石油学报 ›› 2010, Vol. 31 ›› Issue (1): 18-24.DOI: 10.7623/syxb201001003

• 地质勘探 • 上一篇    下一篇

川东石炭系大型岩性地层气藏形成条件与勘探方向

邹才能 1 徐春春 2 李 伟 1 张志杰 1 沈 平 2 党录瑞 2 杨金利 2   

  1. 1 中国石油勘探开发研究院提高石油采收率国家重点实验室 北京 100083; 2 油西南油气田分公司 川成都 10051
  • 收稿日期:2009-11-12 修回日期:2009-12-12 出版日期:2010-01-25 发布日期:2010-05-21
  • 通讯作者: 邹才能

The formation conditions and exploration targets of large Carboniferous lithologic and stratigraphic gas pools in the eastern Sichuan Basin

ZOU Caineng 1 XU Chunchun 2 LI Wei 1 ZHANG Zhijie 1 SHEN Ping 2 DANG Lurui 2 YANG Jinli 2   

  • Received:2009-11-12 Revised:2009-12-12 Online:2010-01-25 Published:2010-05-21
  • Contact: ZOU Caineng

摘要:

四川盆地东部石炭系经过30多年以构造圈闭为目的的天然气勘探与开发,已经成为了四川盆地重要的产气层系。近来以岩性地层气藏为目标进行了新一轮的地层、沉积微相、储层、烃源岩、构造、成藏与圈闭等方面的研究,结果表明川东石炭系发育构造与岩性地层两类目标。石炭系内幕因粒屑滩微相控制与埋藏白云化不均一影响,储层具有不连续性,存在岩性圈闭;石炭系大范围尖灭与大面积残留,在尖灭带与残留区发育大型地层圈闭。川东石炭系具备岩性地层气藏形成条件,目前发现4个有利区带和12个有利目标,展示其具有较大的勘探潜力。

关键词: 四川盆地, 系, 滩, 非均质性, 尖灭带, 地层气藏

Abstract:

The Carboniferous reservoir has become the main gas producing formation in Sichuan Basin through more than 30 years of exploration and development. Recently, the new round study on stratigraphy, sedimentary facies, reservoir, source rock, structure, accumulation and trap in the eastern Sichuan Basin indicated that there are two kinds of exploration targets. One is lithologic trap, which is under the control of grain-clastic bank and heterogeneous burial dolomization in inner Carboniferous, and it shows the characteristics of heterogeneous reservoir. The other is large stratigraphic trap, which can be formed in Carboniferous wedge out area. So the Carboniferous reservoir in the Sichuan Basin has the formation condition of lithologic and stratigraphic gas pools,and 4 favorable regions and 12 prospective targets have been found, which reveals the great exploration potential.

Key words: Sichuan Basin, Carboniferous, grain-clastic bank, reservoir heterogeneity, wedge out area, lithologic and stratigraphic gas pool