摘要
为了提高适用于低渗煤层气高能气体压裂开发的技术水平,结合全封闭多脉冲压裂工艺特点,分析了多脉冲加载激励煤层产生多裂缝松弛地应力的作用机理及p-T作用过程,研究建立其多裂缝物理模型。该模型为低渗煤层全封闭多脉冲压裂瞬间破岩成缝机理研究及优化工艺设计提供了理论参考。
In order to improve the technology level of high energy gas fracturing development that applied to low permeability coalbed metha, combined with the characteristics of complete closed multi- pulse fracturing technics, the multiple pulse load that drives coal to produce cracks relaxation function mechanism of in-situ stress of coal seam and p-T process has been analysed. Research has established the multiple pulse fracturing low permeability coal fracture physical model of incentive. And combined with the model length calculation, the technological design method has been analysed. And a theoretical guidance for CBM multi-pulse fracturing breaking rock into the seam mechanism research and technics design optimization method can be provided.
出处
《煤炭技术》
CAS
北大核心
2016年第1期1-4,共4页
Coal Technology
基金
国家自然科学基金项目(51274164)
中国石油天然气集团公司科学研究与技术开发项目(2015D-5008-34)
关键词
低渗煤层气
多脉冲压裂
多裂缝模型
low permeability of coal bed methane
multi-pulse fracturing
multiple crack model