石油与天然气地质 ›› 2002, Vol. 23 ›› Issue (4): 387-391,396.doi: 10.11743/ogg20020418

• 油气空间 • 上一篇    下一篇

苏里格庙气田碎屑岩储集层特征与天然气富集规律

李文厚1, 魏红红2, 马振芳3, 屈红军1, 刘锐娥1, 陈全红1   

  1. 1. 西北大学大陆动力学教育部重点实验室, 陕西西安, 710069;
    2. 中石化石油勘探开发研究院, 北京, 100083;
    3. 长庆油田公司, 陕西西安, 710021
  • 收稿日期:2002-10-14 出版日期:2002-12-25 发布日期:2012-01-16
  • 基金项目:

    国家自然科学基金(49872009)资助;中国石油长庆油田分公司基金资助

CHARACTERISTICS OF DETRITAL RESERVOIRS AND REGULARITY OF GAS CONCENTRATION IN SULIGEMIAO GAS FIELD

Li Wenhou1, Wei Honghong2, Ma Zhenfang3, Qu Hongjun1, Liu Ruie1, Chen Quanhong1   

  1. 1. The Key Laboratory of Continental Dynamics, the Ministry of Education, Department of Geology, Northwest University, Xi'an;
    2. Research Institute of Petroleum Exploration and Development, SINOPEC, Beijing;
    3. Changqing Oil company Xi'an, Shannxi
  • Received:2002-10-14 Online:2002-12-25 Published:2012-01-16

PDF (PC)

536

被引次数

93

摘要：

苏里格庙地区二叠系山西组山 1、山2段和石盒子组盒 8段储层岩石类型主要有石英砂岩、砂屑石英砂岩和岩屑砂岩,其成分成熟度较好,结构成熟度中等,并经历了压实作用、胶结作用和溶解作用等成岩作用,发育次生溶蚀孔、原生残余粒间孔和晶间孔。根据物性参数、毛管压力曲线及孔隙组合关系等,将苏里格庙地区储层划分为4种类型。研究发现,辫状河和曲流河河道砂坝、辫状河三角洲和曲流河三角洲平原分流河道、辫状河三角洲和曲流河三角洲前缘水下分流河道是区内天然气的有利储集相带,并控制着高渗储层的分布,分选好、石英含量高、粒度较粗的石英砂岩是形成有利储层的基础,次生孔隙的发育是形成高渗储层的关键。

关键词: 苏里格庙, 储集层, 成岩作用, 孔隙结构, 有利相带

Abstract:

Quartz sandstone, lithic quartz sandstone and lithic sandstone are main types of reservoir rock in Shan Member-Ⅰ,Ⅱ of Shanxi Formation and He Member-Ⅷ of Shihezi Formation in the Permian in Suligemiao region. Those rocks, with good maturation in composition and moderate maturation in texture, have experienced diagenesis of compaction, cementation and dissolution and have formed secondary solution pore, primary residual inter-granular pore space and intercrystalline pore. Reservoir in the region can be divided into four types on the basis of its physical property, capillary pressure curves and relations of pore combination. It is discovered by studying that braided and meandering stream channel sand bars, delta plain branch channels and underwater branch channels in braided and meandering stream delta front are favorite reservoir belts in this region, which control the distribution of highly permeable reservoir. The well graded quartz sandstone with high content of quartz and coarse quartz is the foundation for forming good reservoir. The development of secondary pore is the key for forming highly permeable reservoir.

Key words: Suligemiao, reservoir, diagenesis, pore texture, facies belt

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