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    • 2. 发明授权
    • Radial sounding electrical well logging instrument
    • 径向探测电测井仪
    • US6060886A
    • 2000-05-09
    • US7159
    • 1998-01-14
    • Leonty A. TabarovskyAntonio FabrisAlberto G. MezzatestaGregory B. Itskovich
    • Leonty A. TabarovskyAntonio FabrisAlberto G. MezzatestaGregory B. Itskovich
    • G01V3/24G01V3/18
    • G01V3/24
    • An apparatus for determining radial distribution of resistivity of earth formations surrounding a wellbore. The apparatus includes a sonde mandrel having an insulating exterior surface and electrodes disposed on the insulating surface at spaced apart locations. The electrodes are connected to circuits for measuring a focused current resistivity within a predetermined longitudinal span. The electrodes are also connected to circuits for measuring electrical impedance between pairs of electrodes spaced apart at a plurality of different longitudinal spacings. The preferred embodiment includes a voltage measuring circuit interconnected between a pair of electrodes which is positioned between a closest spaced pair of electrodes connected to the impedance measuring circuits, so that a vertical resolution of the impedance measurements can be limited to approximately the axial spacing of the pair of electrodes connected to the voltage measuring circuit. A method according to the invention for determining the distribution of resistivity of earth formations surrounding a wellbore includes the steps of measuring a focused current resistivity of the earth formations to determine a composite resistivity of an uninvaded zone, an invaded zone and a flushed zone. Impedance is measured between pairs of electrodes, each pair having a different longitudinal spacing, and resistivity of the flushed zone and the invaded zone are determined from the measurements of impedance. The resistivity of the uninvaded zone can then be determined from the measurement of focused current resistivity.
    • 一种用于确定井筒周围的地层的电阻率的径向分布的装置。 该设备包括具有绝缘外表面的探头心轴和在间隔开的位置处设置在绝缘表面上的电极。 电极连接到用于测量预定纵向跨度内的聚焦电流电阻率的电路。 电极还连接到用于测量以多个不同纵向间隔间隔开的电极对之间的电阻抗的电路。 优选实施例包括互连在一对电极之间的电压测量电路,该对电极位于连接到阻抗测量电路的最近间隔的一对电极之间,使得阻抗测量的垂直分辨率可以被限制在近似于 一对电极连接到电压测量电路。 根据本发明的用于确定围绕井筒的地层的电阻率分布的方法包括以下步骤:测量地层的聚焦电流电阻率以确定未浸没区域,入侵区域和冲洗区域的复合电阻率。 电阻对之间测量阻抗,每对电极具有不同的纵向间隔,并且从阻抗的测量值确定冲洗区域和入侵区域的电阻率。 然后可以从聚焦电流电阻率的测量来确定非浸没区域的电阻率。
    • 3. 发明授权
    • Method and apparatus for determining the resistivity and conductivity of
geological formations surrounding a borehole
    • 用于确定钻孔周围地质构造的电阻率和电导率的方法和装置
    • US6060885A
    • 2000-05-09
    • US874218
    • 1997-06-13
    • Leonty A. TabarovskyAntonio FabrisAlberto G. Mezzatesta
    • Leonty A. TabarovskyAntonio FabrisAlberto G. Mezzatesta
    • G01V3/22G01V3/18
    • G01V3/22
    • A differential array instrument for determining selected parameters of an earth formation surrounding a borehole, including an instrument mandrel carrying a single source electrode for injecting an electrical current of a predetermined value into the formation surrounding the borehole, and an array of a plurality of measurement electrodes uniformly and vertically spaced from said source electrode along the instrument mandrel. A predetermined group of the uniformly and vertically spaced electrodes are adapted to derive first and second difference potentials between the predetermined group of electrodes, wherein successive ones of a plurality of the predetermined group of selected measuring electrodes uniformly and vertically spaced at increasing distances from the source electrode axially of the borehole are adapted to derive a plurality of the first and second difference potentials between the predetermined group of electrodes. The first and second difference potentials are derived in response to current from the source electrode travelling generally vertically in an orientation generally parallel to the axis of the borehole in the formation to successive ones of the predetermined groups of selected measuring electrodes and which plurality of first and second difference potentials may be correlated to a plurality of values representative of the selected formation parameters. The plurality of values representative of the selected formation parameters may provide a profile of the selected parameters over an increasing radial distance from the borehole.
