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    Estimation of mud filtrate spectra and use in fluid analysis
    4.
    发明授权
    Estimation of mud filtrate spectra and use in fluid analysis 有权

    公开(公告)号：US09784101B2

    公开(公告)日：2017-10-10

    申请号：US14248528

    申请日：2014-04-09

    Applicant: Schlumberger Technology Corporation

    Inventor： Richard Jackson ,  Ankit Agarwal ,  Adriaan Gisolf ,  Ilaria De Santo ,  Youxiang Zuo

    IPC: E21B49/08 ,  E21B49/10

    CPC classification number: E21B49/08 ,  E21B49/10

    Abstract: A method for using an optical spectrum of mud filtrate for analysis of fluid drawn from a formation is provided. The method includes performing downhole fluid analysis of formation fluid drawn at a wellbore measurement station and determining an optical spectrum of mud filtrate in the formation fluid drawn at the wellbore measurement station. The method also includes performing downhole fluid analysis of formation fluid drawn at an additional wellbore measurement station, and performing the downhole fluid analysis of formation fluid drawn at the additional wellbore measurement station includes using the determined optical spectrum of the mud filtrate in the formation fluid previously drawn at the wellbore measurement station. Additional methods, systems, and devices are also disclosed.

    Evaluating Reservoir Oil Biodegradation
    6.
    发明申请
    Evaluating Reservoir Oil Biodegradation 审中-公开
    评估油藏油生物降解

    公开(公告)号：US20160123953A1

    公开(公告)日：2016-05-05

    申请号：US14933807

    申请日：2015-11-05

    Applicant: Schlumberger Technology Corporation

    Inventor： Youxiang Zuo ,  Oliver C. Mullins ,  Richard Jackson ,  Ankit Agarwal

    IPC: G01N33/28 ,  E21B49/08

    CPC classification number: G01N33/2888 ,  E21B49/08

    Abstract: Upper and lower asphaltene weight fractions of fluid proximate ends of an oil column are obtained based on measured OD. Upper and lower maltene partial densities are obtained based on the asphaltene weight fractions. A maltene partial density distribution is obtained utilizing the maltene partial densities and a predetermined diffusion model. An asphaltene partial density distribution is obtained based on the maltene partial density distribution and an estimated mass density gradient. An asphaltene weight percentage is obtained based on the asphaltene partial density distribution and the mass density gradient. The asphaltene weight percentage distribution is converted to an OD distribution utilizing a predetermined correlation. An optimization then reduces differences between the OD distribution and the measured OD data to within a predetermined range to refine a biodegradation time of the predetermined diffusion model. A viscosity distribution may be obtained based on the optimized OD distribution.

    Abstract translation: 基于测量的OD获得油柱近端流体的上部和下部沥青质重量分数。 基于沥青质重量分数获得上，下麦芽烯部分密度。 利用麦芽烯部分密度和预定扩散模型获得麦芽烯部分密度分布。 基于麦芽烯部分密度分布和估计质量密度梯度获得沥青质部分密度分布。 基于沥青质部分密度分布和质量密度梯度得到沥青质重量百分比。 使用预定的相关性将沥青质重量百分比分布转换为OD分布。 优化然后将OD分布和测量的OD数据之间的差异减小到预定范围内，以细化预定扩散模型的生物降解时间。 可以基于优化的OD分布获得粘度分布。

    Estimation of Mud Filtrate Spectra and Use in Fluid Analysis
    7.
    发明申请
    Estimation of Mud Filtrate Spectra and Use in Fluid Analysis 有权
    泥浆滤液的光谱估计和流体分析中的应用

    公开(公告)号：US20150292324A1

    公开(公告)日：2015-10-15

    申请号：US14248528

    申请日：2014-04-09

    Applicant: Schlumberger Technology Corporation

    Inventor： Richard Jackson ,  Ankit Agarwal ,  Adriaan Gisolf ,  Ilaria De Santo ,  Youxiang Zuo

    IPC: E21B49/08

    CPC classification number: E21B49/08 ,  E21B49/10

    Abstract: A method for using an optical spectrum of mud filtrate for analysis of fluid drawn from a formation is provided. The method includes performing downhole fluid analysis of formation fluid drawn at a wellbore measurement station and determining an optical spectrum of mud filtrate in the formation fluid drawn at the wellbore measurement station. The method also includes performing downhole fluid analysis of formation fluid drawn at an additional wellbore measurement station, and performing the downhole fluid analysis of formation fluid drawn at the additional wellbore measurement station includes using the determined optical spectrum of the mud filtrate in the formation fluid previously drawn at the wellbore measurement station. Additional methods, systems, and devices are also disclosed.

