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    Downhole Real-Time Filtrate Contamination Monitoring
    12.
    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.

    Data extraction for OBM contamination monitoring
    13.
    发明授权
    Data extraction for OBM contamination monitoring 有权

    公开(公告)号：US10294785B2

    公开(公告)日：2019-05-21

    申请号：US14975700

    申请日：2015-12-18

    Applicant: Schlumberger Technology Corporation

    Inventor： Kang Wang ,  Ryan Sangjun Lee ,  Youxiang Zuo ,  Sai Venkatakrishnan ,  XiaoWei Sheng ,  Suchart Chokthanyawat ,  Lei Jiang ,  Lixiang Sun

    IPC: E21B49/08 ,  E21B49/10 ,  E21B49/00

    Abstract: Disclosed are methods and apparatus obtaining in-situ, real-time data associated with a sample stream obtained by a downhole sampling apparatus disposed in a borehole that extends into a subterranean formation. The obtained data includes multiple fluid properties of the sample stream. The sample stream includes native formation fluid from the subterranean formation and filtrate contamination resulting from formation of the borehole in the subterranean formation. The obtained data is filtered to remove outliers. The filtered data is fit to each of a plurality of models each characterizing a corresponding one of the fluid properties as a function of a pumpout volume or time of the sample stream. Based on the fitted data, a start of a developed flow regime of the native formation fluid within the subterranean formation surrounding the borehole is identified.

    Tar Mat Formation Prediction in Late-Charge Reservoirs
    15.
    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：US20160047208A1

    公开(公告)日：2016-02-18

    申请号：US14927305

    申请日：2015-10-29

    Applicant: Schlumberger Technology Corporation

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

    IPC: E21B43/00 ,  G06F17/10 ,  E21B49/08

    CPC classification number: E21B43/00 ,  E21B49/088 ,  E21B2049/085 ,  G06F17/10

    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/或由其获得的流体相关的数据。 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。

    Downhole Real-Time Filtrate Contamination Monitoring
    16.
    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。

    Downhole real-time filtrate contamination monitoring
    18.
    发明授权
    Downhole real-time filtrate contamination monitoring 有权

    公开(公告)号：US10738606B2

    公开(公告)日：2020-08-11

    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.

    Flow regime identification with filtrate contamination monitoring
    19.
    发明授权
    Flow regime identification with filtrate contamination monitoring 有权

    公开(公告)号：US10577928B2

    公开(公告)日：2020-03-03

    申请号：US14867262

    申请日：2015-09-28

    Applicant: Schlumberger Technology Corporation

    Inventor： Kang Wang ,  Youxiang Zuo ,  Ryan Sangjun Lee ,  Adriaan Gisolf

    IPC: E21B49/08

    Abstract: A method includes operating a downhole acquisition tool in a wellbore in a geological formation. The wellbore or the geological formation, or both contains a fluid that includes a native reservoir fluid of the geological formation and a contaminant. The method also includes receiving a portion of the fluid into the downhole acquisition tool, measuring a fluid property of the portion of the fluid using the downhole acquisition tool, and using the processor to estimate a fluid property of the native reservoir fluid based on the measured fluid property of the portion of the fluid and a regression model that may predict an asymptote of a growth curve. The asymptote corresponds to the estimated fluid property of the native formation fluid, and the regression model includes a geometric fitting model other than a power-law model.

    Applying shrinkage factor to real-time OBM filtrate contamination monitoring
    20.
    发明授权
    Applying shrinkage factor to real-time OBM filtrate contamination monitoring 有权

    公开(公告)号：US10352161B2

    公开(公告)日：2019-07-16

    申请号：US14975704

    申请日：2015-12-18

    Applicant: Schlumberger Technology Corporation

    Inventor： Youxiang Zuo ,  Adriaan Gisolf ,  Kang Wang ,  Ryan Sangjun Lee

    IPC: E21B49/10 ,  E21B47/12 ,  E21B49/08

    Abstract: A downhole tool operable to pump a volume of contaminated fluid from a subterranean formation during an elapsed pumping time while obtaining in-situ, real-time data associated with the contaminated fluid. The contaminated fluid includes native formation fluid and oil-based mud (OBM) filtrate. A shrinkage factor of the contaminated fluid is determined based on the in-situ, real-time data. The contaminated fluid shrinkage factor is fit relative to pumped volume or pumping time to obtain a function relating the shrinkage factor with pumped volume or elapsed pumping time. A shrinkage factor of the native formation fluid is determined based on the function. A shrinkage factor of the OBM filtrate is also determined. OBM filtrate volume percentage is determined based on the shrinkage factor of the native formation fluid and the shrinkage factor of the OBM filtrate.

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