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    Asphaltene phase instability analysis in gas charges into oil reservoirs
    1.
    发明授权
    Asphaltene phase instability analysis in gas charges into oil reservoirs 有权

    公开(公告)号：US11188689B2

    公开(公告)日：2021-11-30

    申请号：US15196128

    申请日：2016-06-29

    Applicant: Schlumberger Technology Corporation

    Inventor： Youxiang Zuo ,  Shu Pan ,  Yi Chen ,  Kang Wang ,  Oliver C. Mullins

    IPC: G06G7/48 ,  G06F30/20 ,  E21B49/08 ,  G06F111/10

    Abstract: A method includes placing a downhole acquisition tool in a wellbore in a geological formation containing a reservoir fluid. The method includes performing downhole fluid analysis using the downhole acquisition tool to determine at least one measurement of the reservoir fluid. The method includes using a processor to estimate at least one fluid component property by using an equation of state based at least in part on the at least one measurement of the reservoir fluid and to simulate a diffusion process using a diffusion model that takes into account the at least one estimated fluid property to generate a composition path. The method includes using a processor to estimate one or more phase envelopes based in part on the at least one fluid property and compare the one or more phase envelopes with the composition path. The method includes outputting a visualization identify potential areas of asphaltene instability.

    Downhole real-time filtrate contamination monitoring
    4.
    发明授权
    Downhole real-time filtrate contamination monitoring 有权

    公开(公告)号：US10316656B2

    公开(公告)日：2019-06-11

    申请号：US14697382

    申请日：2015-04-27

    Applicant: Schlumberger Technology Corporation

    Inventor： Youxiang Zuo ,  Kang Wang ,  Adriaan Gisolf ,  Ryan Sangjun Lee ,  Oliver C. Mullins ,  Shu Pan

    IPC: E21B49/08 ,  G01N33/28

    Abstract: A method includes identifying linearly behaving data within obtained data associated with fluid obtained from a subterranean formation. Shrinkage factor is determined based on the linearly behaving data. A function relating GOR data of the obtained fluid with the determined shrinkage factor is determined. A first linear relationship between optical density (OD) data of the obtained fluid and the function is determined. A second linear relationship between density data of the obtained fluid and the function is determined. An oil-based mud (OBM) filtrate contamination property of OBM filtrate within the obtained fluid based on the first linear relationship is determined. A native formation property of native formation fluid within the obtained fluid based on the second linear relationship is determined. A volume fraction of OBM filtrate contamination within the obtained fluid based on the OBM filtrate contamination property and the native formation property is estimated.

    RESERVOIR FLUID GEODYNAMICS SYSTEM AND METHOD
    5.
    发明申请
    RESERVOIR FLUID GEODYNAMICS SYSTEM AND METHOD 审中-公开

    公开(公告)号：US20180223657A1

    公开(公告)日：2018-08-09

    申请号：US15428534

    申请日：2017-02-09

    Applicant: Schlumberger Technology Corporation

    Inventor： Youxiang Zuo ,  Shu Pan ,  Kang Wang ,  Oliver Mullins ,  Ashers Partouche

    IPC: E21B49/08 ,  E21B47/06 ,  E21B49/10 ,  G01V99/00

    CPC classification number: E21B49/082 ,  E21B2049/085 ,  G01V99/005 ,  G01V2210/624 ,  G01V2210/663

    Abstract: A method includes placing a downhole acquisition tool in a wellbore in a geological formation within a hydrocarbon reservoir. The wellbore or the geological formation, or both, contain a reservoir fluid. The method also includes performing downhole fluid analysis using the downhole acquisition tool in the wellbore to determine at least one measurement associated with the reservoir fluid and using a processor to: estimate at least one fluid component property by using an equation of state based at least in part on at least one measurement associated with the reservoir fluid and simulate a diffusion process using a diffusive model that takes into account the at least one estimated fluid property. The diffusive model accounts for gravitational diffusion of at least one or more components in the reservoir fluid. The method also includes using the processor to estimate one or more reservoir fluid geodynamic processes based at least in part on the at least one fluid property; compare the estimated one or more reservoir fluid geodynamic processes with the at least one measurement associated with the reservoir fluid; and output one or more reservoir fluid geodynamic processes corresponding to the at least one measurement associated with the reservoir fluid.

