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公开(公告)号：US10794890B2
公开(公告)日：2020-10-06
申请号：US14135377
申请日：2013-12-19
Applicant: Schlumberger Technology Corporation
Inventor： Kentaro Indo , Kai Hsu , Julian Pop
IPC: E21B49/08 , G01N33/28 , G01N21/31 , G01V8/00 , G01V8/12 , G01N21/85 , G01N21/53 , G01N21/59 , G01N21/3577
Abstract: A method for measuring asphaltene content of a crude oil is provided. In one embodiment, the method includes measuring an optical density of a live crude oil within a well and calculating a formation volume factor of the live crude oil based on the measured optical density. The method also includes determining asphaltene content of the live crude oil based on the measured optical density and the calculated formation volume factor of the live crude oil. Additional methods, systems, and devices are also disclosed.
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公开(公告)号：US10358918B2
公开(公告)日：2019-07-23
申请号：US14884623
申请日：2015-10-15
Applicant: Schlumberger Technology Corporation
Inventor： Kai Hsu , Kentaro Indo , Julian Pop
IPC: E21B49/08 , E21B49/10 , G01N29/032 , G01N29/34 , G01N21/53
Abstract: Obtaining in-situ, at a first time, first optical spectral data associated with a formation fluid flowing through a downhole formation fluid sampling apparatus, and then obtaining in-situ, at a second time after the first time, second optical spectral data associated with the formation fluid flowing through the downhole formation fluid sampling apparatus. A wavelength-independent scattering intensity within the formation fluid flowing through the downhole formation fluid sampling apparatus is then determined based on the first and second optical spectral data, and a wavelength-dependent scattering intensity within the formation fluid flowing through the downhole formation fluid sampling apparatus is determined based on the first and second optical spectral data.
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公开(公告)号：US10125545B2
公开(公告)日：2018-11-13
申请号：US14975694
申请日：2015-12-18
Applicant: Schlumberger Technology Corporation
Inventor： Kai Hsu , Fei Song , Weiming Lan , Derek Copold , Nathan Landsiedel , Arvind Battula , Daniel Schulz , Sashank Vasireddy
Abstract: A manufacturing system that manufactures a downhole tool string, which includes a model that describes relationship between properties of the downhole tool string, properties of a borehole, properties of a formation, and properties of a mud cake formed on a surface of the borehole and a design device that iteratively determines contact parameters that describe one or more contact points expected between the downhole tool string and the mud cake based at least in part on the model, in which the contact parameters comprise contact force expected at each of the contact points, adjusts the properties of the downhole tool string to add a spacer at one of the contact points associated with highest contact force, and indicates location, type, or both of the spacer to enable the manufacturing system to attach the spacer to the downhole tool string before deployment of the downhole tool string in the borehole.
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公开(公告)号：US20180119547A1
公开(公告)日：2018-05-03
申请号：US15790689
申请日：2017-10-23
Applicant: Schlumberger Technology Corporation
Inventor： Miroslav Slapal , Christopher Albert Babin , Daniel Palmer , Kai Hsu , Anthony Robert Holmes Goodwin , Julian Pop , Nathan Mathew Landsiedel , Adriaan Gisolf
CPC classification number: E21B49/088 , E21B21/10 , E21B34/10 , E21B49/081
Abstract: A method includes positioning a downhole acquisition tool in a wellbore in a geological formation. The method includes operating a pump module to gather information for a fluid outside of the downhole acquisition tool that enters the downhole acquisition tool from a first flowline, a second flowline, or both while the downhole acquisition tool is within the wellbore. Operating the pump module includes controlling a valve assembly to a first valve configuration that enables the fluid to flow into the downhole tool via the first flowline fluidly coupled to a first pump module. Operating the pump module includes controlling a valve assembly to a second valve configuration that enables the fluid to flow into the downhole tool via the second flowline fluidly coupled to a second pump module, and selectively using a turnaround module or a crossover portion disposed between the first flowline and the second flowline to permit discharging the fluid from one flowline to the other flowline by actuating a valve associated with the turnaround module when the first pump module or the second pump module is not in use.
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公开(公告)号：US09650892B2
公开(公告)日：2017-05-16
申请号：US14574376
申请日：2014-12-17
Applicant: Schlumberger Technology Corporation
Inventor： Kentaro Indo , Kai Hsu , Julian J. Pop
CPC classification number: E21B49/087 , E21B49/10 , G01N21/85 , G01N33/24
Abstract: Optical spectral data associated with a formation fluid flowing through a downhole formation fluid sampling apparatus is obtained. Based on the obtained optical spectra data, a plurality of measures each relating the formation fluid to a corresponding one of a plurality of different fluid types are estimated. Blending coefficients each corresponding to a different one of the different fluid types are determined and utilized with the predetermined mapping matrices, each corresponding to a different one of the different fluid types, to obtain a blended mapping matrix. A parameter of the formation fluid is then predicted based on a projection of the obtained spectral data onto the blended mapping matrix.
