CAJ | 학술논문

对于超深井储层而言,地层破裂压力异常高往往制约着储层改造的成功实施.YQ8井就是由于地层破裂压力过高导致地面泵压超限不得不终止施工.结合YQ8井酸压施工情况,分析认为造成该井地层破裂压力异常高的主要原因可能有:储层物性差、岩性异常致密、区域构造应力强、储层伤害严重等.
대우초심정저층이언,지층파렬압력이상고왕왕제약착저층개조적성공실시.YQ8정취시유우지층파렬압력과고도치지면빙압초한불득불종지시공.결합YQ8정산압시공정황,분석인위조성해정지층파렬압력이상고적주요원인가능유:저층물성차、암성이상치밀、구역구조응력강、저층상해엄중등.
As to ultra deep well reservoir, abnormal high fracture pressure always restrains implementation of reservoir stimulation;it leads to too high a ground pump pressure and Q8well has to terminate its acid fracturing implementation. Based on acid fracturing data of YQ8well, this paper concludes that the main possible reasons for abnormal high fracture pressure are as follows:bad physical property and abnormal tight lithology, strong regional tectonic stress, grave damage and so on.