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1. 发明申请

US20110004408A1 ESTIMATING SIGMA LOG BEYOND THE MEASUREMENTS POINTS 有权
标题翻译：估计SIGMA记录在测量点之外
公开(公告)号：US20110004408A1
公开(公告)日：2011-01-06
申请号：US12797182
申请日：2010-06-09
申请人： Chanh Cao Minh , Marie Laure Mauborgne , Roger Griffiths , Darwin Ellis
发明人： Chanh Cao Minh , Marie Laure Mauborgne , Roger Griffiths , Darwin Ellis
IPC分类号： G01V5/04 , G06F19/00
CPC分类号： G01V11/00
摘要： The present disclosure relates to a method to determine the capture cross-section of a subsurface formation at a desired depth in the formation. A database of Sigma values for known lithologies, porosities, and salinities is provided, and multiple Sigma measurements are obtained from a downhole logging tool. Within the database, Sigma values are interpolated to determine the respective depths of investigation of the multiple Sigma measurements. A monotonic function is fitted to the multiple Sigma measurements at the determined depths of investigation, and the capture cross-section of the subsurface formation at any desired depth in the formation is determined using the fitted function. Similarly, a system to determine the capture cross-section of a subsurface formation at a desired depth in the formation and/or a depth of invasion of drilling fluids is also disclosed.
摘要翻译：本公开涉及确定地层中所需深度处的地下地层的捕获横截面的方法。提供了用于已知岩性，孔隙度和盐度的Sigma值的数据库，并且从井下测井工具获得多个Sigma测量。在数据库中，内插Sigma值以确定多个Sigma测量的相应调查深度。在确定的调查深度上将多元西格玛测量拟合为单调函数，并且使用拟合函数确定地层中任何所需深度处的地下地层的捕获截面。类似地，还公开了一种用于确定地层中所需深度和/或钻井液侵入深度的地下地层的捕获横截面的系统。

2. 发明授权

US08521435B2 Estimating sigma log beyond the measurements points 有权
标题翻译：估算sigma日志超出测量点
公开(公告)号：US08521435B2
公开(公告)日：2013-08-27
申请号：US12797182
申请日：2010-06-09
申请人： Chanh Cao Minh , Marie Laure Mauborgne , Roger Griffiths , Darwin Ellis
发明人： Chanh Cao Minh , Marie Laure Mauborgne , Roger Griffiths , Darwin Ellis
IPC分类号： G01V9/00 , G01V11/00 , G06F19/00 , G06F17/40
CPC分类号： G01V11/00
摘要： The present disclosure relates to a method to determine the capture cross-section of a subsurface formation at a desired depth in the formation. A database of Sigma values for known lithologies, porosities, and salinities is provided, and multiple Sigma measurements are obtained from a downhole logging tool. Within the database, Sigma values are interpolated to determine the respective depths of investigation of the multiple Sigma measurements. A monotonic function is fitted to the multiple Sigma measurements at the determined depths of investigation, and the capture cross-section of the subsurface formation at any desired depth in the formation is determined using the fitted function. Similarly, a system to determine the capture cross-section of a subsurface formation at a desired depth in the formation and/or a depth of invasion of drilling fluids is also disclosed.
摘要翻译：本公开涉及确定地层中所需深度处的地下地层的捕获横截面的方法。提供了用于已知岩性，孔隙度和盐度的Sigma值的数据库，并且从井下测井工具获得多个Sigma测量。在数据库中，内插Sigma值以确定多个Sigma测量的相应调查深度。在确定的调查深度上将多元西格玛测量拟合为单调函数，并且使用拟合函数确定地层中任何所需深度处的地下地层的捕获截面。类似地，还公开了一种用于确定地层中所需深度和/或钻井液侵入深度的地下地层的捕获横截面的系统。

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