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公开(公告)号：US20160320517A1
公开(公告)日：2016-11-03
申请号：US15104051
申请日：2014-12-12
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Peter T. Wu
IPC: G01V3/28
Abstract: A method for identifying fractures from measurements made by a multi-axial electromagnetic induction tool in a wellbore traversing subsurface formations includes determining a value of a fracture orientation indicator from in line components of the multi-axial electromagnetic inducion measurements mode transverse to a tool axis, and parallel to the tool axis. The tool axis is sub-stantially parallel to a bedding plane of the subsurface formations. A value of a vertical fracture indicator is determined using the in line components of the multi-axial electromagnetic induction measurements made transverse to the tool axis, and parallel to the tool axis.
Abstract translation: 用于通过穿过地下地层的井眼中的多轴电磁感应工具进行的测量来识别裂缝的方法包括：从垂直于刀具轴线的多轴电磁感应测量模式的直线分量确定断裂取向指示器的值， 并平行于刀具轴。 工具轴与地下地层的床层平行地平行。 使用横向于刀具轴线并平行于刀具轴线的多轴电磁感应测量的直线分量来确定垂直断裂指示器的值。
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公开(公告)号：US20130335092A1
公开(公告)日：2013-12-19
申请号：US13784153
申请日：2013-03-04
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Peter T. Wu
IPC: G01V3/28
CPC classification number: G01V3/28
Abstract: A method for estimating fracture aperture from multi-axial electromagnetic induction measurements made in a wellbore includes determining a fracture indicator and a fracture orientation indicator. The value of the fracture indicator is determined from components of the measurements made transverse to the tool axis. A relationship between the value of the fracture indicator and the fracture aperture for the subsurface formation is determined by estimating the fracture indicator using a plurality of values of fracture aperture and a resistivity of drilling fluid in the wellbore over a background formation with estimated horizontal resistivity and vertical resistivity. The fracture aperture is determined using the determined fracture indicator and the determined relationship.
Abstract translation: 在井眼中进行的多轴电磁感应测量中估计断裂孔径的方法包括确定裂缝指示器和断裂取向指示器。 断裂指示器的值由横向于刀具轴线的测量的部件确定。 裂缝指示值与地下构造的断裂孔之间的关系是通过使用估计的水平电阻率的背景地层上的多个裂缝孔径和钻井液在井筒中的电阻率的估计来估计裂缝指示器来确定的，并且 垂直电阻率。 断裂孔径使用确定的断裂指标和确定的关系确定。
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公开(公告)号：US10935690B2
公开(公告)日：2021-03-02
申请号：US15775353
申请日：2016-10-14
Applicant: Schlumberger Technology Corporation
Inventor： Peter T. Wu
Abstract: A two-step inversion method for computing multi-layer subterranean formation properties includes processing gain compensated electromagnetic measurement quantities using a first inversion to compute a corresponding set of borehole corrected gain compensated measurement quantities. The first inversion includes a mathematical model of the tool and the borehole in a uniform, anisotropic formation. The set of borehole corrected gain compensated measurement quantities are then processed using a second inversion to compute multi-layer anisotropic formation properties. The second inversion includes a 1D inversion employing a point dipole model and a multi-layer formation model.
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公开(公告)号：US10371851B2
公开(公告)日：2019-08-06
申请号：US14887975
申请日：2015-10-20
Applicant: Schlumberger Technology Corporation
Inventor： Peter T. Wu , Samer Alatrach
Abstract: A method for characterizing fractures traversing a wellbore includes input to a computer multiaxial electromagnetic induction measurements corresponding to measurements made along two mutually orthogonal magnetic dipole moment axes perpendicular to an axis of the wellbore. The measurements correspond to at least one receiver spacing from a transmitter. The measurements represent induced voltage in a receiver having a same dipole moment direction as a dipole moment direction of a transmitter. A first derivative with respect to wellbore depth of the multiaxial electromagnetic induction measurements is calculated. At least one peak and an amplitude thereof of the first derivatives is calculated. The peak and the amplitude are used to determine a location and an aperture of at least one fracture traversing the wellbore.
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5.发明申请公开(公告)号：US20170075024A1
公开(公告)日：2017-03-16
申请号：US14853322
申请日：2015-09-14
Applicant: Schlumberger Technology Corporation
Inventor： Peter T. Wu , Mark T. Frey
CPC classification number: G01V3/30
Abstract: A method for making downhole electromagnetic logging measurements includes using an electromagnetic measurement tool to acquire the measurements while rotating in a subterranean wellbore. Received electromagnetic waves are processed to obtain harmonic voltage coefficients, ratios of which are in turn further processed to compute gain compensated measurement quantities. The gain compensated measurement quantities are further processed to compute at least one of an apparent formation azimuth of the formation through which the wellbore traverses, an apparent tool eccentering azimuth, and an eccentering distance of the logging tool in the wellbore.
Abstract translation: 用于制造井下电磁测井测量的方法包括使用电磁测量工具在地下井眼中旋转时获取测量值。 接收的电磁波被处理以获得谐波电压系数，其比例又被进一步处理以计算增益补偿测量量。 增益补偿测量量被进一步处理以计算井眼横穿的地层的表观形成方位角，表观工具偏心方位角和测井工具在井眼中的偏心距离中的至少一个。
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Patent Agency Ranking
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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公开(公告)号：US10508535B2
公开(公告)日：2019-12-17
申请号：US14528983
申请日：2014-10-30
Applicant: Schlumberger Technology Corporation
Inventor： Peter T. Wu
IPC: E21B7/06 , E21B3/00 , E21B47/024 , E21B47/022
Abstract: A method for drilling a wellbore includes drilling a well along a path substantially along a bedding direction of a selected subsurface formation having at least one substantially vertical fracture therein. A direction of the at least one substantially vertical fracture is determined with respect to a direction of the prior to drilling therethrough. A direction of the path is adjusted so that the well will intersect the at least one substantially vertical fracture substantially perpendicularly to the direction.
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公开(公告)号：US10386528B2
公开(公告)日：2019-08-20
申请号：US14853322
申请日：2015-09-14
Applicant: Schlumberger Technology Corporation
Inventor： Peter T. Wu , Mark T. Frey
IPC: G01V3/30
Abstract: A method for making downhole electromagnetic logging measurements includes using an electromagnetic measurement tool to acquire the measurements while rotating in a subterranean wellbore. Received electromagnetic waves are processed to obtain harmonic voltage coefficients, ratios of which are in turn further processed to compute gain compensated measurement quantities. The gain compensated measurement quantities are further processed to compute at least one of an apparent formation azimuth of the formation through which the wellbore traverses, an apparent tool eccentering azimuth, and an eccentering distance of the logging tool in the wellbore.
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公开(公告)号：US10345476B2
公开(公告)日：2019-07-09
申请号：US15104051
申请日：2014-12-12
Applicant: Schlumberger Technology Corporation
Inventor： Peter T. Wu
Abstract: A method for identifying fractures from measurements made by a multi-axial electromagnetic induction tool in a wellbore traversing subsurface formations includes determining a value of a fracture orientation indicator from in line components of the multi-axial electromagnetic induction measurements made transverse to a tool axis, and parallel to the tool axis. The tool axis is substantially parallel to a bedding plane of the subsurface formations. A value of a vertical fracture indicator is determined using the in line components of the multi-axial electromagnetic induction measurements made transverse to the tool axis, and parallel to the tool axis.
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