Acta Petrolei Sinica ›› 2024, Vol. 45 ›› Issue (2): 461-476.DOI: 10.7623/syxb202402010

• REVIEW • Previous Articles     Next Articles

Research progress of hydrogen sulfide genesis in shale gas reservoirs

Li Le1,2, Hu Yuanqing1, Peng Xiaogui1, Wang Wei1,2, Yu Haoyu1,2, Cui Yasheng1,2   

  1. 1. Hubei Institute of Geosciences, Hubei Wuhan 430034, China;
    2. Hubei Key Laboratory of Resources and Eco-Environment Geology, Hubei Wuhan 430034, China
  • Received:2023-01-11 Revised:2023-11-05 Online:2024-02-25 Published:2024-03-07

页岩气藏中硫化氢成因研究进展

李乐1,2, 胡远清1, 彭小桂1, 王伟1,2, 余浩宇1,2, 崔亚圣1,2   

  1. 1. 湖北省地质科学研究院 湖北武汉 430034;
    2. 资源与生态环境地质湖北省重点实验室 湖北武汉 430034
  • 通讯作者: 崔亚圣,男,1994年1月生,2018年获中国石油大学(北京)硕士学位,现为湖北省地质科学研究院助理工程师,主要从事石油与天然气地质相关研究。Email:yashengcui@163.com
  • 作者简介:李 乐,男,1985年8月生,2015年获中国地质大学(武汉)博士学位,现为湖北省地质科学研究院副研究员,主要从事非常规油气地质相关研究。Email:santali2005@gmail.com
  • 基金资助:
    湖北省自然科学基金项目(2022CFB490)和湖北省地质局科技项目(KJ2023-4)资助。

Abstract: It is traditionally considered that shale gas reservoirs do not contain or contain little hydrogen sulfide (H2S). However, low to extra-high content of H2S has been detected in 9 shale gas reservoirs in the ten years of exploration and development practice, and high to extra-high content of H2S are often found in calcareous shale gas reservoirs. According to the sequential order of H2S formation time, "natural geological process" and "anthropogenic cause" are regarded as two major causes for the occurrence of H2S in shale play. The former focuses on demonstrating the residue or migration of primary H2S in gas reservoirs as a result of the natural geological processes, while the latter emphasizes that the introduction of microorganisms and chemical substances by field operations (such as drilling, hydraulic fracturing) can result in the formation and emergence of secondary H2S after multiple processes under the complex downhole conditions. The proposal of "anthropogenic cause" has shed new light on the occurrence of H2S in shale gas reservoirs, but has not received much attention till now. Meanwhile, the mutually exclusive and complementary relationships between "natural geological process" and "anthropogenic cause" have not yet been clarified. Furthermore, the research of evaluating the primary supply capacity of H2S in shale gas reservoirs shall be carried out in the future. Meanwhile, it is required to deeply explore and establish the genesis identification criteria and output prediction system of epigenetic H2S based on field production data, so as to deepen the understanding of the genetic mechanism of H2S in shale gas reservoirs, thus providing a theoretical support for subsequent exploration and development of shale gas.

Key words: hydrogen sulfide, shale gas reservoir, natural geological process, anthropogenic cause, microorganism, chemical substances, primary supply capacity

摘要: 传统观点认为页岩气藏中不含硫化氢或含有微量的硫化氢,然而在近10年的勘探开发实践中,已有9个页岩气藏发现了低—特高含量硫化氢,其中,高—特高含量的硫化氢多出现于钙质页岩气藏中。根据硫化氢形成时间的先后顺序,通常将"地质天然"和"施工人造"视为硫化氢出现在页岩区带中的两大主因,前者侧重于论证地质历史中天然地质作用所生成的原生硫化氢在气藏内的残留或运移过程;后者强调施工作业(钻井、水力压裂)过程中带入的微生物和化学物质在复杂井底环境中发生多类别作用后形成的后生硫化氢在气藏中的新生出现。"施工人造"因素的提出为解读页岩气藏中出现的硫化氢提供了新的思路,但目前尚未得到普遍关注;同时,其与"地质天然"因素间的互斥或互补的关联尚未梳理清晰。未来的工作应进一步开展页岩气藏中硫化氢的原生供给能力评价研究,同时应基于现场生产数据深入发掘及建立系统的后生硫化氢成因判别标志和产出预测,以深化认识页岩气藏中硫化氢的成因机制,为后续的页岩气勘探开发提供理论支撑。

关键词: 硫化氢, 页岩气藏, 天然地质作用, 施工人造, 微生物, 化学物质, 原生供给能力

CLC Number: