收稿日期: 2011-04-02
修回日期: 2011-05-23
网络出版日期: 2011-08-10
Diagenesis of Chang101 Sandstone Reservoir in Ansai Oilfield of Ordos Basin
Received date: 2011-04-02
Revised date: 2011-05-23
Online published: 2011-08-10
辛红刚, 张振红, 云正文, 刘晓英 . 鄂尔多斯盆地安塞油田长101段储层砂岩成岩作用研究[J]. 天然气地球科学, 2011 , 22(4) : 588 -594 . DOI: 10.11764/j.issn.1672-1926.2011.04.588
Based on measurement of thin section,casting thin section,scanning electron microscope,and X-ray diffraction for Chang 101 sandstone reservoir,we use the quantitatively calculating methods to study the diagenesis of Chang 101 sandstone reservoir in the Ansai oilfield. The feldspar sandstone is dominant n the sandstone.The diagenesis of sandstone reservoir is fallen into the middle degree stage B.The actions for the poor-quality reservoir are both early compaction and cementation of several minerals.Dissolution (especially feldspar and laumontite dissolution) is a factor for improving the reservoir property.Considering diagenetic types and quantitative characters,five kinds of diagenetic facies are classified.the diagenetic facies control the distribution of the highly permeable reservoir.
Key words: Ansai oil field; Diagenesis; Diagenetic facies.
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