Characteristics of Tight Oil in the Dolomicrite Reservoir: A Case Study of Xingouzui Formation, Jianghan Basin, China

Abstract:

Low-Xingouzui Formation II reservoir in the Xingou region of Jianghan Basin belongs to tight oil reservoir. By means of study about the geochemical characteristics of source rocks, lithology, physical property and pore structure characteristics, this paper confirms that the source rocks of Low-Xingouzui Formation II are mostly above medium in content of organic matter. The hydrocarbon source rocks are mainly of type II. The thermal maturity of most samples is immature-low mature. Dolomicrite and terrigenous clastic (intraclast) dolomite are the most favorable reservoir facies. The reservoir has mid to high porosity and extremely low permeability, and its space is dominated by dolomite dissolution with micro throat pore structure. This oil reservoir distributes widely and quasi continuous, while good conditions of petroleum formation exist. It could hopefully become new increasing point of Jianghan’s oil and gas output that has broad development prospects and studying value.

• Periodical: Applied Mechanics and Materials (Volumes 522-524)
• Pages: 1223-1228
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.522-524.1223
• Online since: February 2014
• Authors: Min Yue Zhou, Long Ming Wei, Ji Rong He, Qiu Ming Pei, Wei Li, Ye Tian
• Keywords: Dolomicrite, Jianghan Basin, Tight Oil, Unconventional Hydrocarbon, Xingouzui Formation

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