地学前缘 ›› 2012, Vol. 19 ›› Issue (5): 332-338.

• 论文 • 上一篇    下一篇

页岩气地质综合评价和目标优选

李玉喜,张金川，姜生玲，韩双彪   

  1. 1. 国土资源部 油气资源战略研究中心, 北京 100034
    2. 中国地质大学（北京） 能源学院, 北京 100083
  • 收稿日期:2012-04-25 修回日期:2012-09-04 出版日期:2012-09-10 发布日期:2012-09-10
  • 作者简介:李玉喜（1962—），男，博士，研究员，主要从事页岩气资源调查评价与有利区优选研究。 E-mail:liiyuxi@163.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专项“全国页岩气资源潜力调查评价及有利区优选”（2009GYXQ15）

Geologic evaluation and targets optimization of shale gas.

  1. 1. Strategic Research Center of Oil and Gas Resources, Ministry of Land and Resources, Beijing 100034, China
    2. School of Energy Resources, China University of Geosciences (Beijing), Beijing 100083, China
  • Received:2012-04-25 Revised:2012-09-04 Online:2012-09-10 Published:2012-09-10

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摘要：

页岩气为烃源岩层系的油气聚集，属于源岩滞留气，以游离和吸附状态为主存在。中国页岩气资源调查和勘探开发刚刚起步，工作基础差别较大。在含油气盆地，由于有以往油气勘探开发资料，对含气页岩发育层系、有机质热演化程度、气显示等基本资料，具有一定的工作基础；在含油气盆地外以及油气勘探程度很低的沉积区，以上基础资料缺乏，仅有地表和部分固体矿产探井资料可供参照，工作基础薄弱。在不同工作基础的地区，页岩气地质综合评价所处阶段不同，主要评价指标也不同；随着工作程度的提高，资料的不断丰富，评价指标也逐步增加。页岩气地质评价以区域地质演化分析为基础，主要涉及以下几方面内容：（1）含气页岩评价。主要研究划定含气页岩层段，页岩的TOC、Ro、岩石和矿物成分，页岩分布、厚度、埋深、纵向和横向变化规律等，优选页岩气富集远景区。（2）页岩含气性和资源潜力评价。主要研究页岩的含气量、吸附能力、储集空间类型、储层物性、储层裂缝及其变化规律，预测页岩气资源潜力等。（3）页岩气开发条件和开发经济性评价。研究储层温度、流体压力、流体饱和度及流体性质，研究页岩的敏感性，页岩的岩石力学参数、区域现今应力场特征，地表条件和开发保障条件，通过试验井产量数据分析开发经济条件。综合各方面因素，优选有利开发区。

关键词: 含气页岩, 页岩气, 评价参数, 资源评价, 地质评价, 有利区优选

Abstract:

Shale gas and shale oil are petroleum generated and accumulated in source rocks. They are remained oil and gas in source rocks. The gas remained in source rocks mainly adsorbed by organics or free in pore. Shale gas survey, exploration and development have just started in China. In oil and gas basins, we can find oil and gas exploration and development data to help us to get the data such as TOC, Ro, thickness, distribution, oil and gas showings of source rocks etc. In the basins that have not found conventional oil and gas, we lack  the basic data needed for evaluating the shale gas. The availability of basic data in different basins needed for evaluating shale gas and shale oil is different, so the starting point and indexes used for shale gas(oil) geological evaluation are different: (1) gas shale evaluationmainly use the TOC, Ro, mineral composition, shale distribution, thickness, burial depth, heterogeneity, etc.; (2) gas content evaluation and shale gas resources assessmentmainly use the gas content, adsorption ability, the types of reservoir space and reservoir physical properties, fractures and resource potentials, etc.; (3) shale gas development and economics evaluationmainly use the reservoir temperature, fluid pressure, fluid saturation, fluid properties, reservoir sensitivity, rock mechanics parameters and regional stress field, geomorphology, infrastructure, etc. Economic evaluation is based on test well.

Key words: shale gas, evaluation parameters, resources evaluation, geologic evaluation, favorable exploration areas

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