西南石油大学学报(自然科学版) ›› 2008, Vol. 30 ›› Issue (6): 57-61.DOI: 10.3863/j.issn.1000-2634.2008.06.014

• 地质勘探 • 上一篇    下一篇

致密砂岩成岩作用及其对储层的影响

雷卞军1 刘斌2 李世临3 王小蓉4 刘华明5   

  1. 1.西南石油大学资源与环境学院,四川 成都 610500; 2.吉林油田勘探开发研究院天然气所,吉林 松原 138000;3.西南油气田分公司川东气矿,重庆 400000; 4.西南油气田分公司川中油气矿,四川 遂宁 629000;5.吉林油田长春采油厂,吉林 长春 130000
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-12-20 发布日期:2008-12-20

DIAGENESIS OF TIGHT STANDSTONE AND THE INFLUENCE ON RESERVOIR

LEI Bian-jun1 LIU Bin2 LI Shi-lin3 WANG Xiao-rong4 LIU Hua-ming5   

  1. 1.Resource and Environment Institute,Southwest Petroleum University,Chengdu Sichuan 610500,China;2.Institute of National Gas,Exploration and Development Research Institute,Jilin Oilfield Company,Songyuan Jilin 138000,China;3.East Sichuan Gas Field,Southwest Oil and Gas Field Company,Chongqing 400000,China;4.Central Sichuan Oil and Gas Field,Southwest Oil and Gas Field Company,Suining Sichuan 629000,China;5.Changchun Oil Production of Jilin Oilfield Company,Changchun Jilin 130000,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-12-20 Published:2008-12-20

摘要: 针对鄂尔多斯盆地乌审旗地区上古生界山1-盒8段地层为一套富含同沉积火山物质的致密砂岩,其成岩作用与孔隙演化关系密切的实际,在沉积相研究基础上,利用X衍射、扫描电镜和20口井的300余块常规薄片观察分析得出:本区盒8、山1段砂岩储集层主要成岩作用有水化反应、压实作用、碎屑物质的蚀变作用、交代作用、胶结作用、溶蚀作用。其成岩序列为水化反应-压实作用-石英次生加大-(火山物质的碳酸盐化、火山物质和长石的高岭石化、火山物质的硅化作用)-溶蚀作用-高岭石胶结-自生石英胶结-方解石胶结。压实和溶蚀作用分别为主要破坏性成岩作用和建设性成岩作用,二者对砂岩储层孔隙发育影响较大

关键词: 鄂尔多斯盆地, 上古生界, 砂岩, 成岩作用, 孔隙演化

Abstract:

The sandstone reservoirs of Shan1He8 member are tight quartz sandstones with many syndepositional volcanics in upper palezoic sandstone of Wushenzhao

Tongwangcheng area,there is a tight relation between depositiondiagenesis and pore evolution.On the basis of the sedimentary facies research,according to the data of

Xdiffraction,scanning electron microscope and more than 300 rock slides from 20 wells,it is pointed out that the main diagenesis of sandstone reservoirs are hydrate

reaction,compaction,alteration of detrital material,metasomasis,cementation and dissolution in the sandstone reservoirs of He8,Shan1 member.The digenetic series are

hydrate reaction  compaction  secondary growth of quartz  (carbonatation of volcanics,kaolinization of volcanics and feldspar,silication of volcanics) 

dissolution  cementation of authigenous quartz  cementation of kaolinite  cementation of calcite.Compaction is main destructive diagenesis,while dissoluion is

main constructive diagenesis,both of them impact reservoirs a lot.

Key words: Ordos Basin, upper Palezoic, sandstone, diagenesis, pore evolution

中图分类号: