公开(公告)号：US20070145259A1

公开(公告)日：2007-06-28

申请号：US11315880

申请日：2005-12-22

申请人： W. Gilchrist ,  Sergey Efremov

发明人： W. Gilchrist ,  Sergey Efremov

IPC分类号： G01V5/08

CPC分类号： G01V5/125 ,  G01V5/101 ,  G01V5/107

摘要： Measurements made with a nuclear logging tool are partitioned into bins to provide an energy spectrum. The energy spectrum is calibrated by maximizing a measure of similarity with a reference spectrum.

摘要翻译： 用核测井工具进行的测量被划分成箱体以提供能谱。 通过用参考光谱最大化相似度测量来校准能谱。

公开(公告)号：US07446308B2

公开(公告)日：2008-11-04

申请号：US11315880

申请日：2005-12-22

申请人： W. Allen Gilchrist ,  Sergey Efremov

发明人： W. Allen Gilchrist ,  Sergey Efremov

IPC分类号： G01V5/08

CPC分类号： G01V5/125 ,  G01V5/101 ,  G01V5/107

摘要： Measurements made with a nuclear logging tool are partitioned into bins to provide an energy spectrum. The energy spectrum is calibrated by maximizing a measure of similarity with a reference spectrum.

摘要翻译： 用核测井工具进行的测量被划分成箱体以提供能谱。 通过用参考光谱最大化相似度测量来校准能谱。

公开(公告)号：US20060149477A1

公开(公告)日：2006-07-06

申请号：US11322050

申请日：2005-12-29

申请人： Paul Cairns ,  Sergey Efremov ,  David Schneider ,  Sassan Dehlavi ,  Robert Estes ,  Samuel Bell

发明人： Paul Cairns ,  Sergey Efremov ,  David Schneider ,  Sassan Dehlavi ,  Robert Estes ,  Samuel Bell

IPC分类号： G06F19/00

CPC分类号： E21B44/00 ,  E21B47/0002 ,  E21B47/024 ,  E21B47/026 ,  G01V5/04

摘要： This invention provides a measurement-while-drilling (MWD) downhole assembly for use in drilling boreholes which utilizes directional formation evaluation devices on a rotating assembly in conjunction with toolface orientation sensors. The data from the toolface orientation sensors are analyzed by a processor and toolface angle measurements are determined at defined intervals. Formation evaluation sensors operate substantially independently of the toolface orientation sensors and measurements of the formation evaluation sensors are analyzed in combination with the determined toolface angle to obtain formation parameters.