| 中国叠合型盆地复合含油气系统的基本特征 |
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| 引用本文： | 何登发,赵文智,雷振宇,瞿辉,池英亮.中国叠合型盆地复合含油气系统的基本特征[J].地学前缘,2000,7(3):23-37. |
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| 作者姓名： | 何登发 赵文智 雷振宇 瞿辉 池英亮 |
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| 作者单位： | 中国石油勘探开发研究院,北京,100083 |
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| 基金项目： | 中国石油天然气集团公司科技工程资助项目!(97021102 )，国家973!(G1999043312)课题资助项目 |
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| 摘 要： | 中国叠合型含油气盆地具有演化历史漫长、多阶段构造演化、充填层系多的特点。所发育的含油气系统常具有油气混源、多储集层系、运聚方式组合多变与成藏期次多的特点 ,很难用Magoon和Dow( 1994 )的概念对其进行确切描述。文中从中国含油气系统的特点出发 ,提出了“复合含油气系统”的概念 ,并建立相应的划分及评价方法。中国复合含油气系统有叠置型、运聚变异型、相向汇聚型、断层贯通型、油气分异型、共盖型及改造型等 7种常见类型 ,每一叠合盆地含有上述 1种或多种类型。如中国中西部前陆克拉通叠合型盆地以冲断带断层贯通型与前陆斜坡不整合面运聚型为特色 ,而东部断陷坳陷叠合型盆地则以叠置型复合含油气系统为主 ,南方残留新生型叠合盆地则以改造型复合含油气系统占主导 ,因此每类盆地的复合含油气系统的特点与勘探手段并不一致。复合含油气系统描述是油气勘探战略选区的基础 ,油气运聚单元的划分与评价则是制定油气勘探方向的关键 ,现代勘探技术的综合配套应用是提高中国复合含油气系统勘探成效的根本保证。
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| 关 键 词： | 含油气系统 复合 叠合盆地 中国 |
CHARACTERISTICS OF COMPOSITE PETROLEUM SYSTEMS OF SUPERIMPOSED BASINS IN CHINA |
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| HE Deng-fa,ZHAO Wen-zhi,LEI Zhen-yu,QU Hui,CHI Ying-liu.CHARACTERISTICS OF COMPOSITE PETROLEUM SYSTEMS OF SUPERIMPOSED BASINS IN CHINA[J].Earth Science Frontiers,2000,7(3):23-37. |
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| Authors: | HE Deng-fa ZHAO Wen-zhi LEI Zhen-yu QU Hui CHI Ying-liu |
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| Abstract: | The superimposed petroliferous basins in China are characterized by long evolutionary history, multiple stages of tectonic evolution, and multiple depositional sequences. The petroleum systems in these basins present complexities of multiple kitchens with multiple source rocks, multiple phases of petroleum generation-migration-accumulation, multiple oil and gas intervals, and multiple critical moments involved in their formiations. It is difficult to characterize such petroleum systems by applying the concepts proposed by Magoon & Dow (1994). Based on the complexities of the formation and features of the petroleum systems in China, this paper proposes the concept of the composite petroleum system, and the methods of the classification and evaluation. The basic types of composite petroleum systems in China include the stacking, variable migration and accumulation, fault connection, common sealing, and modification etc. Each superimposed basin consists of one or more of petroleum systems. The superimposed basins of foreland and cratonic in western and central China are characterized by fault connection composite petroleum system in fold and thrust belts, and by composite petroleum systems migrating and accumulating along unconformities. The superimposed basins of fault sag and depression in eastern China are characterized by stacking composite petroleum system. The superimposed basins of remnant and new born in southern China are characterized by modified composite petroleum system.The features of composite petroleum system in each type basin are much different, and also for its exploration methods. The characterization of composite petroleum system is the basis for choosing the exploration area. The division and evaluation of petroleum migration and accumulation unit are critical to proposing the prospect of petroleum exploration. Integration of modern exploration techniques plays an important role in the promoting efficiency of oil and gas exploration of the composite petroleum systems in China. |
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| Keywords: | petroleum system composite superimposed basin Chinad |
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