【摘要】 滨海地区位于歧口生油凹陷中心附近,目前发现的多套含油气层系压力分布存在异常,东营组和沙一段压力系统变化最为复杂.本文在部分实测压力数据基础上,利用测井资料等效深度法和地震资料PCD法对滨海地区地层压力进行预测.结果表明,研究区东营组-沙一段压力系数为1~1.6,南部高压异常较北部大.认为滨海地区沙一段、东营组压力异常主控因素以快速沉降作用为主,构造作用、生烃作用和成岩作用为辅.更多还原

【Abstract】 Binhai district nearby Qikou source sag,which have found several oil-bearing formation,have found pressure abnormity both in plane and cross-section,especially in dongying & sha1 under-sub interval formation.On the base of some actual measured pressure data,we use equivalent depth & PCD methods to predict the formation pressure distribution.We find that the coefficient of dongying & sha1 vary from 1 to 1.6,and it is much overpressure in south than in north.Particularly analysis results that the control factor is the fast sedimentation during dongying & sha1 period,tectonic action hydrocarbon generation & diagenesis together play important help role.更多还原