    Tar Mat Formation Prediction in Late-Charge Reservoirs
    6.
    发明申请
    Tar Mat Formation Prediction in Late-Charge Reservoirs 审中-公开
    晚期充填油藏焦油层形成预测

    公开(公告)号：US20170016321A1

    公开(公告)日：2017-01-19

    申请号：US15279828

    申请日：2016-09-29

    Applicant: Schlumberger Technology Corporation

    Inventor： Shu Pan ,  Youxiang Zuo ,  Yi Chen ,  Kang Wang ,  Oliver C. Mullins

    IPC: E21B49/10

    CPC classification number: E21B49/10 ,  E21B43/00 ,  E21B49/088 ,  E21B2049/085 ,  G01V7/00 ,  G01V11/00 ,  G01V2210/6165 ,  G01V2210/644 ,  G01V2210/663

    Abstract: A downhole tool, surface equipment, and/or remote equipment are utilized to obtain data associated with a subterranean hydrocarbon reservoir, fluid contained therein, and/or fluid obtained therefrom. At least one condition indicating that a density inversion exists in the fluid contained in the reservoir is identified from the data. Molecular sizes of fluid components contained within the reservoir are estimated from the data. A model of the density inversion is generated based on the data and molecular sizes. The density inversion model is utilized to estimate the density inversion amount and depth and time elapsed since the density inversion began to form within the reservoir. A model of a gravity-induced current of the density inversion is generated based on the data and the density inversion amount, depth, and elapsed time.

    Abstract translation: 使用井下工具，地面设备和/或远程设备来获得与地下烃储存器，其中容纳的流体和/或从其获得的流体相关联的数据。 从数据中识别至少一个条件，指示存储在容器中的流体中的密度反演存在。 从数据中估计储存器中所含的流体成分的分子大小。 基于数据和分子大小生成密度反演的模型。 密度反演模型用于估计密度倒置量，深度和从储层内形成密度反演以来经过的时间。 基于数据和密度倒置量，深度和经过时间生成密度反演的重力感应电流的模型。

    System and methodology for determining phase transition properties of native reservoir fluids
    7.
    发明授权
    System and methodology for determining phase transition properties of native reservoir fluids 有权

    公开(公告)号：US11814956B2

    公开(公告)日：2023-11-14

    申请号：US16764510

    申请日：2018-11-16

    Applicant: Schlumberger Technology Corporation

    Inventor： Sophie Mansour ,  Shu Pan ,  Younes Jalali

    IPC: E21B49/08 ,  G01N33/28

    CPC classification number: E21B49/0875 ,  E21B49/081 ,  G01N33/2823

    Abstract: A technique facilitates fluid analysis in situ at a downhole location. According to an embodiment, a sample of fluid, e.g. oil, is obtained from a reservoir at the downhole location in a borehole. A downhole sampling system is used to determine contamination of the sample of fluid and to determine other selected characteristics of the sample. The data obtained is then processed to determine a true phase transition property of a native fluid in the sample of fluid. The sample analysis may be performed at selected stations along the borehole during, for example, a well cleanup operation. The immediate analysis of fluid samples downhole facilitates rapid development of an understanding of fluid characteristics in the reservoir, thus enabling an improved oil recovery strategy.

