and gas exploration, Type III low permeability reservoir is as the target for gas exploration, and Type IV reservoir with super low porosity-permeability and compaction even belongs to non-reservoir.

Key words: Tarim basin, Cretaceous, Paleogene, diagenesis, diagenetic facies, reservoir quality

中图分类号: