公开(公告)号：US20150267527A1

公开(公告)日：2015-09-24

申请号：US14221681

申请日：2014-03-21

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Ha Dinh Nguyen

IPC: E21B47/06

CPC classification number: E21B47/06 ,  G01V3/20

Abstract: The invention relates to a method for estimating pore pressure in subterranean shale formations such as gas- or organic-rich shale where pore pressure predictions based on either a resistivity log or a porosity-indicative log such as sonic tend to be inaccurate. The method involves combining the resistivity log with the porosity-indicative log using a Eaton formula to give an estimate of pore pressure which is accurate both for conventional water wet shale and for organic-rich shale.

Abstract translation: 本发明涉及一种用于估计地下页岩层中孔隙压力的方法，例如富含气相或富含有机质的页岩，其中基于电阻率测井或孔隙率指示对数例如声波的孔隙压力预测趋于不准确。 该方法包括使用伊顿公式将电阻率测井与孔隙率指示对数组合，以给出孔隙压力的估计，其对于常规水湿页岩和对于富含有机物的页岩而言都是准确的。

公开(公告)号：US10385678B2

公开(公告)日：2019-08-20

申请号：US14221681

申请日：2014-03-21

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Ha Dinh Nguyen

IPC: G01V3/20 ,  E21B47/06

Abstract: The invention relates to a method for estimating pore pressure in subterranean shale formations such as gas- or organic-rich shale where pore pressure predictions based on either a resistivity log or a porosity-indicative log such as sonic tend to be inaccurate. The method involves combining the resistivity log with the porosity-indicative log using a Eaton formula to give an estimate of pore pressure which is accurate both for conventional water wet shale and for organic-rich shale.