石油与天然气地质 ›› 1992, Vol. 13 ›› Issue (2): 219-228.doi: 10.11743/ogg19920211

• 论文 • 上一篇    下一篇

伊犁盆地石炭-二叠系石油地质特征

王秀乾   

  1. 地质矿产部石油地质综合大队 湖北 江陵 434100
  • 收稿日期:1990-03-02 修回日期:1992-02-17 出版日期:1992-06-25 发布日期:2012-01-16

PETROLEUM GEOLOGICAL PROPERTIES OF PERMOCARBONIFEROUS IN ILI BASIN

Wang Xiuquan   

  1. Comprehensive Research Institute of Petroleum Geology, MGMR, Jiangling, Hubei
  • Received:1990-03-02 Revised:1992-02-17 Online:1992-06-25 Published:2012-01-16

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548

摘要：

伊犁盆地阿克沙克组(C1a)、铁木里克组(P2t)的有机质丰度较高,有机质类型以腐殖型为主,均已成熟,生储盖条件匹配合理,各类圈闭发育,有希望找到油气田。

关键词: 伊犁盆地, 石炭系, 阿克沙克组, 二叠系, 铁木里克组, 含油气评价

Abstract:

Ili Basin is a Permo-Carboniferous basin that developed on Proterozoic basement with an area of 2.3?104 km2 and the maximum thickness of 10000m and over.The Lower Carboniferous Aksak Formation is composed of clastic and carbonate rocks that deposited in shallow sea shelf and shallow sea platform environment,the source rocks of which are 200-700m thick.Organic carbon contents:limestone is 0.56%,mud-stone 0.99%;chloroform extract "A":the limestone is 32 ppm,the mudstone 92.8 ppm.The organic matter is mainly humic type and the ratio of vitrinite reflectance 1.99%-2.74%.The Upper Permian Timulik Formation is mainly clastic rocks of river and lacustrine facies,the source rocks of which is 80-100m thick.Organic carbon contents:mudstone-shale is 1.38%,limestone 0.65%;chloroform extract"A":mudstone-shale is 358 ppm,limestone 91 ppm.The organic matter is generally humic type and the ratio of vitrinite reflectance 0.75%.Light oil and bitumen showings have been found in two for-mations.The above mentioned two sets of source rocks occurred in Qapqal and K黱es Sags with extensive distrioution and great thickness.Besides,they have fine source-reservoir-cap rock assemblages and various trap types,thus the two sags are most potential in hy-drocarbon exploration.