Reservoir characteristics of Jurassic in Yuka-Jiulongshan area,northern margin of Qaidam Basin

  • HUANG Xiangguang
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  • 1. Research Institute of Exploration and Development, PetroChina Qinghai Oilfield Company, Dunhuang 736202, China; 2. Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000, China; 3. University of Chinese Academy of Sciences, Beijing 100049, China

Online published: 2013-02-20

Abstract

By means of cores, cast thin sections, scanning electron microscope and testing data, this paper studied the reservoir pore structure characteristics of Jurassic in Yuka-Jiulongshan area in northern margin of Qaidam Basin, and analyzed the controlling factors of reservoir development. The result shows that the reservoir spaces in the study area are mainly primary intergranular pores, dissolved pores and microfractures, among which dissolved pores are dominated and play important role in improving the reservoir properties. The reservoir mainly experienced such actions as compaction, cementation and dissolution. Especially the cementation and dissolution are the main reason of generating the secondary pore in Yuka-Jiulongshan area.

Cite this article

HUANG Xiangguang . Reservoir characteristics of Jurassic in Yuka-Jiulongshan area,northern margin of Qaidam Basin[J]. Lithologic Reservoirs, 2013 , 25(1) : 63 -68 . DOI: 10.3969/j.issn.1673-8926.2013.01.013

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