微地震裂缝监测技术原理在龙12区块的应用

Principle of microseismic fracture monitoring and its application in block 12

微地震裂缝监测技术是一种新型的地球物理探测技术。在水力压裂过程中,压裂液对油层进行改造,行成裂缝,裂缝的延伸产生弹性波并向外传播,产生微地震波场。检波器通过接受波场信号,将机械波转成电磁波,进行时差声波处理,通过计算得到震源的位置,进而推算出裂缝的方位,长度,烈性,地应力方位等等重要参数,评价水力压裂效果,并为一步地质方案的确定提供依据。

Microseismic monitoring technique is a new geophysical exploration technique.During the hydraulic fracturing,the fracturing fluid transforms the oil reservoir into a fracture,and the extension of the fracture generates elastic wave and propagates outwards,resulting in a micro seismic wave field.By receiving the signal detector wave field,the mechanical waves into electromagnetic waves,the time difference of acoustic processing,obtain the source location by calculating,and then calculate the fracture azimuth,length,strong,important parameters of stress range and so on,to evaluate the effect of hydraulic fracturing,and provides a basis for determining the future geological scheme.