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Patent Agency Ranking
公开(公告)号：US09612154B2
公开(公告)日：2017-04-04
申请号：US14577573
申请日：2014-12-19
Applicant: Schlumberger Technology Corporation
Inventor： Kentaro Indo , Alexis Petit , Vivek Agarwal , Sepand Ossia , Julian J. Pop , Kai Hsu
CPC classification number: G01J3/0297 , E21B47/01 , E21B49/087 , E21B49/10 , G01V8/02
Abstract: A method for analyzing the condition of a spectrometer is provided. In one embodiment, the method includes acquiring optical data from a spectrometer of a downhole tool during flushing of a flowline and selecting a data set from the acquired optical data. The method can also include estimating light scattering and optical drift for the spectrometer based on the selected data set and determining impacts of the estimated light scattering and optical drift for the spectrometer on measurement accuracy of a characteristic of a downhole fluid determinable through analysis of the downhole fluid using the spectrometer. Additional methods, systems, and devices are also disclosed.
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公开(公告)号：US09453408B2
公开(公告)日：2016-09-27
申请号：US14827718
申请日：2015-08-17
Applicant: Schlumberger Technology Corporation
Inventor： Kentaro Indo , Kai Hsu , Julian Pop
CPC classification number: E21B47/102 , E21B49/088 , E21B49/10 , G01N21/274 , G01N21/31 , G01N21/85 , G01V8/10
Abstract: A system includes a downhole formation fluid sampling tool and a processor. An optical spectrometer of the downhole formation fluid sampling tool is able to measure an optical characteristic of a formation fluid flowing through the downhole formation fluid sampling tool over a plurality of wavelengths. The optical spectrometer generates optical spectra data indicative of this optical characteristic. The processor is designed to receive the optical spectra data generated by the optical spectrometer and to estimate a formation volume factor of the formation fluid based on the optical spectra data.
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公开(公告)号：US09441481B2
公开(公告)日：2016-09-13
申请号：US14408550
申请日：2013-03-13
Applicant: Schlumberger Technology Corporation
Inventor： Kentaro Indo , Julian Pop , Kai Hsu
CPC classification number: E21B49/088 , E21B47/102 , G01N21/31 , G01N21/359 , G01V8/00 , G01V8/10
Abstract: A method for identifying the type of a sampled formation fluid, such as a hydrocarbon, is provided. In one embodiment, the method includes measuring absorbance by a sample of a formation fluid at multiple wavelengths of electromagnetic radiation with a spectrometer. The method also includes distinguishing between multiple fluid types to identify a fluid type of the sample most likely to match an actual fluid type of the sample based on the measured absorbance at two or more wavelengths of the multiple wavelengths. Additional systems, devices, and methods are also disclosed.
Abstract translation: 提供了一种用于识别诸如烃的采样地层流体的类型的方法。 在一个实施例中，该方法包括用光谱仪测量多个波长的电磁辐射下的地层流体的样品的吸光度。 该方法还包括区分多种流体类型，以基于在多个波长的两个或多个波长处测量的吸光度来识别最可能匹配样品的实际流体类型的样品的流体类型。 还公开了附加的系统，装置和方法。
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公开(公告)号：US20150142321A1
公开(公告)日：2015-05-21
申请号：US14085455
申请日：2013-11-20
Applicant: Schlumberger Technology Corporation
Inventor： Adriaan Gisolf , Kai Hsu , Youxiang Zuo , Chen Tao
Abstract: A method to detect flow rate from a displacement unit entailing locating the displacement unit in a fluid path, monitoring a piston position in the displacement unit for a stroke direction change, starting a timer upon a stroke direction change, monitoring at least one check valve position for an alteration of position, stopping the timer upon the alteration of position, calculating a time between the stroke direction change and the alternation of position, calculating a volume of the displacement unit and calculating the flow rate from the displacement unit by dividing the volume of the displacement unit by the calculated time.
Abstract translation: 一种检测来自位移单元的流量的方法，其将位移单元定位在流体路径中，监测位移单元中的行程方向改变的活塞位置，在行程方向改变时启动定时器，监视至少一个止回阀位置 用于改变位置，在改变位置时停止定时器，计算行程方向改变和位置交替之间的时间，计算位移单元的体积并通过将位移单元的体积除以来计算来自位移单元的流量 排量单位按计算时间计算。
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公开(公告)号：US20150013968A1
公开(公告)日：2015-01-15
申请号：US13937594
申请日：2013-07-09
Applicant: Schlumberger Technology Corporation
Inventor： Kai Hsu , Kentaro Indo , Julian Pop
IPC: E21B47/06
CPC classification number: E21B47/06 , E21B27/00 , E21B49/082 , E21B49/087
Abstract: A method includes pumping fluid from outside of a downhole tool through a flowline of the downhole tool with a pump and taking first measurements, using at least one sensor, within the flowline during a first stage of pumping the fluid. The method further includes estimating a saturation pressure of the fluid, via a processor, based on the first measurements and a saturation pressure model generated based on second measurements taken using the at least one sensor during a second stage of pumping the fluid, and operating the pump to maintain a fluid pressure in the flowline greater than the estimated saturation pressure.
Abstract translation: 一种方法包括使用泵从井下工具的外部泵送流体通过井下工具的流线，并且在泵送流体的第一阶段期间使用至少一个传感器在流线内进行第一次测量。 该方法还包括基于第一测量值估计流体的饱和压力，以及基于在泵送流体的第二阶段期间使用至少一个传感器进行的第二测量产生的饱和压力模型，并且操作 泵保持流量线中的流体压力大于估计的饱和压力。
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