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公开(公告)号：US10429536B2
公开(公告)日：2019-10-01
申请号：US15089893
申请日：2016-04-04
申请人： Tobias Kischkat , Radu Coman , Holger Frank Thern
发明人： Tobias Kischkat , Radu Coman , Holger Frank Thern
IPC分类号： G01V3/32 , G01R33/50 , G01R33/565 , G01N24/08 , G01R33/44
摘要： A method for processing nuclear magnetic resonance (NMR) measurement data includes receiving, with a processor, NMR measurement data obtained from an NMR tool, the NMR measurement data having an echo train affected by a motion artifact, wherein the motion artifact is related to a magnetic field magnitude that varies in a volume of interest due to a motion of the NMR tool. The method further includes reducing, with the processor, an effect on the NMR measurement data of the motion artifact by using a correcting inversion method that models the motion artifact to provide a corrected transverse relaxation time constant (T2) distribution, the correcting inversion method having a multiplicative term having a term that includes at least one local maximum and an optional decay term.
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公开(公告)号：US20170285214A1
公开(公告)日：2017-10-05
申请号：US15089893
申请日：2016-04-04
申请人： Tobias Kischkat , Radu Coman , Holger Frank Thern
发明人： Tobias Kischkat , Radu Coman , Holger Frank Thern
IPC分类号： G01V3/32 , G01R33/565 , G01R33/50
CPC分类号： G01V3/32 , G01N24/081 , G01R33/448 , G01R33/56509
摘要： A method for processing nuclear magnetic resonance (NMR) measurement data includes receiving, with a processor, NMR measurement data obtained from an NMR tool, the NMR measurement data having an echo train affected by a motion artifact, wherein the motion artifact is related to a magnetic field magnitude that varies in a volume of interest due to a motion of the NMR tool. The method further includes reducing, with the processor, an effect on the NMR measurement data of the motion artifact by using a correcting inversion method that models the motion artifact to provide a corrected transverse relaxation time constant (T2) distribution, the correcting inversion method having a multiplicative term having a term that includes at least one local maximum and an optional decay term.
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公开(公告)号：US07996153B2
公开(公告)日：2011-08-09
申请号：US12134650
申请日：2008-06-06
申请人： Eick Niemeyer , Tobias Kischkat , Matthias Meister
发明人： Eick Niemeyer , Tobias Kischkat , Matthias Meister
CPC分类号： E21B49/008 , E21B49/10 , G01V11/00
摘要： A method includes calculating a correction factor that uses a tool component volume change model to estimate a system volume change resulting from a change in the tool component. An apparatus includes a carrier conveyable into a well borehole, a formation test tool coupled to the carrier, the formation test tool including a tool component. A measurement device to estimate a change in the tool component during operation, and a compensator uses an estimated system volume change resulting at least in part from the change in the tool component during a downhole operation, the compensator compensating for the system volume change and wherein the estimated system volume change is estimated at least in part using a volume change model.
摘要翻译： 一种方法包括计算使用工具组件卷改变模型来估计由刀具部件的变化导致的系统体积变化的校正因子。 一种装置包括可输送到井眼中的载体，联接到载体的地层测试工具，地层测试工具包括工具部件。 一种用于估计操作期间刀具部件的变化的测量装置，并且补偿器使用估计的系统体积变化，至少部分地由于在井下操作期间刀具部件的变化，补偿器补偿系统体积变化，并且其中 估计系统体积变化至少部分地使用体积变化模型估计。
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公开(公告)号：US20100153014A1
公开(公告)日：2010-06-17
申请号：US12333514
申请日：2008-12-12
CPC分类号： G01V11/002 , G01V8/02
摘要： Apparatus and methods for estimating a downhole property are provided. The apparatus may include a downhole tool having a predetermined temperature calibration based at least in part on an expected downhole temperature and a temperature controller in communication with the downhole tool that maintains a downhole tool temperature substantially within the predetermined temperature calibration. A method may include conveying a downhole tool having a predetermined temperature calibration based at least in part on an expected downhole temperature in a well borehole and adjusting the temperature of the downhole tool during downhole operation to maintain a downhole tool temperature substantially within the predetermined temperature calibration.