    DIGITAL SEAWATER PROCESSING
    8.
    发明申请
    DIGITAL SEAWATER PROCESSING 有权

    公开(公告)号：US20220161193A1

    公开(公告)日：2022-05-26

    申请号：US17602298

    申请日：2020-04-23

    Applicant: Schlumberger Technology Corporation

    Inventor： Shu Pan ,  Oleg O. Medvedev ,  Robert Charles William Weston ,  Marcus Suzart Ungaretti Rossi

    IPC: B01D61/12 ,  C02F1/44 ,  B01D65/02

    Abstract: Methods of operating membrane processes, such as seawater purification processes, are described herein. The methods generally include flowing seawater into a membrane purification process; recovering purified seawater and concentrated seawater from the membrane purification process; sensing operating parameters of the membrane purification process; determining a state of the membrane purification process from the operating parameters using a physical model; using a statistical model to resolve a time dependence of the state of the membrane purification process; using a recursive statistical process to update the statistical model; using the updated statistical model to predict a future state of the membrane purification process; comparing the predicted future state of the membrane purification process to a threshold state; and predicting a remaining time before the membrane purification process reaches the threshold state.

    Downhole Real-Time Filtrate Contamination Monitoring
    9.
    发明申请
    Downhole Real-Time Filtrate Contamination Monitoring 审中-公开

    公开(公告)号：US20190264560A1

    公开(公告)日：2019-08-29

    申请号：US16411845

    申请日：2019-05-14

    Applicant: Schlumberger Technology Corporation

    Inventor： Youxiang Zuo ,  Kang Wang ,  Adriaan Gisolf ,  Ryan Sangjun Lee ,  Oliver C. Mullins ,  Shu Pan

    IPC: E21B49/08 ,  G01N33/28

    Abstract: A method includes identifying linearly behaving data within obtained data associated with fluid obtained from a subterranean formation. Shrinkage factor is determined based on the linearly behaving data. A function relating GOR data of the obtained fluid with the determined shrinkage factor is determined. A first linear relationship between optical density (OD) data of the obtained fluid and the function is determined. A second linear relationship between density data of the obtained fluid and the function is determined. An oil-based mud (OBM) filtrate contamination property of OBM filtrate within the obtained fluid based on the first linear relationship is determined. A native formation property of native formation fluid within the obtained fluid based on the second linear relationship is determined. A volume fraction of OBM filtrate contamination within the obtained fluid based on the OBM filtrate contamination property and the native formation property is estimated.

    Downhole Real-Time Filtrate Contamination Monitoring
    10.
    发明申请
    Downhole Real-Time Filtrate Contamination Monitoring 审中-公开
    井下实时滤液污染监测

    公开(公告)号：US20150308264A1

    公开(公告)日：2015-10-29

    申请号：US14697382

    申请日：2015-04-27

    Applicant: Schlumberger Technology Corporation

    Inventor： Youxiang Zuo ,  Kang Wang ,  Adriaan Gisolf ,  Ryan Sangjun Lee ,  Oliver C. Mullins ,  Shu Pan

    IPC: E21B49/08 ,  G01N33/28

    CPC classification number: E21B49/088 ,  E21B2049/085 ,  G01N33/2841

    Abstract: A method includes identifying linearly behaving data within obtained data associated with fluid obtained from a subterranean formation. Shrinkage factor is determined based on the linearly behaving data. A function relating GOR data of the obtained fluid with the determined shrinkage factor is determined. A first linear relationship between optical density (OD) data of the obtained fluid and the function is determined. A second linear relationship between density data of the obtained fluid and the function is determined. An oil-based mud (OBM) filtrate contamination property of OBM filtrate within the obtained fluid based on the first linear relationship is determined. A native formation property of native formation fluid within the obtained fluid based on the second linear relationship is determined. A volume fraction of OBM filtrate contamination within the obtained fluid based on the OBM filtrate contamination property and the native formation property is estimated.

    Abstract translation: 一种方法包括识别与从地下地层获得的流体相关联的获得的数据内的线性行为数据。 基于线性行为数据确定收缩系数。 确定获得的流体的GOR数据与确定的收缩率相关联的函数。 确定获得的流体的光密度（OD）数据与函数之间的第一线性关系。 确定获得的流体的密度数据与函数之间的第二线性关系。 确定基于第一线性关系的所得流体中OBM滤液的油基泥浆（OBM）滤液污染特性。 确定基于第二线性关系的所获得的流体内的天然地层流体的天然地层特性。 基于OBM滤液污染特性和天然形成特性估算得到流体中OBM滤液污染物的体积分数。

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