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11.发明申请公开(公告)号：US20200378249A1
公开(公告)日：2020-12-03
申请号：US16995436
申请日：2020-08-17
Applicant: Schlumberger Technology Corporation
Inventor： Hadrien Dumont , Vinay K. Mishra , German Garcia , Li Chen , Thomas Pfeiffer , Soraya S. Betancourt Pocaterra , Jerimiah Forsythe , Andrew Emil Pomerantz , Youxiang Zuo , Oliver C. Mullins
Abstract: Systems and methods for identifying a likelihood that a reservoir of a geological formation received a secondary charge of hydrocarbons of relatively very different thermal maturity of composition are provided. One method includes positioning a downhole acquisition tool in a wellbore in a geological formation and testing one or more fluid properties of the formation fluid. Data processing circuitry may identify whether a relationship of the one or more fluid properties exceeds a first threshold that indicates likely asphaltene instability. When this is the case, data processing circuitry may be used to model the geological formation using a realization scenario in which multiple charges of hydrocarbons of substantially different thermal maturity or substantially different composition, or both, filled a reservoir of the geological formation over geologic time.
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12.发明授权公开(公告)号：US10746018B2
公开(公告)日：2020-08-18
申请号：US15599533
申请日：2017-05-19
Applicant: Schlumberger Technology Corporation
Inventor： Hadrien Dumont , Vinay K. Mishra , German Garcia , Li Chen , Thomas Pfeiffer , Soraya S. Betancourt Pocaterra , Jerimiah Forsythe , Andrew Emil Pomerantz , Youxiang Zuo , Oliver C. Mullins
Abstract: Systems and methods for identifying a likelihood that a reservoir of a geological formation received a secondary charge of hydrocarbons of relatively very different thermal maturity of composition are provided. One method includes positioning a downhole acquisition tool in a wellbore in a geological formation and testing one or more fluid properties of the formation fluid. Data processing circuitry may identify whether a relationship of the one or more fluid properties exceeds a first threshold that indicates likely asphaltene instability. When this is the case, data processing circuitry may be used to model the geological formation using a realization scenario in which multiple charges of hydrocarbons of substantially different thermal maturity or substantially different composition, or both, filled a reservoir of the geological formation over geologic time.
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公开(公告)号：US10533415B2
公开(公告)日：2020-01-14
申请号：US15183090
申请日：2016-06-15
Applicant: Schlumberger Technology Corporation
Inventor： German Garcia , Hadrien Dumont , Vinay K. Mishra , Li Chen , Abhishek Agarwal , Cosan Ayan
Abstract: A formation sampling method includes disposing a downhole tool comprising a packer and an expandable probe within a wellbore. The method also includes performing pressure transient testing by setting the expandable packer and the probe to engage a wall of the wellbore and measuring a pressure response at the expandable packer and the probe while withdrawing formation fluid into the downhole tool through the expandable packer. The method further includes monitoring a contamination level of the formation fluid during the pressure transient testing, and performing formation sampling with the probe in response to determining that the monitored contamination level meets a predetermined threshold.
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公开(公告)号：US20170138921A1
公开(公告)日：2017-05-18
申请号：US15419137
申请日：2017-01-30
Applicant: Schlumberger Technology Corporation
Inventor： Youxiang Zuo , Adriaan Gisolf , Li Chen
CPC classification number: G01N33/2841 , E21B41/005 , E21B49/10 , G01N33/2835
Abstract: Methods and apparatus for operating a downhole tool within a wellbore adjacent a subterranean formation to pump contaminated fluid from the formation into the downhole tool while measuring first and second fluid properties of the contaminated fluid. The contaminated fluid comprises native fluid from the formation and a contaminant. The downhole tool is in communication with surface equipment located at surface. The downhole tool and/or surface equipment is operated to estimate a formation volume factor of the contaminated fluid based on at least one of the first and second fluid properties of the contaminated fluid. A linear relationship is then estimated between the first fluid property and a function that relates the first fluid property to the second fluid property and the estimated formation volume factor of the contaminated fluid. A fluid property of the contaminant is then estimated based on the estimated linear relationship.
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15.发明公开公开(公告)号：US20240151139A1
公开(公告)日：2024-05-09
申请号：US18406875
申请日：2024-01-08
Applicant: Schlumberger Technology Corporation
Inventor： Hadrien Dumont , Vinay K. Mishra , German Garcia , Li Chen , Thomas Pfeiffer , Soraya S. Betancourt Pocaterra , Jerimiah Forsythe , Andrew Emil Pomerantz , Youxiang Zuo , Oliver C. Mullins
Abstract: Systems and methods for identifying a likelihood that a reservoir of a geological formation received a secondary charge of hydrocarbons of relatively very different thermal maturity of composition are provided. One method includes positioning a downhole acquisition tool in a wellbore in a geological formation and testing one or more fluid properties of the formation fluid. Data processing circuitry may identify whether a relationship of the one or more fluid properties exceeds a first threshold that indicates likely asphaltene instability. When this is the case, data processing circuitry may be used to model the geological formation using a realization scenario in which multiple charges of hydrocarbons of substantially different thermal maturity or substantially different composition, or both, filled a reservoir of the geological formation over geologic time.
