摘要
本文通过对常规煤岩裂缝扩展监测方法优缺点进行分析,从煤岩无损化角度出发,提出了应用CT扫描技术对煤岩裂缝扩展进行分析的新方法。试验结果表明:天然裂缝和割理等弱面对水力裂缝扩展有重要影响;水力裂缝在穿透弱面扩展过程时压力曲线存在明显的憋压,产生沿割理方向的水平缝,沟通割理过程中压力曲线上下波动明显。
Based on the analysis of the advantages and disadvantages of conventional detection methods for coal fracture propagation to, the paper proposes a new method of applying CT scanning technology for the analysis of coal fracture propagation from the point of view of non-destructive coal. The test results show that the weak sides such as cleats and natural fractures have an important influence on hydraulic fracture extension. When hydraulic fractures penetrate the weak side, hold pressure appears obviously in the pressure curve, generating horizontal fractures along the direction of the cleats, and the pressure curve fluctuates significantly during the communication of cleats.
作者
吴刚飞
王孝超
车航
徐庆丰
李玉涛
张丽娜
WU Gangfei WANG Xiaochao CHE Hang XU Qingfeng LI Yutao ZHANG Lina(Petroleum Production Engineering Research Institute, Petro China Huabei Oilfield Company, Hebei 062552 CNPC Bohai Drilling Engineering Co. Ltd, Hebei 062552)
出处
《中国煤层气》
2016年第6期35-37,共3页
China Coalbed Methane
关键词
煤岩
裂缝扩展
CT扫描分析
Coal
fracture propagation
CT scanning technology