    Abstract translation: 提供了一种使用泥浆滤液光谱分析从地层抽取的流体的方法。 该方法包括对在井眼测量站处绘制的地层流体进行井下流体分析，并确定在井筒测量站处抽取的地层流体中泥浆滤液的光谱。 该方法还包括对在另外的井眼测量站处绘制的地层流体进行井下流体分析，以及对在附加井眼测量站处绘制的地层流体进行井下流体分析包括使用先前在地层流体中确定的泥浆滤液的光谱 在井眼测量站绘制。 还公开了附加的方法，系统和装置。

    Formation Tester Interval Pressure Transient Test And Apparatus
    8.
    发明申请
    Formation Tester Interval Pressure Transient Test And Apparatus 审中-公开
    地层测试仪间隔压力瞬态测试和仪器

    公开(公告)号：US20140316707A1

    公开(公告)日：2014-10-23

    申请号：US14355820

    申请日：2012-11-05

    Applicant: Schlumberger Technology Corporation

    Inventor： Prasanna Kumar Tellapaneni ,  Richard Jackson ,  Sourabh Shukla ,  Harshad Dixit

    IPC: E21B49/00 ,  G01V11/00

    CPC classification number: E21B49/00 ,  E21B49/008 ,  G01V11/002

    Abstract: A methodology for IPTT (interval pressure transient testing) design which allows estimation of the reliability of the transient tests. A normally distributed random noise is superimposed on analytical pressure profile computed for a given formation, PVT, and gauge metrology. The IPTT success in a particular environment is estimated based on the theoretical pressure derivative and noise superimposed pressure derivative. This approach is repeated for a range of rock, fluid properties, and practical limits, for a successful IPTT.

    Abstract translation: IPTT（间隔压力瞬态测试）设计的方法，可以估计瞬态测试的可靠性。 正态分布随机噪声叠加在为给定地层，PVT和量规计量计算的分析压力分布上。 基于理论压力导数和噪声叠加压力导数估计IPTT在特定环境中的成功。 对于成功的IPTT，对于一系列岩石，流体性质和实际限制重复这种方法。

    INTEGRATION OF FLUID ANALYZER MODULE MEASUREMENTS FOR QUALITY CONTROL OF FLUID SAMPLING AND PROCESSES FOR USING SAME
    9.
    发明申请
    INTEGRATION OF FLUID ANALYZER MODULE MEASUREMENTS FOR QUALITY CONTROL OF FLUID SAMPLING AND PROCESSES FOR USING SAME 有权

    公开(公告)号：US20250110050A1

    公开(公告)日：2025-04-03

    申请号：US18898774

    申请日：2024-09-27

    Applicant: Schlumberger Technology Corporation

    Inventor： Kai Hsu ,  Hua Chen ,  Richard Jackson ,  Evgeniya Deger

    IPC: G01N21/3577 ,  G01N1/14 ,  G01N21/35 ,  G01N33/28 ,  G01N35/00

    Abstract: In some embodiments, a process can include obtaining a first formation fluid sample using a sample-line of a focused fluid sampling system and obtaining a second formation fluid sample using a guard-line of the focused fluid sampling system. The process can also include measuring a first optical density spectrum of the first formation fluid sample and measuring a second optical density spectrum of the second formation fluid sample. The process can also include decolorizing the first and second optical density spectrums to produce a decolorized first spectrum and a decolorized second spectrum, respectively. The process can also include normalizing the first and second decolorized spectrums to provide a first normalized spectrum and a second normalized spectrum. The process can also include determining a difference between the first and the second normalized spectrums to provide a sampling difference and adjusting a fluid sampling operation based on the sampling difference.

    Evaluating reservoir oil biodegradation
    10.
    发明授权
    Evaluating reservoir oil biodegradation 有权

    公开(公告)号：US10330665B2

    公开(公告)日：2019-06-25

    申请号：US14933807

    申请日：2015-11-05

    Applicant: Schlumberger Technology Corporation

    Inventor： Youxiang Zuo ,  Oliver C. Mullins ,  Richard Jackson ,  Ankit Agarwal

    IPC: E21B49/08 ,  G01N33/28

    Abstract: Upper and lower asphaltene weight fractions of fluid proximate ends of an oil column are obtained based on measured OD. Upper and lower maltene partial densities are obtained based on the asphaltene weight fractions. A maltene partial density distribution is obtained utilizing the maltene partial densities and a predetermined diffusion model. An asphaltene partial density distribution is obtained based on the maltene partial density distribution and an estimated mass density gradient. An asphaltene weight percentage is obtained based on the asphaltene partial density distribution and the mass density gradient. The asphaltene weight percentage distribution is converted to an OD distribution utilizing a predetermined correlation. An optimization then reduces differences between the OD distribution and the measured OD data to within a predetermined range to refine a biodegradation time of the predetermined diffusion model. A viscosity distribution may be obtained based on the optimized OD distribution.

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