新疆石油地质

新疆石油地质 ›› 2011, Vol. 32 ›› Issue (4): 351-352.

• 油气勘探 • 上一篇    下一篇

页岩气储集层的地球物理特征及识别方法

李曙光1,2, 程冰洁3, 徐天吉1,2   

  1. 1.中国石化西南油气分公司勘探开发研究院德阳分院,四川德阳 618000;
    2.中国石化多波地震重点实验室,四川德阳 618000;
    3.成都理工大学地球物理学院,成都 610059
  • 收稿日期:2010-11-30 出版日期:2011-08-01 发布日期:2020-08-19
  • 作者简介:李曙光（1983-）,男,湖南望城人,工程师,硕士,地球物理勘探,（Tel）15884299502（E-mail）lishuguang1983@gmail.com.
  • 基金资助:
    中石化科技项目（P08006）

Geophysical Characteristics of Shale Gas Reservoir and Its Identification Method

LI Shu-guang1,2, CHENG Bing-jie3, XU Tian-ji1,2   

  1. 1. Deyang Branch, Research Institute of Exploration and Development, Southwest Oil-Gas Company, Sinopec, Deyang, Sichuan 618000, China;
    2. Key Laboratory of Multi-Wave Seismic Technology, Deyang, Sichuan 618000, China;
    3. College of Geophysics, Chengdu University of Technology, Chengdu, Sichuan 610059, China
  • Received:2010-11-30 Online:2011-08-01 Published:2020-08-19

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摘要： 页岩气储集层具有高自然伽马、低声波速度、低密度、高电阻率等地球物理特性,这些特性都可以作为页岩气储集层识别的依据。但由于其有效孔隙度较低,成藏主要受控于裂缝发育程度,页岩气的地球物理勘探主要是通过检测页岩裂缝的发育程度及方向来确定页岩储集层的有利发育区带。讨论了利用因岩性各向异性而产生的地震波的各向异性、快慢横波分裂、曲率相干属性、频变AVO 等几种裂缝检测识别页岩气储集层的方法,为页岩气的地球物理勘探提供了思路。

关键词: 页岩气, 地球物理特征, 储集层, 识别, 裂缝

Abstract: Shale gas is the focal point of the new energy strategy in China. China’s shale gas exploration and development are just starting, and little research on such a reservoir’s geophysical features and prospecting methods is available. The shale gas reservoir is normally of features of high gamma ray, low sonic velocity, low density and high resistivity, etc., by which the reservoir can be identified. However, because of its low porosity, and gas accumulation is mainly controlled by the degree of fractures, the geophysical prospecting of shale gas is based on detecting the development level and direction of shale fractures to determine the favorable zones of shale reservoirs. This article presents the fracture-detecting and identifying methods, such as anisotropy, shear wave splitting, curvature and coherent attribute, frequencydependent AVO, etc., so that they can be as guidelines for geophysical prospecting of shale gas.

Key words: shale gas, geophysics, reservoir, identification, fracture

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