System and Method for Imaging Properties of Subterranean Formations
    2.
    发明申请
    System and Method for Imaging Properties of Subterranean Formations 审中-公开
    地下地层成像特性的系统与​​方法

    公开(公告)号:US20140239960A1

    公开(公告)日:2014-08-28

    申请号:US14272431

    申请日:2014-05-07

    IPC分类号: G01V3/20 E21B49/00

    摘要: A system and method for imaging properties of subterranean formations in a wellbore is provided. The system comprises a formation sensor for collecting currents injected into the subterranean formations, the formation sensor positionable on a downhole tool deployable into the wellbore. The system comprises a controller for controlling the formation sensor and a formation imaging unit. The formation imaging unit comprises a current management unit for collecting data from the currents injected into the subterranean formations, the currents having at least two different frequencies. The formation imaging unit comprises a drilling mud data unit for determining at least one drilling mud parameter, a formation data unit for determining at least one formation parameter from the collected data, and an inversion unit for determining at least one formation property by inverting the at least one formation parameter.

    摘要翻译: 提供了一种用于在井筒中成像地层的特性的系统和方法。 该系统包括用于收集注入到地层中的电流的地层传感器,地层传感器可定位在可部署到井筒中的井下工具上。 该系统包括用于控制地层传感器和地层成像单元的控制器。 地层成像单元包括用于从注入到地层中的电流收集数据的电流管理单元,该电流具有至少两个不同的频率。 地层成像单元包括用于确定至少一个钻井泥浆参数的钻井泥浆数据单元,用于根据所收集的数据确定至少一个地层参数的地层数据单元,以及用于通过将at 至少一个地层参数。

    Methods and systems employing look-around and look-ahead inversion of downhole measurements

    公开(公告)号:US11306582B2

    公开(公告)日:2022-04-19

    申请号:US16099980

    申请日:2017-05-08

    摘要: Inversion-based workflows are provided for real-time interpretation of the electromagnetic (EM) look-around and look-ahead measurements. The profile of a look-around zone is determined by interpreting EM measurements of a look-around zone. The profile of the look-around zone characterizes formation dip as well as vertical resistivity or resistivity anisotropy of one or more formation layers of the look-around zone. The profile of a look-ahead zone is determined by interpreting EM measurements of the look-ahead zone. The profile of the look-ahead zone characterizes formation dip as well as horizontal resistivity, vertical resistivity or anisotropy of one or more formation layers of the look-ahead zone. The workflows can also involve interpretation of look-around resistivity measurements to aid in the characterization of the look-around zone.

    Permeability determinations from wideband EM models using borehole logging tools

    公开(公告)号:US11061163B2

    公开(公告)日:2021-07-13

    申请号:US16614091

    申请日:2018-05-23

    IPC分类号: G01V3/30 G01V3/38

    摘要: A permeability log is generated by running borehole tools in a borehole traversing a formation, including at least electromagnetic (EM) tool providing at least a low-frequency complex conductivity measurement at least one frequency. Data from the EM tool and other data obtained from other tools are provided to a wideband EM model, where a data inversion is conducted to provide a plurality of outputs from which a cementation exponent may be calculated. The cementation exponent is used to find a formation factor at each depth of interest in the borehole, and the formation factor is used to find a permeability value which is used for the permeability log. The permeability log may be generated without the use of core data.

    PERMEABILITY DETERMINATIONS FROM WIDEBAND EM MODELS USING BOREHOLE LOGGING TOOLS

    公开(公告)号:US20210157025A1

    公开(公告)日:2021-05-27

    申请号:US16614091

    申请日:2018-05-23

    IPC分类号: G01V3/30 G01V3/38

    摘要: A permeability log is generated by running borehole tools in a borehole traversing a formation, including at least electromagnetic (EM) tool providing at least a low-frequency complex conductivity measurement at at least one frequency. Data from the EM tool and other data obtained from other tools are provided to a wideband EM model, where a data inversion is conducted to provide a plurality of outputs from which a cementation exponent may be calculated. The cementation exponent is used to find a formation factor at each depth of interest in the borehole, and the formation factor is used to find a permeability value which is used for the permeability log. The permeability log may be generated without the use of core data.

    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

    IPC分类号: G01V99/00 G01V11/00 G01N15/08

    摘要: 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
    8.
    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

    IPC分类号: G01V99/00 G06F17/10

    摘要: 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.

    摘要翻译: 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。

    System and Method for Imaging Properties of Subterranean Formations

    公开(公告)号:US20140191762A1

    公开(公告)日:2014-07-10

    申请号:US14210385

    申请日:2014-03-13

    IPC分类号: G01V3/20 E21B49/00

    CPC分类号: E21B49/00 G01V3/088 G01V3/24

    摘要: A system and method for imaging properties of subterranean formations in a wellbore is provided. The system comprises a formation sensor for collecting currents injected into the subterranean formations, the formation sensor positionable on a downhole tool deployable into the wellbore. The system comprises a controller for controlling the formation sensor and a formation imaging unit. The formation imaging unit comprises a current management unit for collecting data from the currents injected into the subterranean formations, the currents having at least two different frequencies. The formation imaging unit comprises a drilling mud data unit for determining at least one drilling mud parameter, a formation data unit for determining at least one formation parameter from the collected data, and an inversion unit for determining at least one formation property by inverting the at least one formation parameter.