    • 用于确定围绕钻孔的地层的选定参数的差分阵列仪器,包括承载用于将预定值的电流注入到钻孔周围的地层中的单个源电极的仪器心轴和多个测量电极的阵列 沿着仪器心轴与所述源电极均匀且垂直地间隔开。 均匀和垂直间隔开的电极的预定组适于导出预定电极组之间的第一和第二差电位,其中多个预定组的选定测量电极中的连续的电极以均匀且垂直方向间隔开距离源 钻孔轴向的电极适于导出预定电极组之间的多个第一和第二差电位。 第一和第二差异电位是响应来自源电极的电流导出的,所述电流大致垂直地沿着大致平行于地层中的钻孔的轴线的定向行进到所选择的测量电极的预定组中的连续的一个,并且多个第一和第 第二差分电位可以与表示所选择的地层参数的多个值相关。 代表所选择的地层参数的多个值可以在距钻孔的增加的径向距离上提供所选参数的轮廓。
    • 4. 发明授权
    • Method and apparatus for measuring transient electromagnetic and
electrical energy components propagated in an earth formation
    • 用于测量在地层中传播的瞬态电磁和电能分量的方法和装置
    • US5955884A
    • 1999-09-21
    • US883539
    • 1997-06-26
    • Christopher C. PaytonKurt-M. StrackLeonty A. Tabarovsky
    • Christopher C. PaytonKurt-M. StrackLeonty A. Tabarovsky
    • G01V3/26G01V3/28
    • G01V3/26
    • A single well transient electromagnetic ("TEM") apparatus and method is disclosed. The invention includes a wireline logging tool adapted for disposition in a borehole drilled in earth formations that has mounted thereon an electromagnetic transmitter and electric field transmitter for applying electromagnetic energy to the formation that will maximize the radial depth of penetration of the energy into the formation. The logging tool further includes an electromagnetic receiver and electric field receiver for detecting the electric field and magnetic field components created in the formation by the TEM transmitter. The electromagnetic transmitter and receiver preferably comprise three-axis electromagnetic coils, and the electric field transmitter and receiver preferably comprise three-axis electric dipole antenna elements. The tool may employ an array of the TEM transmitters and TEM receivers spaced axially along the tool in the borehole.
    • 公开了一种单井瞬态电磁(“TEM”)装置和方法。 本发明包括一种电缆测井工具,其适于配置在钻井的钻孔中,其中安装有地层,其上安装有用于向地层施加电磁能量的电磁发射器和电场发射器,所述电场发射器和电场发射器将最大化能量穿入地层的径向深度。 测井工具还包括电磁接收器和电场接收器,用于检测由TEM发射器在地层中产生的电场和磁场分量。 电磁发射器和接收器优选地包括三轴电磁线圈,并且电场发射器和接收器优选地包括三轴电偶极子天线元件。 该工具可以采用在钻孔中沿工具轴向间隔开的TEM发射器和TEM接收器的阵列。
    • 5. 发明授权
    • Method of determining formation resistivity utilizing combined
measurements of inductive and galvanic logging instruments
    • 使用电感和电流测井仪器的组合测量法确定地层电阻率的方法
    • US5883515A
    • 1999-03-16
    • US887557
    • 1997-07-03
    • Kurt M. StrackLeonty A. Tabarovsky
    • Kurt M. StrackLeonty A. Tabarovsky
    • G01V3/20G01V3/28G01V3/18G01V3/24G01V3/38
    • G01V3/28G01V3/20
    • A method of determining selected parameters of an earth formation surrounding a borehole by first, obtaining at least one induction logging measurement of the selected parameters in a first predetermined volume of the formation surrounding the borehole having known first radial and vertical dimensions, then obtaining at least one galvanic logging measurement of the identical selected parameters in a second predetermined volume of the formation surrounding the borehole having known second radial and vertical dimensions that overlap the first radial and vertical dimensions of the first predetermined volume, whereby the overlapping volumes form a representative common volume of the formation, and then combining the induction and galvanic logging measurements using an inversion technique to obtain a measurement of the selected parameters of the earth formation surrounding the borehole in the representative common volume of the formation.
