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公开(公告)号：US20210363870A1
公开(公告)日：2021-11-25
申请号：US16318083
申请日：2018-03-26
发明人： Yijing FAN , Burkay DONDERICI , Hsu-Hsiang WU , Li PAN
IPC分类号： E21B43/30 , E21B47/0228 , E21B7/04 , E21B44/00 , E21B43/24
摘要： An apparatus, method, and system for multi-well ranging and planning of a second injector well in the presence of a first injector well in close proximity to a producer well. The method includes generating a three-well forward simulation model using survey data for a producer well, survey data for a first injector well, survey data for a first section of a second injector well, a producer well casing property profile, and a formation resistivity parameter. The method provides for determining the offset between the true magnetic sensor position in the BHA and a planned depth position. The method determines ranging distance and direction of the drilling well to target well using the offset between the true magnetic sensor position and the first planned depth position. The method helps to adjust directional drilling parameter to achieve constant ranging distance between drilling well and target well.
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公开(公告)号：US20190277995A1
公开(公告)日：2019-09-12
申请号：US16415849
申请日：2019-05-17
发明人： Ahmed E. FOUDA , Burkay DONDERICI
IPC分类号： G01V3/28
摘要： Metamaterials are used in well logging measurement tools to position-shift and size-scale antennas such that they can be placed very close to the outer perimeter of the tool, which can improve azimuthal sensitivity and vertical resolution. Antennas of an azimuthal pipe inspection or induction-based borehole imaging tool can be placed with minimal stand-off against a borehole wall. Use of such metamaterials can improve the resolution of logs or images that are obtained by such tools. The metamaterials also can be used to effectively centralize radial coils. Disclosed implementations of metamaterials can be used with gradient ranging tools to effectively increase the spacing between ranging antennas. Increased spacing can maximize the signal levels with respect to noise, without producing distortions that are observed with the inclusion of magnetic materials.
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3.发明申请公开(公告)号：US20190093476A1
公开(公告)日：2019-03-28
申请号：US15768386
申请日：2015-12-29
发明人： Ilker R. CAPOGLU , Burkay DONDERICI
摘要： A borehole resistivity distribution system includes a cable having an array of transmitters along a shared conductive loop. Each of the transmitters is coupled to a corresponding frequency-dependent material or device. An application of a first drive signal to the cable excites the transmitters, to obtain a first measurement, the first drive signal having a first frequency and a first amplitude. An application of a second drive signal to the cable excites the transmitters, to obtain a second measurement, the second drive signal having a second frequency and a second amplitude. At least the first frequency is different from the second frequency, or the first amplitude is different from the second amplitude. The system further includes a processor coupled to receive the first and second measurements, to derive, based at least in part on the measurements, a resistivity distribution around a borehole.
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公开(公告)号：US20190056355A1
公开(公告)日：2019-02-21
申请号：US15580131
申请日：2016-11-06
CPC分类号： G01N27/902 , E21B12/02 , E21B47/00 , E21B47/124
摘要： Methods for detection of pipe characteristics, such as defect detection of downhole tubulars and overall thickness estimation of downhole tubulars, utilizing remote-field eddy current technique. A defect detection method may comprise disposing a defect detection tool in a wellbore, wherein the defect detection tool comprises a transmitter and a plurality of receivers; recording measurements for a plurality of channels, wherein each channel corresponds to a particular frequency and a particular receiver; utilizing pre-calculated estimation curves corresponding to the plurality of channels at a plurality of defected candidates to obtain thicknesses corresponding to the plurality of channels at each defected candidate; and evaluating variations for the thicknesses by computing standard deviations between the thicknesses obtained for the plurality of channels at each defected candidate; utilizing a minimum variation, wherein the minimum variation comprises a minimum standard deviation to determine the plurality of defected candidates; and computing an overall thickness change using overall thickness estimations for the plurality of defected candidates.
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公开(公告)号：US20190033052A1
公开(公告)日：2019-01-31
申请号：US16074412
申请日：2016-08-12
CPC分类号： G01B7/10 , E21B47/0905 , E21B47/10 , G01B21/08 , G01N27/9046
摘要： Methods, systems, and computer program products for inspecting a pipe in a well using an eddy-current based pipe inspection tool comprises conveying the pipe inspection tool through the well, obtaining a first voltage measurement at an axial position along the pipe from at least one main receiver. The first voltage measurement includes a residual voltage induced in the at least one main receiver by a residual magnetic field resulting from residual magnetism in the pipe. A second voltage measurement is obtained at said axial position along the pipe from at least one second receiver. The first voltage measurement and the second voltage measurement are processed to obtain a processed measurement representing a difference between the first and second voltage measurements. The processed measurement is substantially free of the residual voltage and may be use to estimate a thickness of the pipe and other pipe characteristics.
