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    DEVICE AND METHOD TO OBTAIN THE VISCOSITY OF POLYMER FLUIDS USED FOR ENHANCED OIL RECOVERY
    14.
    发明申请
    DEVICE AND METHOD TO OBTAIN THE VISCOSITY OF POLYMER FLUIDS USED FOR ENHANCED OIL RECOVERY 有权

    公开(公告)号：US20220146393A1

    公开(公告)日：2022-05-12

    申请号：US17091402

    申请日：2020-11-06

    Applicant: SAUDI ARABIAN OIL COMPANY

    Inventor： Miguel Gonzalez ,  Subhash Chandrabose Ayirala ,  Lyla Maskeen ,  Abdulkarim Sofi

    IPC: G01N11/16 ,  G01N33/44

    Abstract: An apparatus for measuring a viscosity of a fluid is disclosed. The apparatus includes a Parylene coated quartz tuning fork for immersion in the fluid and an electronic circuit to excite a vibration of the Parylene coated quartz tuning fork and measure one or more vibrational parameters of the Parylene coated quartz tuning fork. A computer processor is configured to determine a non-Newtonian viscosity from the vibration of the Parylene coated quartz tuning fork based, at least in part, on a Stokes flow hydrodynamic model. The computer processor is coupled to a memory for storing a calibration curve to determine a Newtonian viscosity of the fluid from the non-Newtonian viscosity of the fluid.

    Method and device for measuring fluid properties using an electromechanical resonator
    15.
    发明授权
    Method and device for measuring fluid properties using an electromechanical resonator 有权

    公开(公告)号：US11061158B2

    公开(公告)日：2021-07-13

    申请号：US16435684

    申请日：2019-06-10

    Applicant: Saudi Arabian Oil Company

    Inventor： Miguel Gonzalez ,  Max Deffenbaugh ,  Huseyin Seren ,  Sebastian Csutak

    IPC: G01V1/50 ,  E21B49/08 ,  G01N9/00 ,  G01N11/16

    Abstract: A method and device are described for making in situ measurements of the density and viscosity of downhole fluids at subterranean wells. An oscillator circuit is deployed in the well comprising an amplifier, a feedback loop, and an electromechanical resonator. The electromechanical resonator is a component in the feedback loop of the oscillator circuit, and has a resonance mode that determines the frequency of the oscillator circuit. The electromechanical resonator is also in contact with the fluid such that the density and viscosity of the fluid influence the resonant frequency and damping of the resonator. The frequency of the oscillator is measured by a microcontroller. In one embodiment, the oscillator circuit periodically stops driving the electromechanical resonator such that the oscillation decays and the rate of decay is also measured by the microcontroller. The density and viscosity of the fluid are determined from the frequency and rate of decay of the oscillation. This measurement technique provides a faster response time to fluid changes than is possible with conventional measurement methods, and the fast response time opens up new applications for downhole viscosity and density measurements, including determining PVT characteristics, phase diagrams, and flow rates.

    Method And Device For Measuring Fluid Properties Using An Electromechanical Resonator
    16.
    发明申请
    Method And Device For Measuring Fluid Properties Using An Electromechanical Resonator 审中-公开
    使用机电谐振器测量流体特性的方法和装置

    公开(公告)号：US20170038491A1

    公开(公告)日：2017-02-09

    申请号：US15228241

    申请日：2016-08-04

    Applicant: Saudi Arabian Oil Company

    Inventor： Miguel Gonzalez ,  Max Deffenbaugh ,  Huseyin Seren ,  Sebastian Csutak

    IPC: G01V1/50 ,  E21B49/08

    CPC classification number: G01V1/50 ,  E21B49/08 ,  E21B49/087 ,  E21B2049/085 ,  G01N9/002 ,  G01N11/16 ,  G01N2009/006

    Abstract: A method and device are described for making in situ measurements of the density and viscosity of downhole fluids at subterranean wells. An oscillator circuit is deployed in the well comprising an amplifier, a feedback loop, and an electromechanical resonator. The electromechanical resonator is a component in the feedback loop of the oscillator circuit, and has a resonance mode that determines the frequency of the oscillator circuit. The electromechanical resonator is also in contact with the fluid such that the density and viscosity of the fluid influence the resonant frequency and damping of the resonator. The frequency of the oscillator is measured by a microcontroller. In one embodiment, the oscillator circuit periodically stops driving the electromechanical resonator such that the oscillation decays and the rate of decay is also measured by the microcontroller. The density and viscosity of the fluid are determined from the frequency and rate of decay of the oscillation. This measurement technique provides a faster response time to fluid changes than is possible with conventional measurement methods, and the fast response time opens up new applications for downhole viscosity and density measurements, including determining PVT characteristics, phase diagrams, and flow rates.

    Abstract translation: 描述了一种方法和装置，用于对地下井下井下流体的密度和粘度进行原位测量。 振荡器电路部署在井中，包括放大器，反馈回路和机电谐振器。 机电谐振器是振荡器电路的反馈环路中的一个部件，并且具有确定振荡器电路的频率的谐振模式。 机电谐振器也与流体接触，使得流体的密度和粘度影响谐振器的谐振频率和阻尼。 振荡器的频率由微控制器测量。 在一个实施例中，振荡器电路周期性地停止驱动机电谐振器，使得振荡衰减和衰减速率也由微控制器测量。 流体的密度和粘度由振荡衰减的频率和速率决定。 这种测量技术比传统的测量方法提供了比液体变化更快的响应时间，快速响应时间为井下粘度和密度测量（包括确定PVT特性，相图和流速）开辟了新的应用。

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