A tool for downhole formation evaluation
    41.
    发明公开
    A tool for downhole formation evaluation 审中-公开
    Werkzeug zur Bewertung einer Bohrlochformierung

    公开(公告)号:EP2015109A1

    公开(公告)日:2009-01-14

    申请号:EP07112397.0

    申请日:2007-07-12

    IPC分类号: G01V3/30

    CPC分类号: G01V3/30

    摘要: An apparatus for determining a property of a downhole formation, the apparatus comprising:
    an array having a plurality of transmitters and receivers capable of propagating electromagnetic waves through the formation;
    measuring circuitry for measuring an effect of the formation on the propagating waves;
    control circuitry arranged to vary the propagating waves as a function of at least one of frequency, spacing and polarization; and
    processing circuitry arranged to combine the effects of the propagating waves that are varied according to frequency, spacing and polarization for determining the property of the downhole formation.

    摘要翻译: 一种用于确定井下结构的性质的装置,所述装置包括:阵列,具有能够通过所述地层传播电磁波的多个发射器和接收器; 测量电路,用于测量传播波上形成的影响; 控制电路被布置为根据频率,间隔和极化中的至少一个来改变传播波; 以及处理电路,其布置成组合根据频率,间隔和极化而变化的传播波的影响,以确定井下地层的性质。

    METHOD FOR PROCESSING TIME LAPSED SEISMIC DATA SIGNALS
    43.
    发明授权
    METHOD FOR PROCESSING TIME LAPSED SEISMIC DATA SIGNALS 无效
    信号处理时间方法处理SEISMICHER DATA

    公开(公告)号:EP1090311B1

    公开(公告)日:2008-07-16

    申请号:EP99925220.8

    申请日:1999-06-18

    发明人: NICKEL, Michael

    IPC分类号: G01V1/28

    CPC分类号: G01V1/28 G01V2210/20

    摘要: A non-rigid method of matching two (12, 14) or more sets of seismic data signals obtained from the same subsurface area involving the steps of decomposing (20) the sets of seismic data signals into sample sets, generating displacement vectors (26) indicating directions and amounts samples from one sample set may be translated to better match samples from the other sample set, and translating (30) samples along the displacement vectors to produce a seismic image of the subsurface area. This method is particularly adapted for use in analyzing time-lapsed seismic images of petroleum reservoirs to monitor the movement of fluids within the reservoirs.

    Determination of porosity and fluid saturation of underground formations
    50.
    发明公开
    Determination of porosity and fluid saturation of underground formations 有权
    Bestimm der derPorositätundFlüssigkeitssättigungvon Bodenformationen。

    公开(公告)号:EP1795921A1

    公开(公告)日:2007-06-13

    申请号:EP05292622.7

    申请日:2005-12-06

    IPC分类号: G01V11/00 G01V5/04

    CPC分类号: G01V11/00

    摘要: A method of determining the porosity and fluid saturation for a given volume of an underground formation through which a borehole is drilled, the method comprising: measuring, from within the borehole, parameters relating to characteristics of the underground formation; determining volumetric values for resistivity, hydrogen index, density and neutron capture cross-section for the given volume from the measured parameters, each volumetric value including a contribution from formation matrix, water, oil and gas; determining, from the volumetric values, the volumes of rock matrix, pore water, oil and gas, and the salinity of the pore water; and determining the porosity and fluid saturation of the volume of the formation from the determined volumes and salinity.

    摘要翻译: 一种确定给定体积的地下地层钻孔孔隙度和流体饱和度的方法,所述方法包括:从钻孔内测量与地下地层特征相关的参数; 根据测量参数确定给定体积的电阻率,氢指数,密度和中子捕获截面的体积值,每个体积值包括来自地层矩阵,水,油和气的贡献; 从体积值确定岩石基质,孔隙水,油和气体的体积以及孔隙水的盐度; 并从确定的体积和盐度确定地层体积的孔隙度和流体饱和度。