Integrated test system for interfacial strength and morphology of multi-type hydrate-bearing sediments.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-09-01 DOI:10.1063/5.0212247

Yajuan Zhang, Yanlong Li, Nengyou Wu, Lilin Li, Yunkai Ji, Lin Dong, Zhiwen Sun, Ke Ke

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引用次数: 0

Abstract

Predicting the strength parameters of multi-type sediments containing hydrates is the basis and precondition for the safe and efficient development of natural gas hydrates. However, studies on the shear mechanical behavior and morphology of multi-type hydrate-bearing sediments (HBS) are still insufficient. Herein, this study presents an integrated test system that can be used to measure the interfacial strength and morphology of multi-type sediments containing hydrates. This device integrates specimen preparation, shear test, morphology observation, and data analysis, which is helpful to comprehensively evaluate interfacial strength, roughness, and morphology. The propagation and development characteristics of microfractures of HBS during shearing can be obtained, which is favorable for identifying the damage and failure modes. Preliminary validation experiments have been conducted on massive pure hydrate, hydrate-sediment interface, and homogenous HBS to verify the applicability of the device for multi-type HBS. The device and corresponding analysis method are expected to support the evaluation of interfacial strength and morphology, thereby promoting a deeper understanding of hydrate-sediment interactions and failure mechanisms of hydrate reservoirs.

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多类型含水沉积物界面强度和形态综合测试系统。

预测含水合物多类型沉积物的强度参数是安全高效开发天然气水合物的基础和前提。然而，目前对多类型含水合物沉积物（HBS）的剪切力学行为和形态的研究仍然不足。在此，本研究提出了一种综合测试系统，可用于测量含水合物的多类型沉积物的界面强度和形态。该装置集试样制备、剪切试验、形态观察和数据分析于一体，有助于全面评估界面强度、粗糙度和形态。可以获得 HBS 在剪切过程中微裂纹的扩展和发展特征，有利于确定损伤和破坏模式。为了验证该装置对多类型 HBS 的适用性，我们在块状纯水合物、水合物-沉积物界面和均质 HBS 上进行了初步验证实验。该装置和相应的分析方法有望为界面强度和形态评估提供支持，从而促进对水合物-沉积物相互作用和水合物储层破坏机理的深入了解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.