公开(公告)号：US08000899B2

公开(公告)日：2011-08-16

申请号：US11340054

申请日：2006-01-26

申请人： Christian Stoller ,  Françoise Allioli

发明人： Christian Stoller ,  Françoise Allioli

IPC分类号： G01V5/10

CPC分类号： G01V5/107 ,  G01V5/104

摘要： The invention concerns a method for determining the porosity of an earth formation penetrated by a borehole. The method comprises conveying a tool along said borehole, wherein the tool comprises a source of neutron radiation and at least two detectors axially spaced from said source at at least two different spacings. At least one near detector and at least one far detector are selected and a correction computed. The porosity of the earth formation is determined by correcting the far detector porosity with the computed correction.

摘要翻译： 本发明涉及一种确定钻孔渗透的地层孔隙度的方法。 该方法包括沿着所述钻孔输送工具，其中所述工具包括中子辐射源和至少两个在至少两个不同间隔处与所述源轴向间隔开的检测器。 选择至少一个近检测器和至少一个远检测器，并计算校正值。 通过用计算的校正校正远检测器孔隙度来确定地层的孔隙度。

公开(公告)号：US07112783B2

公开(公告)日：2006-09-26

申请号：US10657391

申请日：2003-09-08

申请人： Darwin Ellis ,  Benoit Couet ,  Michael Evans ,  Charles R. Case ,  Françoise Allioli

发明人： Darwin Ellis ,  Benoit Couet ,  Michael Evans ,  Charles R. Case ,  Françoise Allioli

IPC分类号： G01V5/10

CPC分类号： G01V5/108

摘要： The invention concerns a neutron measurement method for determining porosity of an earth formation surrounding a borehole comprising: conveying a tool along said borehole, wherein said tool comprises a source of neutron radiation and at least one detector axially spaced from said source; generating measured detector response for said at least one detector that is indicative of neutron radiation from said source interacting with said earth formations; operating said measured detector response with a predetermined mathematical equation and thereby obtaining corrected detector response that is independent of the density of said earth formation; and determining porosity of the earth formation surrounding the borehole from said corrected detector response. The invention also relates to a system implementing said method.

摘要翻译： 本发明涉及一种用于确定钻孔周围的地层的孔隙度的中子测量方法，包括：沿着所述钻孔输送工具，其中所述工具包括中子辐射源和与所述源轴向间隔开的至少一个检测器; 产生所述至少一个检测器的测量的检测器响应，其指示与所述地层相互作用的来自所述源的中子辐射; 以预定的数学方程操作所述测量的检测器响应，从而获得独立于所述地层密度的校正的检测器响应; 以及从所述校正的检测器响应确定钻孔周围的地层的孔隙度。 本发明还涉及一种实现所述方法的系统。