Formation Conditions of Shale Oil Reservoir in the Second Member of Kongdian Formation in Southern Kongdian Area, Huanghua Depression
详细信息
- 责任者：Dong Qingyuan (College of Geosciences ; China University of Petroleum ; Beijing 102249 ; China) ; Liu Xiaoping
- 刊名：Natural Gas Geoscience
- 出版年：2013
- 卷期：24(1)
- 关键词：油气藏形成 ; reservoir formation ; 黄骅坳陷 ; Huanghua Depression
- 页码：p.188-198
- 图表：illus., 3 tables, 20 refs.
- 分类号：1003
- issnNo：ISSN1672-1926
- isbnNo：CN62-1177/TE
摘要
The black mud shale in the second Member of Kongdian Formation is the important source rock of oil and gas fields in southern Kongdian,Huanghua depression.Oil and gas shows are extensively found in the mud shale during conventional oil and gas exploration.The results indicate that semi-deep-deep lacustrine sedimentary environment controlled the development and distribution of the organic matter-riched mud shale and interlayer in the member,the black shale is the thickest in the depocenter in the deep abyss.The black mud shale in the second member of Kongdian Formation is characterized by large thickness,wide distribution,good organic matter type,high content of organic matters and proper maturity.The reservoir is various in reservoir spaces and types and is enriched with sand,siliceous and fragile minerals,which have the characteristics of low permeability and low porosity because of its compactness.The oil reservoir was restricted by lithology rather than local structures,which have certain abnormal reservoir characteristics.In the conventional exploration,a large amount of oil and gas shows and small-scale oil and gas flow have been encountered in these areas,so they possess the beneficial geological conditions to form shale oil reservoirs.The second member of Kongdian Formation in southern Kongdian area is abundant in shale oil,especially some blocks,like Wangguantun-Zaoyuan,can be taken as the favorable target areas in recent exploration of shale oil and they were hoped to have a breakthrough by old wells re-examination and sand fracturing.
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