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基于多物理场的水泥环渗透率关键影响参数分析

Analysis of key parameters influencing the permeability of cement sheath based on multiphysical fields.

作者信息

Wei Luo, Zhang Weidong, Xu Kewei, Yang Jingwei, Liu Yangyang, Xiao Wei, Wei Mingji, Qian Liqin, Xia Chengyu

机构信息

Engineering Technology Research Institute, Petro China Southwest Oil and Gas Field Company, Chengdu, China.

Cooperative Innovation Center of Unconventional Oil and Gas, Yangtze University (Ministry of Education & Hubei Province), Wuhan, Hubei, China.

出版信息

PLoS One. 2025 Jan 16;20(1):e0315934. doi: 10.1371/journal.pone.0315934. eCollection 2025.

DOI:10.1371/journal.pone.0315934
PMID:39820168
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11737677/
Abstract

This paper develops a finite element analysis model to investigate the seepage characteristics of cement sheaths, considering the flow properties of their porous medium. The model's applicability under various conditions was evaluated through grid sensitivity tests and model validation, indicating that it effectively captures the seepage behavior of cement sheaths with a reasonable degree of reliability. Key parameters, including cement sheath length, permeability, gap structure, pressure differential, and fluid properties, were analyzed using finite element methods to determine their impact on seepage flow. The findings reveal that crack width, permeability, and cement sheath length significantly influence seepage flow in both liquid and gas media. These insights enhance the understanding and prediction of cement sheath seepage characteristics under diverse conditions.

摘要

本文建立了一个有限元分析模型，以研究水泥环的渗流特性，同时考虑其多孔介质的流动特性。通过网格敏感性测试和模型验证评估了该模型在各种条件下的适用性，结果表明它能够以合理的可靠程度有效地捕捉水泥环的渗流行为。使用有限元方法分析了包括水泥环长度、渗透率、间隙结构、压差和流体性质在内的关键参数，以确定它们对渗流的影响。研究结果表明，裂缝宽度、渗透率和水泥环长度对液体和气体介质中的渗流均有显著影响。这些见解增进了对不同条件下水泥环渗流特性的理解和预测。

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本文引用的文献

1
Focused ion beam-SEM 3D analysis of mineralized osteonal bone: lamellae and cement sheath structures.矿化骨单位骨的聚焦离子束扫描电子显微镜三维分析：板层和黏合线结构
Acta Biomater. 2021 Feb;121:497-513. doi: 10.1016/j.actbio.2020.11.002. Epub 2020 Nov 18.
2
Sealing Failure Mechanism and Control Method for Cement Sheath during Hydraulic Fracturing.水力压裂过程中水泥环密封失效机理及控制方法
ACS Omega. 2020 Aug 6;5(32):19978-19994. doi: 10.1021/acsomega.0c01326. eCollection 2020 Aug 18.