Methods and Systems for Characterizing A Hydrocarbon-Bearing Rock Formation Using Electromagnetic Measurements

    公开(公告)号:US20210405247A1

    公开(公告)日:2021-12-30

    申请号:US16912666

    申请日:2020-06-25

    Abstract: Methods and systems are provided for characterizing a subterranean formation that involve the generation of a 3D geological model of the formation. The 3D geological model can be used in conjunction with a fluid-flow simulator to generate a first 3D resistivity distribution. A second 3D resistivity distribution can be generated based on electromagnetic survey data of the formation. The 3D geological model can be updated based on differences between the first and second 3D resistivity distributions. The simulation and subsequent update to the 3D geological model can be repeated until differences between the first and second 3D resistivity distributions satisfy a stopping criterion. Data characterizing properties of the formation can be extracted from the resulting 3D geological model. The operations can be performed in conjunction with time-lapsed EM measurements before and after subjecting the formation to a production process and the extracted data can be analyzed to identify variations (such as fractures) in the formation that result from the production process.

    Determination of interfacial or surface tension

    公开(公告)号:US10545080B2

    公开(公告)日:2020-01-28

    申请号:US14255680

    申请日:2014-04-17

    Abstract: A method and apparatus for measuring interfacial or surface tension of a first fluid dispersed in a second fluid, the method involving providing at least one substantially spherical droplet or bubble of the first fluid in a flowing stream of the second fluid in a flow channel, followed by passing the flowing stream comprising the droplet or bubble through a constriction in the flow channel, the constriction being sufficiently constricting so as to cause the droplet or bubble to deform away from its substantially spherical shape and measuring and comparing a physical property of the flowing stream both before and after the constriction, wherein the physical property changes as a result of the deformation of the droplet or bubble, and thereby inferring the interfacial or surface tension from the measured physical property.

    METHOD FOR PREDICTION OF LIVE OIL INTERFACIAL TENSION AT RESERVOIR CONDITIONS FROM DEAD OIL MEASUREMENTS

    公开(公告)号:US20180156939A1

    公开(公告)日:2018-06-07

    申请号:US15367635

    申请日:2016-12-02

    Abstract: Methods may include measuring an interfacial tension (IFT) for a dead oil sample prepared from a fluid within an interval of a formation; calculating a gas:oil ratio for the fluid within the interval of a formation at a specified temperature and pressure; calculating a live oil density for the fluid within the interval of a formation for the specified temperature and pressure; and converting the IFT for the dead oil sample to a corrected IFT measurement for a live oil within the interval of the formation from the calculated gas:oil ratio and the calculated density. Methods may also include constructing a depletion path for the dead oil sample from one or more isobars and one or more isotherms; and converting the IFT for the dead oil sample to a corrected IFT measurement from the calculated gas:oil ratio and the calculated live oil density for a live oil.

    PREDICTION OF GAS PRODUCTION RATES FROM TIME-DEPENDENT NMR MEASUREMENTS
    45.
    发明申请
    PREDICTION OF GAS PRODUCTION RATES FROM TIME-DEPENDENT NMR MEASUREMENTS 审中-公开
    从时间依赖性NMR测量中预测气体产生率

    公开(公告)号:US20160334347A1

    公开(公告)日:2016-11-17

    申请号:US15153924

    申请日:2016-05-13

    Abstract: A tool having a pump-out unit, pumping unit, and NMR unit is disposed in a wellbore. On a pump-up cycle, after removing borehole fluids, a fluid is injected into a region of investigation. NMR measurements are made while fluid migrates into the region of investigation. On a production cycle, pressure is removed, allowing fluid to exit the formation while NMR measurements are made. A rate of fluid production is estimated using the time-dependent NMR measurements. Alternatively, the mass of a sample is measured. Fluid is injected into the sample and the mass of the injected sample is measured. Pressure is removed and the mass of the injected sample as the fluid migrates out of the sample is measured. The change in mass of the injected sample as the fluid migrates out of the sample is determined and a rate of fluid production is estimated using the determined change in mass.

    Abstract translation: 具有抽出单元,泵送单元和NMR单元的工具设置在井眼中。 在抽油机循环中,在排除钻井液之后,将流体注入到调查区域。 当流体迁移到调查区域时进行NMR测量。 在生产周期中,去除压力,允许流体在进行NMR测量时离开地层。 使用时间依赖性NMR测量来估计流体生产速率。 或者,测量样品的质量。 将流体注入样品中,并测量注入样品的质量。 测量压力,并测量随着流体迁移出样品的注入样品的质量。 确定流体从样品中移出的注入样品的质量变化,并且使用确定的质量变化来估计流体产生的速率。

    PROCESSES FOR MONITORING CORROSION AND CARRYING OUT OPERATIONAL PLANS USING SAME

    公开(公告)号:US20250116185A1

    公开(公告)日:2025-04-10

    申请号:US18483330

    申请日:2023-10-09

    Abstract: Processes for monitoring downhole corrosion and directing operational plans using same. In some embodiments, the process can include acquiring a plurality of corrosion factors for at least one well. The process can also include acquiring a plurality of corrosion loss logs for the at least one well. The plurality of corrosion factors and the plurality of corrosion loss logs can be provided to a repository. The repository can be provided to a machine learning model to generate a corrosion prediction. At least the plurality of corrosion factors, the plurality of corrosion loss logs, and the corrosion prediction can be combined into a user dashboard. The user dashboard can be used to determine an operational plan for the at least one well. The determined operational plan for the at least one well can be carried out.

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