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爆生气体作用下孔壁岩石开裂的机理及影响因素研究
Authors
丁雁生
刘兆年
+3 more
张宝康
林英松
蒋金宝
Publication date
25 May 2008
Publisher
Abstract
开发低渗透油气田最有效的手段是改善低渗透储层物性,但目前常用的水力压裂、酸化和高能气体压裂等措施也各有其不足,因此对岩石具有应力波和爆生气体双重作用的"层内爆炸"方法应运而生。针对爆生气体作用下孔壁岩石的开裂问题,通过分析试验数据,建立了考虑试样惯性的力学模型,并从动力学角度对动态载荷作用下孔壁岩石产生多裂缝的机制做了数值模拟研究。试验及数值模拟结果表明,爆生气体动态载荷作用下孔壁岩石产生多裂缝的实质是试样对动态载荷的结构响应,孔壁岩石能否产生多裂缝主要取决于载荷、约束、结构和材料属性等因素的影响。此外还得到了不同加载速率和初始损伤条件下孔壁岩石开裂的一般规律
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 12/02/2018