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Patent Agency Ranking
16.发明授权公开(公告)号：US12123863B2
公开(公告)日：2024-10-22
申请号：US18043616
申请日：2021-09-02
Applicant: Schlumberger Technology Corporation
Inventor： Melanie Jensen , Lalitha Venkataramanan , Sandip Bose , Peter Tilke , Oliver C. Mullins , Li Chen , Denise E. Freed
CPC classification number: G01N33/2823 , E21B49/081
Abstract: Processes and systems for determining asphaltene equilibrium between two or more downhole geographic locations are provided. In some embodiments, the process can include measuring one or more fluid properties of a plurality of fluid samples at varying downhole depths to generate a one or more downhole fluid analysis measurement data points; selecting an asphaltene diameter distribution based on prior knowledge; utilizing the asphaltene diameter distribution to fit a first set of one or more equation of state curves to the one or more downhole fluid analysis measurement data points to define a first model of fitted equation of state curves and to determine one or more posterior distributions of asphaltene diameters; and determining if the varying downhole depths are in an asphaltene equilibrium by determining whether the one or more posterior distributions of asphaltene diameters is consistent with that of asphaltenes in equilibrium.
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公开(公告)号：US10295522B2
公开(公告)日：2019-05-21
申请号：US15419137
申请日：2017-01-30
Applicant: Schlumberger Technology Corporation
Inventor： Youxiang Zuo , Adriaan Gisolf , Li Chen
Abstract: Methods and apparatus for operating a downhole tool within a wellbore adjacent a subterranean formation to pump contaminated fluid from the formation into the downhole tool while measuring first and second fluid properties of the contaminated fluid. The contaminated fluid comprises native fluid from the formation and a contaminant. The downhole tool is in communication with surface equipment located at surface. The downhole tool and/or surface equipment is operated to estimate a formation volume factor of the contaminated fluid based on at least one of the first and second fluid properties of the contaminated fluid. A linear relationship is then estimated between the first fluid property and a function that relates the first fluid property to the second fluid property and the estimated formation volume factor of the contaminated fluid. A fluid property of the contaminant is then estimated based on the estimated linear relationship.
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公开(公告)号：US20180216458A1
公开(公告)日：2018-08-02
申请号：US15887049
申请日：2018-02-02
Applicant: Schlumberger Technology Corporation
Inventor： German Garcia , Hadrien Dumont , Christopher Albert Babin , Li Chen , Vinay K. Mishra
Abstract: Apparatus and methods for performing downhole testing. Example apparatus include a downhole tool string for conveying within a wellbore, the downhole tool string comprising an anchor device, a testing device, and a linear or rotary actuator. The anchor device maintains a portion of the downhole tool string in a predetermined position within the wellbore. The testing device is operable to receive a downhole sample from or test a subterranean formation surrounding the wellbore. The linear actuator is connected between the anchor device and testing device, and moves the testing device relative to the anchor device.
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公开(公告)号：US20170284197A1
公开(公告)日：2017-10-05
申请号：US15087770
申请日：2016-03-31
Applicant: Schlumberger Technology Corporation
Inventor： Hadrien Dumont , Christopher Harrison , Youxiang Zuo , Christopher Albert Babin , Li Chen , Vinay K. Mishra , German Garcia , Abhishek Agarwal , Matthew T. Sullivan
IPC: E21B49/08
CPC classification number: E21B49/10 , E21B47/065 , E21B2049/085
Abstract: Methods for obtaining in-situ, multi-temperature measurements of fluid properties, such as saturation pressure and asphaltene onset pressure, are provided. In one example, a sample of formation fluid is obtained using a downhole acquisition tool positioned in a wellbore in a geological formation. The downhole acquisition tool may be stationed at a first depth in the wellbore that has an ambient first temperature. While stationed at the first depth, the downhole acquisition tool may test a first fluid property of the sample to obtain a first measurement point at approximately the first temperature. The downhole acquisition tool may be moved to a subsequent station at a new depth with an ambient second temperature, and another measurement point obtained at approximately the second temperature. From the measurement points, a temperature-dependent relationship of the first fluid property of the first formation fluid may be determined.
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公开(公告)号：US20150308261A1
公开(公告)日：2015-10-29
申请号：US14263893
申请日：2014-04-28
Applicant: Schlumberger Technology Corporation
Inventor： Youxiang Zuo , Adriaan Gisolf , Kai Hsu , Li Chen , Beatriz Barbosa
Abstract: A downhole tool is operated to pump fluid from a subterranean formation while obtaining fluid property measurements pertaining to the pumped fluid. The downhole tool is in communication with surface equipment located at the wellsite surface. The downhole tool and/or surface equipment is operated to estimate a first linear, exponential, logarithmic, and/or other relationship between compressibility and pressure of the pumped fluid based on the fluid property measurements. The downhole tool and/or surface equipment may also be operated to estimate a second linear, exponential, logarithmic, and/or other relationship between formation volume factor and pressure of the pumped fluid based on the first relationship. The downhole tool and/or surface equipment may also be operated to measure and correct optical density of the pumped fluid based on the first relationship.
Abstract translation: 操作井下工具以从地层中泵送流体，同时获得与泵送流体相关的流体性质测量。 井下工具与位于井场表面的地面设备连通。 操作井下工具和/或表面设备以基于流体性质测量来估计泵送流体的压缩性和压力之间的第一线性，指数，对数和/或其他关系。 井下工具和/或表面设备也可以被操作以基于第一关系来估计地层容积因子和泵送流体的压力之间的第二线性，指数，对数和/或其他关系。 井下工具和/或表面设备也可以被操作以基于第一关系来测量和校正泵送流体的光密度。
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