公开(公告)号：US08682587B2

公开(公告)日：2014-03-25

申请号：US11793587

申请日：2005-12-21

Applicant: Julian Singer ,  Jonathan Howard Saunders ,  Christopher Pain

Inventor： Julian Singer ,  Jonathan Howard Saunders ,  Christopher Pain

IPC: G01V1/40 ,  G01V3/18 ,  G01V3/00 ,  G01V9/00 ,  E21B47/00

CPC classification number: G01V1/50 ,  G01V11/007

Abstract: A method and apparatus for determining the fluid permeability of an earth formation is described. An instrument comprising an acoustic source and acoustic and electrokinetic sensors is located in a borehole at a site of interest. The acoustic source is fired and the resulting variations in pressure and electric field generated are measured and recorded. The Biot equation, and an equation for the streaming potential coupled to fluid displacement terms, is solved using finite element analysis to give an expected pressure waveform and electrokinetic waveform based on estimated earth formation properties. By comparison of the measured waveforms and those calculated from the equations, the actual permeability of the earth formation can be deduced.

Abstract translation: 描述了一种用于确定地层的流体渗透性的方法和装置。 包括声源和声和电动传感器的仪器位于感兴趣的位置的钻孔中。 声源被点燃，测量并记录所产生的压力和电场的变化。 Biot方程以及耦合流体位移项的流动电位的方程式使用有限元分析求解，以根据估计的地层形成特性给出预期的压力波形和电动波形。 通过比较测量波形和从方程计算出的波形，可以推导出地层的实际磁导率。

公开(公告)号：US20080306692A1

公开(公告)日：2008-12-11

申请号：US11793587

申请日：2005-12-21

Applicant: Julian Singer ,  Jonathan Howard Saunders ,  Christopher Pain

Inventor： Julian Singer ,  Jonathan Howard Saunders ,  Christopher Pain

IPC: G01V1/50

CPC classification number: G01V1/50 ,  G01V11/007

Abstract: A method and apparatus for determining the fluid permeability of an earth formation is described. An instrument comprising an acoustic source and acoustic and electrokinetic sensors is located in a borehole at a site of interest. The acoustic source is fired and the resulting variations in pressure and electric field generated are measured and recorded. The Biot equation, and an equation for the streaming potential coupled to fluid displacement terms, is solved using finite element analysis to give an expected pressure waveform and electrokinetic waveform based on estimated earth formation properties. By comparison of the measured waveforms and those calculated from the equations, the actual permeability of the earth formation can be deduced.

Abstract translation: 描述了一种用于确定地层的流体渗透性的方法和装置。 包括声源和声和电动传感器的仪器位于感兴趣的位置的钻孔中。 声源被点燃，测量并记录所产生的压力和电场的变化。 Biot方程以及耦合流体位移项的流动电位的方程式使用有限元分析求解，以根据估计的地层形成特性给出预期的压力波形和电动波形。 通过比较测量波形和从方程计算出的波形，可以推导出地层的实际磁导率。