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公开(公告)号：US20220381098A1
公开(公告)日：2022-12-01
申请号：US17818042
申请日：2022-08-08
Applicant: Schlumberger Technology Corporation
Inventor： Bo Yang , Kai Hsu , Deopaul Dindial
IPC: E21B23/06 , E21B47/06 , E21B33/127
Abstract: The disclosure provides for a method for setting an inflatable packer. The method includes positioning an inflatable packer within a borehole, and pumping fluid into an inflatable element of the inflatable packer using a pump that is driven by a motor. The method includes measuring pressure of the inflatable element, determining a derivative of the measured pressure with respect to time, and determining onset of restraining of the inflatable element has occurred. Upon or after determining the onset of restraining, the method includes turning off the motor or slowing down an rpm of the motor. The disclosure also provides for a system, including a computer readable medium with processor-executable instructions stored thereon that are configured to instruct a processor to execute a pressure control algorithm to control a speed of the motor in response to pressure measurement data from the pressure sensor.
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公开(公告)号：US11125081B2
公开(公告)日：2021-09-21
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
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：US20200318477A1
公开(公告)日：2020-10-08
申请号：US16838718
申请日：2020-04-02
Applicant: Schlumberger Technology Corporation
Inventor： Thomas Pfeiffer , Ashers Partouche , Kai Hsu , Simon Edmundson
Abstract: This disclosure relates to a separating a fluid having multiple phases during formation testing. For example, certain embodiments of the present disclosure relate to receiving contaminated formation fluid on a first flow line and separating a contamination (e.g., mud filtrate) from the formation fluid by diverting the relatively heavier and/or denser fluid (e.g., the mud filtrate) downward through a second flow line and diverting the relatively lighter and/or less dense fluid upward through a third flow line. In some embodiments, the third flow line is generally oriented upwards at a height that may facilitate the separation of the heavier fluid from the relatively lighter fluid based on gravity and/or pumps.
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公开(公告)号：US10352160B2
公开(公告)日：2019-07-16
申请号：US14538403
申请日：2014-11-11
Applicant: Schlumberger Technology Corporation
Inventor： Julian Pop , Kentaro Indo , Kai Hsu
IPC: E21B49/08
Abstract: According to certain embodiments, formation fluid properties, such as gas-oil ratio (GOR), formation volume factor (FVF), and density, may be measured at multiple times during sampling. In one embodiment, data representing the measured properties is analyzed and a characteristic of interest is determined through extrapolation from the analyzed data. Various other methods and systems are also disclosed.
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公开(公告)号：US10087741B2
公开(公告)日：2018-10-02
申请号：US14755198
申请日：2015-06-30
Applicant: Schlumberger Technology Corporation
Inventor： Lei Chen , Kent David Harms , Kai Hsu
Abstract: Systems, methods, and devices for predicting pump performance in a downhole tool are provided. A pump performance predictor may receive inputs and generate outputs that predict the performance of a pump of a pumpout module of a downhole tool. The pump performance predictor may calculate and output a set of first predictions that include, for example, the minimum alternator voltage of a power module used to power the electronics of the pumpout module, the maximum pump flowrate, the pumpout performance, and the achievable formation mobility. The pump performance predictor may also calculate and output a set of second predictions that may include, for example, a pump volume efficiency, a pressure profile in a flowline, the number of strokes to fill a sampling bottle, and the time to fill the sampling bottle.
