Method for determining properties of a thinly laminated formation by inversion of multisensor wellbore logging data

    公开(公告)号:US11422280B2

    公开(公告)日:2022-08-23

    申请号:US16612320

    申请日:2018-04-23

    Abstract: A method for determining properties of a laminated formation traversed by a well or wellbore employs measured sonic data, resistivity data, and density data for an interval-of-interest within the well or wellbore. A formation model that describe properties of the laminated formation at the interval-of-interest is derived from the measured sonic data, resistivity data, and density data for the interval-of-interest. The formation model represents the laminated formation at the interval-of-interest as first and second zones of different first and second rock types. The formation model is used to derive simulated sonic data, resistivity data, and density data for the interval-of-interest. The measured sonic data, resistivity data, and density data for the interval-of-interest and the simulated sonic data, resistivity data, and density data for the interval-of-interest are used to refine the formation model and determine properties of the formation at the interval-of-interest. The properties of the formation may be a radial profile for porosity, a radial profile for water saturation, a radial profile for gas saturation, radial profile of oil saturation, and radial profiles for pore shapes for the first and second zones (or rock types).

    Method for determining formation properties by inversion of multisensor wellbore logging data

    公开(公告)号:US10365405B2

    公开(公告)日:2019-07-30

    申请号:US15544187

    申请日:2016-01-25

    Abstract: A computer-implemented method is provided for determining properties of a formation traversed by a well or wellbore. A formation model describing formation properties at an interval-of-interest within the well or wellbore is derived from measured sonic data, resistivity data, and density data for the interval-of-interest. The formation model is used as input to a plurality of petrophysical transforms and corresponding tool response simulators that derive simulated sonic data, resistivity data, and density data for the interval-of-interest. The measured sonic data, resistivity data, and density data for the interval-of-interest and the simulated sonic data, resistivity data, and density data for the interval-of-interest are used by an inversion process to refine the formation model and determine properties of the formation at the interval-of-interest. In embodiments, properties of the formation may be radial profiles for porosity, water saturation, gas or oil saturation, or pore aspect ratio.

    Methods for Interpretation of Time-Lapse Borehole Seismic Data for Reservoir Monitoring
    28.
    发明申请
    Methods for Interpretation of Time-Lapse Borehole Seismic Data for Reservoir Monitoring 审中-公开
    油藏监测时间延迟井眼地震数据解释方法

    公开(公告)号:US20150205002A1

    公开(公告)日:2015-07-23

    申请号:US14414704

    申请日:2013-07-25

    Abstract: A method for analyzing a reservoir parameter, the method including obtaining baseline borehole seismic (BHS) measurements and monitor BHS measurements, calculating, by a processor, a baseline velocity model from the baseline BHS measurements, calculating, by the processor, a monitor velocity model from the monitor BHS measurements, and determining a model change in the reservoir parameter by comparing the baseline velocity model and the monitor velocity model.

    Abstract translation: 一种用于分析储层参数的方法,所述方法包括获得基准井眼地震(BHS)测量和监测BHS测量,由处理器根据基线BHS测量计算基线速度模型,由处理器计算监测速度模型 通过监测BHS测量,并通过比较基线速度模型和监测速度模型来确定油藏参数的模型变化。

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