异常高压地层是指压力系数大于1.2的地层。文中研究了异常高压能否压裂地层的问题,结果发现,由于孔隙之间压力的压制作用,仅靠内压的增大不能在地层中产生裂缝,地层中的裂缝都是由于外压的改变导致的。异常高压地层的岩石通常十分致密,岩石压缩系数不可能像人们通常认为的那样很高,而是很低。 Abnormally high pressure formations refer to formations with a pressure coefficient greater than 1.2. In this paper, the problem of whether fractures can be fractured by abnormally high pressures is studied. The results show that fractures in the stratum are caused by the change of external pressure only due to the increase of internal pressure due to the pressure suppression of the pores. Cause Rocks in abnormally high-pressure formations are usually very dense and rock compressibility can not be as high as one would normally think, but rather low.