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    Method and system for determining asphaltene onset pressure using a using depressurization and pressurization
    3.
    发明授权
    Method and system for determining asphaltene onset pressure using a using depressurization and pressurization 有权
    使用减压和加压测定沥青质起始压力的方法和系统

    公开(公告)号：US09568459B2

    公开(公告)日：2017-02-14

    申请号：US14262480

    申请日：2014-04-25

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Matthew T. Sullivan ,  Christopher Harrison ,  Shunsuke Fukagawa ,  Elizabeth Smythe ,  John Meier

    IPC: G01N33/28 ,  E21B47/06 ,  G01V8/00 ,  G01N21/3577 ,  G01N21/59

    CPC classification number: G01N33/2835 ,  E21B47/06 ,  G01N21/3577 ,  G01N21/59 ,  G01N2201/08 ,  G01V8/00

    Abstract: Methods and systems for determining for determining asphaltene onset pressure of a formation fluid are described herein. The method includes the following processes: (a) transmitting light through a sample of the formation fluid; (b) decreasing pressure of the sample; (c) detecting intensity of the transmitted light during depressurization; (d) identifying a change in intensity of the transmitted light during depressurization; (e) increasing pressure of the sample to a fixed pressure; and (f) detecting intensity of the transmitted light at the fixed pressure and at an equilibrated light intensity. Processes (a) to (f) are repeated for a number of different fixed pressures. The asphaltene onset pressure of the formation fluid sample can be determined using (i) the intensity of the transmitted light during each depressurization and (ii) the intensity of the transmitted light at each of the different fixed pressures.

    Abstract translation: 本文描述了用于确定地层流体的沥青质起始压力的方法和系统。 该方法包括以下过程：（a）通过地层流体的样品透射光; （b）降低样品的压力; （c）在减压期间检测透射光的强度; （d）识别减压期间透射光强度的变化; （e）将样品的压力增加到固定压力; 和（f）在固定压力和平衡的光强度下检测透射光的强度。 对于许多不同的固定压力重复过程（a）至（f）。 地层流体样品的沥青质起始压力可以使用（i）每次减压期间透射光的强度和（ii）在每个不同固定压力下的透射光的强度来确定。

    Methods and Systems for Analyzing Flow
    5.
    发明申请
    Methods and Systems for Analyzing Flow 审中-公开
    分析流程的方法和系统

    公开(公告)号：US20150354345A1

    公开(公告)日：2015-12-10

    申请号：US14730189

    申请日：2015-06-03

    Applicant: Schlumberger Technology Corporation

    Inventor： John Meier ,  Elizabeth Smythe ,  Matthew T. Sullivan ,  Shunsuke Fukagawa ,  Christopher Harrison

    IPC: E21B47/10 ,  G01F25/00 ,  G01F1/708

    CPC classification number: G01F1/7086 ,  E21B49/088 ,  E21B49/10 ,  G01F1/7044 ,  G01F1/7084 ,  G01F5/00 ,  G01F25/0015

    Abstract: Methods and systems for determining the presence and/or rate of a flow of a fluid sample include transmitting light through the fluid sample are disclosed. The methods comprise, applying a series of thermal pulses to the fluid sample, the series comprises a time interval between each thermal pulse, detecting transmitted light using a light detector; and determining at least one of (a) whether or not the fluid is flowing and (b) a flow rate of the fluid, based on an intensity of the transmitted light corresponding to at least one time interval.

    Abstract translation: 用于确定流体样品的流动的存在和/或速率的方法和系统包括透射通过流体样品的光。 该方法包括：将一系列热脉冲施加到流体样品，该系列包括每个热脉冲之间的时间间隔，使用光检测器检测透射光; 并且基于与至少一个时间间隔对应的所述透射光的强度来确定流体是否流动和（b）所述流体的流量中的至少一个。

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