摘要翻译： 提供了用于估计井下性能的装置和方法。 该设备可以包括至少部分地基于期望的井下温度和与井下工具连通的温度控制器的预定温度校准的井下工具，其将井下工具温度保持在基本上在预定温度校准范围内。 一种方法可以包括至少部分地基于井眼中的期望的井下温度输送具有预定温度校准的井下工具，并且在井下操作期间调节井下工具的温度以将井下工具温度基本保持在预定温度校准 。
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公开(公告)号：US20120239301A1
公开(公告)日：2012-09-20
申请号：US13420736
申请日：2012-03-15
申请人： Tobias Kischkat
发明人： Tobias Kischkat
CPC分类号： G01N11/16 , G01N9/002 , G01N27/026 , G01N33/2823
摘要： A method for determining a property of a fluid includes: receiving at a computing device an admittance spectrum created by application of an excitation to a resonator contacting the fluid, the spectrum covering a first frequency range and having real and imaginary components; determining a resonant frequency of the admittance spectrum, the resonant frequency being a frequency at which a magnitude of the imaginary component is about zero; determining a bandwidth of the spectrum; and determining the property based on one or both of the resonant frequency and the bandwidth of the resonant frequency.
摘要翻译： 一种用于确定流体性质的方法包括：在计算装置处接收通过向接触流体的谐振器施加激励而产生的导纳谱，所述光谱覆盖第一频率范围并具有实部和虚部; 确定导纳谱的谐振频率，所述谐振频率是所述虚部的大小约为零的频率; 确定频谱的带宽; 以及基于谐振频率的谐振频率和带宽中的一个或两个来确定该特性。
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公开(公告)号：US20080234938A1
公开(公告)日：2008-09-25
申请号：US12134650
申请日：2008-06-06
申请人： Eick Niemeyer , Tobias Kischkat , Matthias Meister
发明人： Eick Niemeyer , Tobias Kischkat , Matthias Meister
IPC分类号： G01V3/38
CPC分类号： E21B49/008 , E21B49/10 , G01V11/00
摘要： A method includes calculating a correction factor that uses a tool component volume change model to estimate a system volume change resulting from a change in the tool component. An apparatus includes a carrier conveyable into a well borehole, a formation test tool coupled to the carrier, the formation test tool including a tool component. A measurement device to estimate a change in the tool component during operation, and a compensator uses an estimated system volume change resulting at least in part from the change in the tool component during a downhole operation, the compensator compensating for the system volume change and wherein the estimated system volume change is estimated at least in part using a volume change model.
摘要翻译： 一种方法包括计算使用工具组件卷改变模型来估计由刀具部件的变化导致的系统体积变化的校正因子。 一种装置包括可输送到井眼中的载体，联接到载体的地层测试工具，地层测试工具包括工具部件。 一种用于估计操作期间刀具部件的变化的测量装置，并且补偿器使用估计的系统体积变化，至少部分地由于在井下操作期间刀具部件的变化，补偿器补偿系统体积变化，并且其中 估计系统体积变化至少部分地使用体积变化模型估计。
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公开(公告)号：US20080015781A1
公开(公告)日：2008-01-17
申请号：US11776647
申请日：2007-07-12
申请人： Eick Niemeyer , Tobias Kischkat , Matthias Meister
发明人： Eick Niemeyer , Tobias Kischkat , Matthias Meister
IPC分类号： G01V9/00
CPC分类号： G01V11/00 , E21B49/008 , E21B49/10
摘要： A method for conducting a formation test includes providing a volume change model for a tool component, and providing a control program that uses the volume change model to estimate a system volume change resulting from a change in the tool component during a downhole operation. An apparatus for conducting a formation test includes a carrier, a formation test tool, a measurement device that estimates a change in a tool component during operation, and a processor that uses a volume change model to estimate a system volume change resulting at least in part from the change in the tool component during a downhole operation.
