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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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缝洞型储层井壁裂缝宽度变化ansys模拟研究
Keywords: 计算机模拟,缝洞型储层,孔洞,裂缝动态宽度,缝宽增量
Abstract:
？以往研究单一或成组裂缝的数值模拟，多未考虑孔洞存在对裂缝宽度变化的影响。用断裂力学基本理论及有限元法建立了不同缝洞组合裂缝宽度变化的有限元模型，通过ansys有限元软件模拟研究了缝洞型储层中不同缝洞组合：缝—洞、缝—洞—缝、缝—洞—缝—洞3种模型。探讨了不同模型中裂缝宽度变化、裂缝长度、井筒正压差及溶洞发育情况的关系。模拟结果表明，井筒正压差越大，裂缝宽度增量越大；相同井筒正压差下，裂缝长度越大，其缝宽增量越大；溶洞越发育，缝宽增量也越大；随着溶洞直径的逐渐增大，缝宽增量也越大。计算机模拟裂缝宽度变化规律为选取合理粒径的堵漏材料、优化漏失控制技术提供了一定的理论依据。
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