吉林大学学报(地球科学版) ›› 2016, Vol. 46 ›› Issue (2): 358-367.doi: 10.13278/j.cnki.jjuese.201602105

• 地质与资源 • 上一篇    下一篇

鄂尔多斯盆地南部延长组长9段页岩气资源潜力评价

杜治利1,2, 田亚2, 刘洪军3, 王凤琴3, 杜小弟2, 袁远2, 仝立华2   

  1. 1. 中国石油大学(北京)地球科学学院, 北京 102249;
    2. 中国地质调查局油气资源调查中心, 北京 100029;
    3. 西安石油大学地球科学与工程学院, 西安 710065
  • 收稿日期:2015-08-09 发布日期:2016-03-26
  • 作者简介:杜治利(1979-),男,高级工程师,博士,主要从事油气资源选区研究工作,E-mail:du.zhili@qq.com
  • 基金资助:

    国土资源部全国油气资源战略选区调查与评价项目(1211302108023)

Shale Gas Resource Potential Evaluation of Chang 9 Member, Fm. Yanchang in South Ordos Basin

Du Zhili1,2, Tian Ya2, Liu Hongjun3, Wang Fengqin3, Du Xiaodi2, Yuan Yuan2, Tong Lihua2   

  1. 1. College of Geosciences, China University of Petroleum, Beijing 102249, China;
    2. Oil & Gas Survey, China Geological Survey, Beijing 100029, China;
    3. College of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an 710065, China
  • Received:2015-08-09 Published:2016-03-26
  • Supported by:

    Support by the Project of National Oil and Gas Resources Survey and Strategic Selections,Ministry of Land and Resources (1211302108023)

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摘要：

鄂尔多斯盆地南部延长组长9段为长7段之外另一套富含页岩气层段,然而其资源潜力长期未被重视。通过黄探1井的钻探在长9段发现了高含气量的页岩层段,初步证实了其资源潜力。本文利用黄探1井钻探成果并结合大量邻区钻井资料,对鄂尔多斯盆地南部长9段泥页岩发育特点、有机质丰度、有机质类型、热演化成熟度、岩矿特征、储层物性及含气性等方面开展研究,对其页岩气资源潜力进行了评价。总体认为:长9段沉积时期半深湖-深湖相发育,为油页岩形成提供了良好的沉积条件;长9段总有机碳(TOC)平均质量分数3.98%,有机质丰度高,以偏腐殖Ⅱ2型混合有机质为主,处于高成熟演化阶段;页岩储层孔隙度与渗透率均较低,成岩矿物以石英和长石体积分数较高。鄂尔多斯盆地东南部延长组长9段页岩气平均含气量高达2.92 m3/t,是鄂尔多斯盆地下一步页岩气勘探开发的有利方向。

关键词: 页岩气, 资源潜力, 延长组, 长9段, 鄂尔多斯盆地南部

Abstract:

Besides Chang 7 Member, Chang 9 Member is the other important shale gas horizon however its resource potential is unknown. The shale layer with high gas content was found in Chang 9 Member of Well Huangtan-1, whose resource potential is preliminarily confirmed.Based on the drilling results of the well Huangtan-1, and combined with the data of adjacent wells, the development feature, organic matter abundance, organic type, thermal maturity, mineral and petrophysic characteristics, and gas content of shale, the shale gas potential of the study area is preliminarily analyzed. The deep and semi-deep lacustrine facies are deposited during Chang 9 Member deposition period. The total organic content (TOC) of Chang 9 Member is as high as 3.98%, with humic Ⅱ2 organic type, at the high-mature gas-prone stage. The mineral composition is mainly quartz and feldspar. The average gas content is 2.92 m3/t, which shows the great gas generation potential of Chang 9 Member in south Ordos basin.

Key words: shale gas, potential evaluation, Yanchang Formation, Chang 9 Member, south Ordos basin

中图分类号: 

  • P618.12

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