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公开(公告)号:US09223056B2
公开(公告)日:2015-12-29
申请号:US14065152
申请日:2013-10-28
Applicant: Schlumberger Technology Corporation
Inventor: Peter T. Wu , Hanming Wang , Gerald N. Minerbo
Abstract: A method for correcting formation properties due to effects of a borehole is disclosed. The method includes obtaining voltage measurements using a logging tool disposed in a borehole penetrating a subsurface formation. The method further includes using a processor to: determine a tensor for the formation using the voltage measurement. For a given set of parameters, the processor determines, based upon the voltage measurements, a parameter value for each parameter in a subset of the set of parameters. The method further uses the processor to compute a borehole-inclusive modeled tensor that includes the effects of the borehole using the parameter values, optimize the parameter values using the determined tensor and the borehole-inclusive tensor, compute an optimized tensor using the optimized parameter values, compute a borehole corrected tensor using the optimized tensor, and determine at least one borehole corrected formation property using at least one of the borehole corrected tensor or the optimized parameter values.
Abstract translation: 公开了一种由于钻孔的影响而校正地层特性的方法。 该方法包括使用设置在穿透地下地层的钻孔中的测井工具来获得电压测量。 该方法还包括使用处理器:使用电压测量来确定用于地层的张量。 对于给定的一组参数,处理器基于电压测量来确定该组参数的子集中的每个参数的参数值。 该方法还使用处理器来计算包含井眼的建模的张量,其包括使用参数值的钻孔的影响,使用所确定的张量和包括钻孔的张量优化参数值,使用优化的参数值计算优化的张量 使用所述优化的张量来计算钻孔校正张量,并且使用所述钻孔校正张量或所述优化参数值中的至少一个来确定至少一个钻孔校正的地层特性。
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公开(公告)号:US20140121978A1
公开(公告)日:2014-05-01
申请号:US14065152
申请日:2013-10-28
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor: Peter T. Wu , Hanming Wang , Gerald N. Minerbo
Abstract: A method for correcting formation properties due to effects of a borehole is disclosed. The method includes obtaining voltage measurements using a logging tool disposed in a borehole penetrating a subsurface formation. The method further includes using a processor to: determine a tensor for the formation using the voltage measurement. For a given set of parameters, the processor determines, based upon the voltage measurements, a parameter value for each parameter in a subset of the set of parameters. The method further uses the processor to compute a borehole-inclusive modeled tensor that includes the effects of the borehole using the parameter values, optimize the parameter values using the determined tensor and the borehole-inclusive tensor, compute an optimized tensor using the optimized parameter values, compute a borehole corrected tensor using the optimized tensor, and determine at least one borehole corrected formation property using at least one of the borehole corrected tensor or the optimized parameter values.
Abstract translation: 公开了一种由于钻孔的影响而校正地层特性的方法。 该方法包括使用设置在穿透地下地层的钻孔中的测井工具来获得电压测量。 该方法还包括使用处理器:使用电压测量来确定用于地层的张量。 对于给定的一组参数,处理器基于电压测量来确定该组参数的子集中的每个参数的参数值。 该方法还使用处理器来计算包含井眼的建模的张量,其包括使用参数值的钻孔的影响,使用所确定的张量和包括钻孔的张量优化参数值,使用优化的参数值计算优化的张量 使用所述优化的张量来计算钻孔校正张量,并且使用所述钻孔校正张量或所述优化参数值中的至少一个来确定至少一个钻孔校正的地层特性。
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