    • 首先确定围绕钻孔的地层的选定参数的方法,在具有已知的第一径向和垂直尺寸的钻孔周围的地层的第一预定体积中获得所选参数的至少一个感应测井测量,然后至少获得 在围绕钻孔的地层的第二预定体积中具有与第一预定体积的第一径向和垂直尺寸重叠的已知第二径向和垂直尺寸的相同选定参数的电流测井测量,由此重叠体积形成代表性共同体积 的形成,然后使用反演技术组合感应和电流测井测量,以获得在地层的代表性共同体积中围绕钻孔的地层的选定参数的测量。
    • 6. 发明授权
    • Method of interpreting induction logs in horizontal wells
    • 解释水平井中的感应测井的方法
    • US06308136B1
    • 2001-10-23
    • US09519029
    • 2000-03-03
    • Leonty A. TabarovskyMichael Boris RabinovichDavid R. Beard
    • Leonty A. TabarovskyMichael Boris RabinovichDavid R. Beard
    • G01V338
    • G01V3/38G01V3/28
    • An induction logging tool is used in an inclined borehole for determining properties of subsurface formations formation away from the borehole. Measurements are made at a plurality of transmitter-receiver (T-R) distances. After correction of the data for skin effects and optionally correcting for eddy currents within the borehole, the shallow measurements (those from short T-R spacing or from high frequency data) are inverted to give a model of the near borehole (invaded zone resistivity and diameter) and the resistivity of the formation outside the invaded zone. Using this model, a prediction is made of the data measured by the mid-level and deep sensors (long T-R spacings). A discrepancy between these predicted values and the actual measurements made by the midlevel and deep sensors is indicative of additional layer boundaries in the proximity of the wellbore.
    • 感应测井工具用于倾斜钻孔,用于确定远离钻孔的地下地层形成的性质。 在多个发射机 - 接收机(T-R)距离进行测量。 在校正了皮肤效应的数据并可选地校正钻孔内的涡流之后,浅测量(来自短TR间距或高频数据的那些)被反转以给出近钻孔的模型(入侵区电阻率和直径) 以及入侵区外的地层电阻率。 使用该模型,预测由中级和深层传感器测量的数据(长T-R间距)。 这些预测值与由中级和深度传感器进行的实际测量之间的差异表示在井筒附近的附加层边界。
    • 8. 发明申请
    • FORMATION RESISTIVITY MEASUREMENTS USING PHASE CONTROLLED CURRENTS
    • 使用相位控制电流形成电阻率测量
    • US20130027045A1
    • 2013-01-31
    • US13359581
    • 2012-01-27
    • Leonty A. TabarovskyStanislav W. Forgang
    • Leonty A. TabarovskyStanislav W. Forgang
    • G01V3/02
    • G01V3/24E21B47/102
    • Disclosed is an apparatus for estimating a property of an earth formation penetrated by a borehole. The apparatus includes a carrier configured to be conveyed through the borehole and having a first transmitter electrode configured to inject electrical current into the formation and a first measurement electrode configured to receive electrical current for measurement due to the current injection in order to estimate the property of the earth formation. A controller is configured to determine a phase difference between injected electrical current and received electrical current. A first bucker amplifier is coupled to the first measurement electrode and configured to apply a voltage to the first measurement electrode based on the determined phase difference in order for a phase of current received by the first measurement electrode to be substantially in phase with the current injected by the first transmitter electrode.
    • 公开了一种用于估计钻孔穿透的地层的性质的装置。 该装置包括:载体,被构造成通过钻孔传送,并具有配置成将电流注入到地层中的第一发射器电极;以及第一测量电极,其被配置为接收由于电流注入而进行测量的电流,以便估计 地球形成。 控制器被配置为确定注入的电流和接收的电流之间的相位差。 第一压差放大器耦合到第一测量电极,并且被配置为基于所确定的相位差向第一测量电极施加电压,以使由第一测量电极接收的电流的相位与注入的电流基本上同相 由第一发射机电极。