敦煌盆地中、下侏罗统含油气系统分析

江平; 范小林

敦煌盆地中、下侏罗统含油气系统分析

江平^{1, 2, 3},
范小林^{3, 4}

1.
中国地质大学研究生院, 湖北武汉 430074
2.
中国石化石油勘探开发研究院荆州新区勘探研究所, 湖北荆州 434100
3.
中国石化石油勘探开发研究院西部分院, 新疆乌鲁木齐 830011
4.
中国石化石油勘探开发研究院无锡实验地质研究所, 江苏无锡 214151

详细信息

作者简介:
江平(1962—),男,高级工程师,博士生,主要从事油气地质勘探、评价工作

中图分类号: P618.1
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- 被引次数: 0
出版历程
- 收稿日期: 2004-07-15
- 刊出日期: 2005-03-25

Analysis of Middle-Lower Jurassic Petroleum System in Dunhuang Basin

JIANG Ping^{1, 2, 3},
FAN Xiao-lin^{3, 4}

1.
Graduate School, China University of Geosciences, Wuhan 430074, China
2.
Jingzhou Institute of Petroleum Exploration Development Research Institute, SINOPEC, Jingzhou 434100, China
3.
West Branch of Petroleum Exploration Development Research Institute, SINOPEC, Urumchi 830011, China
4.
Wuxi Experimental Geology Institute of Petroleum Exploration Development Research Institute, SINOPEC, Wuxi 214151, China

摘要

摘要: 敦煌盆地油气勘探能否取得突破取决于盆地中源岩的生烃潜能和圈闭的有效性.运用含油气系统研究思路, 结合野外露头观察和盆地充填序列特征的分析, 对盆地侏罗系含油气系统的地质要素(源岩、储集岩、盖层及上覆岩层) 和作用过程(可能生成的油气运移、聚集、圈闭) 进行定性评价和综合解释, 结合露头岩样的有机地化分析和露头剖面的油气地质解释, 推测出该盆地西端南部中、下侏罗统的暗色泥岩和含煤岩系中的炭质页岩为主要的烃源岩, 而其间的不整合面上的砂岩层为主要的储集体和主要的油气勘探目的层系.
- 油气勘探 /
- 含油气系统 /
- 中、下侏罗统 /
- 敦煌盆地
Abstract: Source rock potential and trap efficiency determine the success of petroleum exploration in the Dunhuang basin, Gansu Province, China. According to the integrated analysis of surface section and sedimentary sequences, the authors analyze the geological elements (source rocks, reservoir, sealing and overlaid rocks) and processes (migration, accumulation and trapping) of the Middle and Lower Jurassic petroleum system in the Dunhuang basin. The results indicate that the Middle and Lower Jurassic dark mudstones and carbonous shales in coal-bearing measures have been inferred to be the main source rocks in the southwestern basin, there is a possibility of using petroleum system theory in the exploration of the Dunhuang basin, Gansu Province in China, and the sandstones lying above the unconformities may be taken as the main targets for hydrocarbon exploration.
- hydrocarbon exploration /
- hydrocarbon-bearing system /
- Middle and Lower Jurassic /
- Dunhuang basin

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图 1 敦煌盆地构造单元

①.南湖北凸起; ②.安西北凸起; ③.独山子凸起; ④.万佛峡凸起; ⑤.踏西凸起

Fig. 1. Classification of geological units in Dunhuang basin

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图 2 敦煌盆地侏罗系残余厚度分布(单位m)

Fig. 2. Distribution of Jurassic residual thickness in Dunhuang basin

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图 3 敦煌盆地侏罗系充填层序柱状图

Fig. 3. Filling sequences of Jurassic in Dunhuang basin

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图 4 敦煌盆地油气生成、聚集区

Fig. 4. Areas of hydrocarbon generation and accumulation in Dunhuang basin

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图 5 敦煌盆地J_1-2含油气系统事件

Fig. 5. Event chart of J_1-2 petroleum system in Dunhuang basin

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