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    Method for characterization of hydrocarbon reservoirs
    1.
    发明授权
    Method for characterization of hydrocarbon reservoirs 有权

    公开(公告)号：US11280191B2

    公开(公告)日：2022-03-22

    申请号：US14373019

    申请日：2013-01-17

    Applicant: Schlumberger Technology Corporation

    Inventor： Youxiang Zuo ,  Oliver C. Mullins ,  Francois Xavier Dubost ,  Cosan Ayan ,  Wael Abdallah ,  Andrew E. Pomerantz ,  Dingan Zhang

    IPC: E21B49/08 ,  E21B49/00 ,  E21B49/02

    Abstract: A methodology that performs fluid sampling within a wellbore traversing a reservoir and fluid analysis on the fluid sample(s) to determine properties (including asphaltene concentration) of the fluid sample(s). At least one model is used to predict asphaltene concentration as a function of location in the reservoir. The predicted asphaltene concentrations are compared with corresponding concentrations measured by the fluid analysis to identify if the asphaltene of the fluid sample(s) corresponds to a particular asphaltene type (e.g., asphaltene clusters common in heavy oil). If so, a viscosity model is used to derive viscosity of the reservoir fluids as a function of location in the reservoir. The viscosity model allows for gradients in the viscosity of the reservoir fluids as a function of depth. The results of the viscosity model (and/or parts thereof) can be used in reservoir understanding workflows and in reservoir simulation.

    Automatic fluid coding and hydraulic zone determination
    2.
    发明授权
    Automatic fluid coding and hydraulic zone determination 有权

    公开(公告)号：US10444402B2

    公开(公告)日：2019-10-15

    申请号：US13901844

    申请日：2013-05-24

    Applicant: Schlumberger Technology Corporation

    Inventor： Francois Dubost ,  Yannick Guyomar ,  Olivier Marché ,  Cosan Ayan ,  Florent d'Halluin ,  Sylvain Wlodarczyk

    IPC: G01V11/00 ,  G06F17/18 ,  E21B49/00

    Abstract: Systems, methods, and media for processing formation pressure test data are provided. The method includes determining using a processor, a plurality of regressions for measurements of the formation pressure test data, and determining that two or more of the plurality of regressions represent a fluid code. The method also includes combining the two or more of the plurality of regressions representing the fluid code to generate a first fluid-type regression, and combining two or more other ones of the plurality of regressions representing a second fluid code to generate a second fluid-type regression. The method further includes determining that the first fluid-type regression and the second fluid-type regression are in a first hydraulic zone, and calculating a location of a boundary between the first fluid-type regression and the second fluid-type regression by extrapolating the first and second fluid-type regressions to a point of intersection therebetween.

    Systems and Methods for Sample Characterization
    4.
    发明申请
    Systems and Methods for Sample Characterization 有权
    样品表征的系统和方法

    公开(公告)号：US20160091389A1

    公开(公告)日：2016-03-31

    申请号：US14861925

    申请日：2015-09-22

    Applicant: Schlumberger Technology Corporation

    Inventor： Youxiang Zuo ,  Vinay K. Mishra ,  Hadrien Dumont ,  Adriaan Gisolf ,  Christopher Babin ,  Cosan Ayan ,  Beatriz E. Barbosa

    IPC: G01M3/32 ,  E21B49/08

    CPC classification number: G01M3/3272 ,  E21B49/082 ,  E21B49/10

    Abstract: The present disclosure relates to systems and methods for determining an integrity of a sample chamber. In certain embodiments, formation fluid is collected from a subterranean formation within a sample chamber disposed in a downhole tool, the downhole tool is withdrawn from a wellbore, an estimated surface pressure of the collected formation fluid is determined, the estimated surface pressure of the collected formation fluid is compared with an actual surface pressure of the sample chamber, and the integrity of the sample chamber is determined based on the comparison of the estimated surface pressure and the actual surface pressure.

    Abstract translation: 本公开涉及用于确定样品室的完整性的系统和方法。 在某些实施例中，地层流体从设置在井下工具中的样品室内的地层收集，井下工具从井筒中取出，确定所收集的地层流体的估计表面压力， 将地层流体与样品室的实际表面压力进行比较，并且基于估计的表面压力和实际表面压力的比较来确定样品室的完整性。

    Formation sampling methods and systems
    7.
    发明授权
    Formation sampling methods and systems 有权

    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

    IPC: E21B49/08 ,  E21B49/10 ,  G01N33/24 ,  G01N21/31 ,  G01N21/94

    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.

    Cleanup model parameterization, approximation, and sensitivity
    8.
    发明授权
    Cleanup model parameterization, approximation, and sensitivity 有权

    公开(公告)号：US10352162B2

    公开(公告)日：2019-07-16

    申请号：US15005531

    申请日：2016-01-25

    Applicant: Schlumberger Technology Corporation

    Inventor： Morten Kristensen ,  Cosan Ayan ,  Ryan Sangjun Lee ,  Nikita Chugunov

    IPC: E21B49/10

    Abstract: Methods and systems for generating and utilizing a proxy model that generates a pumping parameter as a function of contamination. The pumping parameter is descriptive of a pumpout time or volume of fluid to be obtained from a formation by a downhole sampling tool positioned in a wellbore extending into the formation. The contamination is a percentage of the fluid obtained by the downhole sampling tool that is not native to the formation. The proxy model is based on a true model that utilizes true model input parameters that include the pumping parameter, formation parameters descriptive of the formation, and a filtrate parameter descriptive of a drilling fluid utilized to form the wellbore. The output of the true model is the contamination as a function of the pumping parameter. The proxy model utilizes proxy model input parameters each related to one or more of the true model input parameters.

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