摘要翻译： 用于进行形成测试的方法包括提供用于工具组件的体积变化模型，以及提供使用体积变化模型的控制程序，以估计在井下操作期间由于工具部件的变化导致的系统体积变化。 用于进行形成测试的装置包括载体，地层测试工具，估计操作期间工具部件的变化的测量装置，以及使用体积变化模型估计至少部分地产生的系统体积变化的处理器 在井下操作期间从工具部件的变化。
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公开(公告)号：US08708042B2
公开(公告)日：2014-04-29
申请号：US13026465
申请日：2011-02-14
申请人： Tobias Kischkat , Eick Niemeyer , Alexander Otto
发明人： Tobias Kischkat , Eick Niemeyer , Alexander Otto
CPC分类号： E21B49/10 , Y10T137/0379 , Y10T137/86389
摘要： An apparatus for controlling fluid flow that includes a chamber having a first valve and a second valve; a sensor that senses a pressure parameter associated with the chamber; and a controller programmed to operate the first valve and the second valve in response to the sensed pressure parameter may be used to control for flow and to obtain data relating to a formation and/or formation fluid.
摘要翻译： 一种用于控制流体流动的装置，包括具有第一阀和第二阀的腔室; 传感器，其感测与所述室相关联的压力参数; 并且被编程为响应于感测的压力参数操作第一阀和第二阀的控制器可以用于控制流量并获得与地层和/或地层流体有关的数据。
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9.发明授权Rock and fluid properties prediction from downhole measurements using linear and nonlinear regression 有权使用线性和非线性回归的井下测量的岩石和流体特性预测公开(公告)号：US08093893B2
公开(公告)日：2012-01-10
申请号：US12327700
申请日：2008-12-03
IPC分类号： G01V3/00
CPC分类号： G01R33/5617 , G01N24/081 , G01V3/32
摘要： Measurements of fluorescence spectra of fluid samples recovered downhole are processed to give the fluid composition. The processing may include a principal component analysis followed by a clustering method or a neutral network. Alternatively the processing may include a partial least squares regression. The latter can give the analysis of a mixture of three or more fluids.
摘要翻译： 对在井下回收的流体样品的荧光光谱进行处理，得到流体组成。 该处理可以包括主成分分析，随后是聚类方法或中性网络。 或者，处理可以包括偏最小二乘回归。 后者可以分析三种或更多种流体的混合物。
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公开(公告)号：US20100148785A1
公开(公告)日：2010-06-17
申请号：US12333525
申请日：2008-12-12
申请人： Peter Schaefer , Tobias Kischkat
发明人： Peter Schaefer , Tobias Kischkat
IPC分类号： G01V3/00
CPC分类号： G01V8/02 , G01N21/8507
摘要： An apparatus for evaluating downhole fluids is disclosed. The apparatus includes: an optical block having an adjustable opening that receives electromagnetic energy emitted by an electromagnetic energy source; a controller operatively associated with the optical block for adjusting the opening size, wherein the opening size is adjusted at least in part based on one or more estimated downhole parameters; and a sensor that receives the electromagnetic energy emitted by the electromagnetic energy source after the emitted electromagnetic energy interacts with a downhole fluid. A method for evaluating downhole fluids is also disclosed.
摘要翻译： 公开了一种用于评估井下流体的装置。 该装置包括：具有可调开口的光学块，其接收由电磁能源发射的电磁能; 操作地与所述光学块相关联的用于调节所述开口尺寸的控制器，其中所述开口尺寸至少部分地基于一个或多个估计的井下参数来调节; 以及传感器，其在发射的电磁能量与井下流体相互作用之后接收由电磁能源发射的电磁能。 还公开了一种用于评估井下流体的方法。
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