准噶尔盆地马湖凹陷西部侏罗系油源特征

IF 0.6 4区工程技术 Q4 ENERGY & FUELS

Journal of The Japan Petroleum Institute Pub Date : 2021-03-01 DOI:10.1627/JPI.64.67

Zhenglu Xiao, Shijia Chen, Longxiang Tang, Guibin Wang, Meimei Han

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引用次数: 3

摘要

近年来，准噶尔盆地马湖凹陷西北缘勘探取得重要突破。据估计，该地区的石油蕴藏量可达1亿吨岩性油气藏。侏罗系八道湾组已发现一定规模的油藏，表明侏罗系储层具有良好的勘探前景。研究了侏罗系原油和二叠系烃源岩的地球化学特征及成藏因素。结果表明，碳同位素值(δ 13c)和生物标志物参数(γ / c30h和c24tet / c26tt)在油源对比中具有较好的应用价值。侏罗系原油来源于二叠系丰城烃源岩。p1烃源岩主要排烃期为晚二叠世—中白垩世。原油通过断裂或叠加砂体向上运移至侏罗系岩性圈闭。

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Source of the Jurassic Oil in the Western Mahu Sag of Junggar Basin, NW China

In recent years, important breakthroughs have been made in the exploration of the northwestern margin of Mahu sag in Junggar basin. The estimated amount of oil deposits in this region seems to be as large as 100-million-ton lithologic reservoir. A certain scale of oil reservoirs was found in the Jurassic Badaowan formation, which indicates that the Jurassic reservoir has promising prospects for exploration. The geochemical characteristics of Jurassic crude oil and Permian source rocks and oil accumulation factors are studied in this paper. The results show that carbon isotope values ( δ 13 C) and the biomarker parameters ( γ /C 30 H and C 24 Tet/C 26 TT) have a good application in oil source correlation. Crude oil in Jurassic reservoir was generated from Permian Fengcheng (P 1 f) source rock. The main hydrocarbon expulsion period of the P 1 f source rock was between late Permian and middle Cretaceous. The crude oil migrated upward into the Jurassic lithologic traps through faults or superimposed sand bodies.

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来源期刊

Journal of The Japan Petroleum Institute 工程技术-工程：石油

CiteScore

1.70

自引率

10.00%

发文量

审稿时长

>12 weeks

期刊介绍： “Journal of the Japan Petroleum Institute”publishes articles on petroleum exploration, petroleum refining, petrochemicals and relevant subjects (such as natural gas, coal and so on). Papers published in this journal are also put out as the electronic journal editions on the web. Topics may range from fundamentals to applications. The latter may deal with a variety of subjects, such as: case studies in the development of oil fields, design and operational data of industrial processes, performances of commercial products and others