Generating relative permeabilities and capillary pressures

    公开(公告)号:US10358917B2

    公开(公告)日:2019-07-23

    申请号:US14741913

    申请日:2015-06-17

    Abstract: An apparatus is operated to obtain a model predicting data associated with a theoretical sampling operation to be performed by a downhole sampling tool, including predicted water-cut and pressure data relative to time elapsed during the theoretical sampling operation. The model predicts the water-cut and pressure data based on estimated relative permeability and capillary pressure related to different constituents of fluid theoretically obtained from a subterranean formation by the downhole sampling tool during the theoretical sampling operation. An actual sampling operation is performed with the downhole sampling tool to actually obtain fluid and data associated with the actually obtained fluid, including actual water-cut and drawdown pressure data. The apparatus is then operated to update the model utilizing the actual data water-cut and drawdown pressure data, thus obtaining actual relative permeability and capillary pressure data.

    Cleanup Model Parameterization, Approximation, and Sensitivity
    4.
    发明申请
    Cleanup Model Parameterization, Approximation, and Sensitivity 审中-公开
    清理模型参数化,近似和灵敏度

    公开(公告)号:US20160216404A1

    公开(公告)日:2016-07-28

    申请号:US15005531

    申请日:2016-01-25

    CPC classification number: E21B49/10

    Abstract: Methods and systems for generating and utilizing a proxy model that generates a pumping parameter as a function of contamination. The pumping parameter is descriptive of a pumpout time or volume of fluid to be obtained from a formation by a downhole sampling tool positioned in a wellbore extending into the formation. The contamination is a percentage of the fluid obtained by the downhole sampling tool that is not native to the formation. The proxy model is based on a true model that utilizes true model input parameters that include the pumping parameter, formation parameters descriptive of the formation, and a filtrate parameter descriptive of a drilling fluid utilized to form the wellbore. The output of the true model is the contamination as a function of the pumping parameter. The proxy model utilizes proxy model input parameters each related to one or more of the true model input parameters.

    Abstract translation: 用于生成和利用生成作为污染函数的泵送参数的代理模型的方法和系统。 泵送参数描述了通过定位在延伸到地层中的井眼中的井下采样工具从地层获得的液体的抽出时间或体积。 污染物是由井下取样工具获得的不是地层天然的液体的百分比。 代理模型基于真实模型,其使用真实模型输入参数,其包括泵送参数,描述地层的形成参数以及描述用于形成井眼的钻井液的滤液参数。 真实模型的输出是作为泵送参数的函数的污染物。 代理模型使用代理模型输入参数,每个参数与一个或多个真实模型输入参数相关。

    Geological Model Analysis Incorporating Cross-Well Electromagnetic Measurements
    5.
    发明申请
    Geological Model Analysis Incorporating Cross-Well Electromagnetic Measurements 审中-公开
    地质模型分析结合横井电磁测量

    公开(公告)号:US20140257706A1

    公开(公告)日:2014-09-11

    申请号:US13791826

    申请日:2013-03-08

    Abstract: A method for geological formation analysis may include collecting time-lapsed well-based measurement data from a first borehole in a geological formation over a measurement time period, and collecting time-lapsed electromagnetic (EM) cross-well measurement data via a plurality of spaced-apart second boreholes in the geological formation over the measurement time period. The method may further include determining simulated changes to a hydrocarbon resource in the geological formation over the measurement time period based upon a geological model using a processor, and using the processor to determine if the simulated changes are within an error threshold of the time-lapsed well-based measurement data and the time-lapsed cross-well EM measurement data. If the simulated changes are not within the error threshold, then the geological model may be updated.

    Abstract translation: 用于地质构造分析的方法可以包括在测量时间段内收集来自地质构造中的第一钻孔的基于时间的井测量数据,以及通过多个间隔收集经过时间的电磁(EM)交叉井测量数据 在测量时间段内在地质构造中铺设第二个钻孔。 该方法还可以包括基于使用处理器的地质模型来确定测量时间段上的地质构造中的烃资源的模拟变化,并且使用处理器来确定模拟变化是否在经过时间的错误阈值内 基于良好的测量数据和经过时间的交叉井EM测量数据。 如果模拟的变化不在误差阈值内,则可以更新地质模型。

    Cleanup model parameterization, approximation, and sensitivity

    公开(公告)号:US10352162B2

    公开(公告)日:2019-07-16

    申请号:US15005531

    申请日:2016-01-25

    Abstract: Methods and systems for generating and utilizing a proxy model that generates a pumping parameter as a function of contamination. The pumping parameter is descriptive of a pumpout time or volume of fluid to be obtained from a formation by a downhole sampling tool positioned in a wellbore extending into the formation. The contamination is a percentage of the fluid obtained by the downhole sampling tool that is not native to the formation. The proxy model is based on a true model that utilizes true model input parameters that include the pumping parameter, formation parameters descriptive of the formation, and a filtrate parameter descriptive of a drilling fluid utilized to form the wellbore. The output of the true model is the contamination as a function of the pumping parameter. The proxy model utilizes proxy model input parameters each related to one or more of the true model input parameters.

Patent Agency Ranking