石油学报 ›› 1997, Vol. 18 ›› Issue (2): 8-12.DOI: 10.7623/syxb199702002

• 地质勘探 • 上一篇    下一篇

吐哈盆地煤系地层中烃类的独特运聚风格初探

李伟, 赵文智, 牛嘉玉, 张龙海   

  1. 石油勘探开发科学研究院 北京
  • 收稿日期:1996-03-25 修回日期:1996-06-10 出版日期:1997-04-25 发布日期:2013-07-08
  • 作者简介:李伟.1987年毕业于江汉石油学院地质系.现为石油勘探开发科学研究院地质所工程师.通讯处:北京市910信箱.邮政编码:100083.

A STUDY ON HYDROCARBON MIGRATION AND ACCUMULATION IN COAL MEASURES OF TURPAN HAMI BASIN

Li Wei Zhao, Wenzhi Niu, Jiayu Zhang, Longhai   

  1. Scientific Research Institute of Petroleum Exploration and Development, Beijing
  • Received:1996-03-25 Revised:1996-06-10 Online:1997-04-25 Published:2013-07-08

摘要: 通过对吐哈盆地煤成烃热成熟度特征与煤源岩成熟度的热演化特征对比分析,并结合煤岩各阶段吸附性强弱,论证了煤成烃的早易排而晚难排特征,提出了不同岩性组合下的煤岩排烃特点.经过石油地质的综合分析,论证了煤系地层油气运移距离短,并以垂向为主的特征.经过煤岩压力孕育史、构造运动强弱的分析,以及地层超压分布与油气藏形成时空关系的讨论,认为压力机制在煤系地层油气藏形成过程中起主导作用,泥岩超压封闭层的存在是煤系地层中油气藏形成的重要条件.

关键词: 煤系, 压力, 油气运移, 油气聚集, 吐哈盆地

Abstract: Based on the comparative study of coal related hydrocarbon maturity and source rocks maturity of coal measures in Turpan Hami basin,and combination with adsorbed hydrocarbon power of coalrock in different degree of coalification,the characteristics of hydrocarbon exhaust are discussed and the different charateristics of hydrocarbon exhaust of source rocks of coal measures in different rock associations are pointed out.It is confirmed that hydrocarbon migration distance is short,the vertical hydrocarbon migration is dominant.By studing overpressure evolution,tectogenesis intensity,interrelation of overpressure argillutite and time spasce oil gas pools living,pressure effect plays a leading role in the process of oil and gas accumulation,and an existance of overpressure argillutite is impotant condition of oil/ags accumulation in coal measures.

Key words: coal-measures, pressure, oil and gas migration, oil and gas accumulation, Turpan-Hami basin