新疆石油地质

新疆石油地质 ›› 2000, Vol. 21 ›› Issue (1): 33-37.

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塔里木盆地优质气源岩特征

张宝民, 赵孟军, 肖中尧, 曾强, 吴光宏, 刘静江, 彭燕, 李梅, 王飞宇, 边立曾   

  1. 中国石油天然气集团公司 北京100083
  • 收稿日期:1999-06-11 出版日期:2000-01-01 发布日期:2021-01-15
  • 作者简介:张宝(1956-)男,高级工程师。1989 年获理学顿士学位,.现从事含油气盆地沉积学与烃票岩有机相研究。

Characteristics of Premium Gas Source Rocks in Tarim Basin

Zhang Baomin, Zhao Mengjun, Xiao Zhongrao, Zeng Qiang, Wu Guanghong, Liu Jingjiang, Peng Yan, Li Mei, Wang Feiyu, Bian Lizeng   

  1. Senior Engineer, Petroleum Geology, Research Institute of Petroleum Exploration and Development, CNPC, Beijing 100083
  • Received:1999-06-11 Online:2000-01-01 Published:2021-01-15

摘要： 塔里木盆地优质气源岩(有机碳含量大于等于0．5％)主要赋存于寒武一奥陶系、石炭一二叠系、三叠一件罗系三大层系中,它们具有不同的平面分布规律和不同的岩石学、沉积学、有机地球化学特征。据现今的生烃产物类型评价,则包括了仅能生气的气源岩与既能生油、又能生气的油一气源岩两大类型,从而区别于四川盆地和鄂尔多斯盆地。研究结果表明,特定构造背景下的特殊沉积环境与源岩的有机质类型及其热演化程度三大因素决定气源岩的发育与否及其质量优劣。

关键词: 塔里木盆地, 气源岩, 空间分布, 有机地球化学, 沉积相, 有机质类型, 热成熟度

Abstract: The premium gas source rocks with content of organic carbon equal to or higher than 0.5% in Tarim basin are mostly found in Cambrian-Ordovician, Carboniferous-Permian and Triassic- Jurassie systems which have different horizontal distributions and various characteristics in lithology, sedimentology and organic geochemistry. It is indicated by present evaluation of hydrocarbon source types that there are two types of the products in Tarim basin, i.e. gas source rock where gas is only generated, and oil-gas source rock where both oil and gas are generated, being different from those of Sichuan basin and Erdos basin. The result shows that it is the three major factors, such as special sedimentary environment under special structural setting, types of organic matter in source rocks and degrees of thermal evolution, that control whether gas source rock developed or not and quality of it.

Key words: Tarim basin, Cas source rock, Spatial distribution, Organic geochemistry, Sedimentary facies, Organic matter type, Thermal maturity