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Patent Agency Ranking
公开(公告)号：US20180181700A1
公开(公告)日：2018-06-28
申请号：US15392615
申请日：2016-12-28
Applicant: Schlumberger Technology Corporation
Inventor： Kai Hsu , Scott C. Cook , Daniel Schulz , Gregory Au , Samuel P. Subbarao , Abhishek Agarwal , Ashers Partouche
Abstract: Techniques for improving implementation of a downhole tool string to be deployed in a borehole formed in a sub-surface formation. In some embodiments, a design device determines a model that describes expected relationship between properties of the downhole tool string, the borehole, the sub-surface formation, and mud cake expected to be formed in the borehole; determines calibration locations along the borehole based on properties of the borehole; determines candidate spacer configurations based on contact force expected to occur at contact points between the downhole tool string and the mud cake when deployed with each of the candidate spacer configuration via the model; and determines a final spacer configuration to be used to attach one or more spacers along the downhole tool string based on expected head tension to move the downhole tool string when deployed in the borehole with each of the candidate spacer configurations via the model.
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公开(公告)号：US20160032721A1
公开(公告)日：2016-02-04
申请号：US14884623
申请日：2015-10-15
Applicant: Schlumberger Technology Corporation
Inventor： Kai Hsu , Kentaro Indo , Julian Pop
IPC: E21B49/08
CPC classification number: E21B49/081 , E21B49/088 , E21B49/10 , G01N21/534 , G01N29/032 , G01N29/348
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.
Abstract translation: 在第一时间获得与流过井下地层流体取样装置的地层流体相关联的第一光谱数据，然后在第一时间之后的第二时间获得与第二次光谱数据相关联的第二光谱数据 地层流体流过井下地层流体取样装置。 然后，基于第一和第二光谱数据，以及流过井下地层流体取样装置的地层流体内的波长依赖散射强度，确定流过井下地层流体取样装置的地层流体内的与波长无关的散射强度 基于第一和第二光谱数据确定。
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公开(公告)号：US09243493B2
公开(公告)日：2016-01-26
申请号：US13886605
申请日：2013-05-03
Applicant: Schlumberger Technology Corporation
Inventor： Kai Hsu , Kentaro Indo , Oliver C. Mullins , Peter S. Hegeman
CPC classification number: E21B49/087 , E21B47/102 , E21B49/08 , E21B2049/085
Abstract: A system and method for determining at least one fluid characteristic of a downhole fluid sample using a downhole tool are provided. In one example, the method includes performing a calibration process that correlates optical and density sensor measurements of a fluid sample in a downhole tool at a plurality of pressures. The calibration process is performed while the fluid sample is not being agitated. At least one unknown value of a density calculation is determined based on the correlated optical sensor measurements and density sensor measurements. A second optical sensor measurement of the fluid sample is obtained while the fluid sample is being agitated. A density of the fluid sample is calculated based on the second optical sensor measurement and the at least one unknown value.
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公开(公告)号：US09115567B2
公开(公告)日：2015-08-25
申请号：US13676766
申请日：2012-11-14
Applicant: Schlumberger Technology Corporation
Inventor： Kai Hsu , Kent David Harms , Steven G. Villareal
CPC classification number: E21B47/0007 , E21B49/081
Abstract: A downhole tool includes a pump to facilitate a flow of sampling fluid through the downhole tool. The sampling fluid flows from an inlet of the downhole tool toward an outlet of the downhole tool or to a sampling chamber. The downhole tool also includes a sensor located in the pump. The sensor facilitates a calculation of a pumping efficiency of the downhole tool.
Abstract translation: 井下工具包括泵，以促进采样流体通过井下工具的流动。 采样流体从井下工具的入口流到井下工具的出口或者到采样室。 井下工具还包括位于泵中的传感器。 该传感器便于计算井下工具的泵送效率。
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公开(公告)号：US20150176407A1
公开(公告)日：2015-06-25
申请号：US14135377
申请日：2013-12-19
Applicant: Schlumberger Technology Corporation
Inventor： Kentaro Indo , Kai Hsu , Julian Pop
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.
Abstract translation: 提供了测量原油沥青质含量的方法。 在一个实施方案中，该方法包括测量孔内的活原油的光密度并基于测量的光密度计算活原油的地层容积系数。 该方法还包括基于测量的光密度和活原油的计算的地层容积系数来确定活的原油的沥青质含量。 还公开了附加的方法，系统和装置。
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