地球物理技术在煤层气储层多面表征中的应用途径与挑战

IF 7.2 1区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY
Zheng Zhao , Dameng Liu , Yidong Cai , Fengrui Sun , Yingfang Zhou
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引用次数: 0

摘要

揭示煤储层参数分布规律是评价煤层气资源潜力和指导煤层气生产活动的重要依据。虽然样品测试、煤岩心观察和试井测量等直接方法是有效的,但它们耗时、成本高,并且受采样位置和数据量的限制。因此,仅基于这些方法的区域尺度储层表征精度往往是不够的。因此,基于地球物理技术的预测方法已经发展起来,通过建立储层参数和地球物理数据之间的相关性,使用直接测量作为标签。这些方法在效率和成本效益方面具有显著优势,在煤层气领域具有很高的应用前景和实际价值。本研究对这些进展进行了评述。首先,系统地介绍了地震和地球物理测井的基本原理,以及数据的预处理和分析方法。其次,基于不同地球物理数据集对不同储层参数的响应机制差异,重点介绍了这些技术在煤性、煤结构、渗透率和流体特征评价方面的应用进展。这些进步为降低勘探成本和提高开发效率做出了重大贡献。然而,煤储层的高度复杂性和非均质性削弱了地球物理数据与单个储层参数之间的相关性,现有预测模型的通用性仍然有限。为了克服这些挑战,本文提出了煤层气研究中地球物理技术未来发展的几个重点方向,包括:(1)开发将地质约束与算法预测相结合的储层评价模型;(2)地球物理理论的进步和模型推广能力的提高;(3)建立以煤系储层参数空间分布特征为重点的模型;(4)构建地质、储层、开发相结合的煤层气综合评价体系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Pathways and challenges of the application of geophysical techniques to multifaceted coalbed methane reservoir characterization

Pathways and challenges of the application of geophysical techniques to multifaceted coalbed methane reservoir characterization
Revealing the distribution patterns of coal reservoir parameters is essential for evaluating the resource potential and guiding the production activities of coalbed methane (CBM). Although direct methods such as sample testing, coal core observation, and well testing measurement are effective, they are time-consuming, costly, and limited by the sampling locations and data volume. Consequently, the precision of regional-scale reservoir characterization based solely on these methods is often insufficient. Therefore, predictive methods based on geophysical technologies have been developed by establishing correlations between reservoir parameters and geophysical data, using direct measurements as labels. These methods offer significant advantages in terms of efficiency and cost-effectiveness, making them highly promising and practically valuable in the CBM field. This study presents a critical review of these advancements. First, the fundamental principles of seismic and geophysical logging are systematically introduced, along with methods for data preprocessing and analysis. Second, based on the differences in response mechanisms of various geophysical datasets to different reservoir parameters, the application advances of these techniques in assessing coal properties, coal structures, permeability, and fluid characteristics are emphasized. These advancements have contributed significantly to reducing exploration costs and improving development efficiency. However, the highly complex and heterogeneous nature of coal reservoirs weakens the correlation between geophysical data and individual reservoir parameters, and the generalizability of existing predictive models remains limited. To overcome these challenges, this paper proposes several key directions for the future development of geophysical technologies in CBM research, including: (1) the development of reservoir evaluation models that integrate geological constraints with algorithmic prediction; (2) the advancement of geophysical theory and the improvement of model generalizability; (3) the establishment of models focused on the spatial distribution characteristics of coal measure reservoir parameters; and (4) the construction of a comprehensive evaluation system that integrates geology, reservoir, and development for CBM.
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来源期刊
Gondwana Research
Gondwana Research 地学-地球科学综合
CiteScore
12.90
自引率
6.60%
发文量
298
审稿时长
65 days
期刊介绍: Gondwana Research (GR) is an International Journal aimed to promote high quality research publications on all topics related to solid Earth, particularly with reference to the origin and evolution of continents, continental assemblies and their resources. GR is an "all earth science" journal with no restrictions on geological time, terrane or theme and covers a wide spectrum of topics in geosciences such as geology, geomorphology, palaeontology, structure, petrology, geochemistry, stable isotopes, geochronology, economic geology, exploration geology, engineering geology, geophysics, and environmental geology among other themes, and provides an appropriate forum to integrate studies from different disciplines and different terrains. In addition to regular articles and thematic issues, the journal invites high profile state-of-the-art reviews on thrust area topics for its column, ''GR FOCUS''. Focus articles include short biographies and photographs of the authors. Short articles (within ten printed pages) for rapid publication reporting important discoveries or innovative models of global interest will be considered under the category ''GR LETTERS''.
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