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公开(公告)号：US20180328165A1
公开(公告)日：2018-11-15
申请号：US15776741
申请日：2016-01-22
IPC分类号： E21B47/022 , E21B47/024 , E21B7/06 , G01V3/26
CPC分类号： E21B47/02216 , E21B7/06 , E21B43/2406 , E21B43/305 , E21B47/024 , E21B47/0905 , G01V3/18 , G01V3/26 , G01V3/28
摘要： A system includes a gradient sensor arrangement deployed in a first borehole, the gradient sensor arrangement having a plurality of spaced sensors at a single measured depth position. The system also includes an electromagnetic (EM) transmitter deployed in a second borehole. The system also includes a processor configured to determine a distance or direction of the EM transmitter relative to the gradient sensor arrangement based on EM field measurements collected by the gradient sensor arrangement in response to an EM field emitted by the EM transmitter. The system also includes a directional drilling controller configured to update a trajectory for either the first borehole or the second borehole in response to the determined distance or direction.
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公开(公告)号：US20170292367A1
公开(公告)日：2017-10-12
申请号：US15507705
申请日：2015-11-18
CPC分类号： E21B47/102 , E21B43/20 , G01V3/18 , G01V3/20 , Y02A90/342
摘要： A system for locating water floods, in some embodiments, comprises: multiple non-reference electrodes with insulative pads for coupling to a borehole casing; a reference electrode with an insulative pad for coupling to the borehole casing; and multiple transducers coupled to the reference and non-reference electrodes, each of said electrodes coupled to one or more of the multiple transducers, wherein each transducer coupled to a non-reference electrode determines a differential non-reference potential between that non-reference electrode and the reference electrode, and wherein a transducer that couples to the borehole casing determines an absolute reference potential between the borehole casing and the reference electrode; wherein the differential non-reference potentials are mathematically combined with the absolute reference potential to produce absolute non-reference potentials; wherein scaling weights are applied to said absolute non-reference potentials to produce scaled absolute potentials that are used to determine a water flood location.
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公开(公告)号：US20160259085A1
公开(公告)日：2016-09-08
申请号：US14422464
申请日：2014-02-28
发明人： Glenn Andrew WILSON , Burkay DONDERICI , Etiene M. SAMSON , Tasneem A. MANDVIWALA , Ahmed FOUDA
CPC分类号： G01V11/002 , E21B33/14 , E21B47/10 , E21B47/123 , G01V3/30
摘要： Permanent electromagnetic (EM) monitoring of the regions around and between wells may employ a casing string positioned within a borehole through the subsurface formations of interest. At least two passivated electrodes are mounted on the casing string to sense electric fields in the formation. Though only capacitively coupled to the formation, the passivated electrodes nevertheless provide a potential difference to an electro-optical transducer, which in turn modifies a property of the light passing along an optical fiber attached to the casing string. An interface unit senses the modified property to derive a measure of the electric field between each pair of passivated electrodes. The passivated electrodes have a contact surface that is conductive but for one or more layers of non-reactive (and thus electrically insulating) materials. Illustrative materials include metal oxides, polymers and ceramics, but the layers are preferably kept very thin to maximize the coupling capacitance with the formation.
摘要翻译： 井周围和区域之间的区域的永久电磁（EM）监测可以采用位于钻孔内的套管柱，通过感兴趣的地下地层。 至少两个钝化电极安装在套管柱上以感测地层中的电场。 虽然仅电容耦合到地层，但是钝化电极仍然向电光换能器提供电位差，这又改变沿着连接到套管柱的光纤通过的光的性质。 接口单元感测修改的特性以导出每对钝化电极之间的电场的测量。 钝化的电极具有导电的接触表面，但是对于一个或多个非反应（且因此电绝缘）材料层。 示例性材料包括金属氧化物，聚合物和陶瓷，但是这些层优选地保持非常薄以使与地层的耦合电容最大化。
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公开(公告)号：US20160003964A1
公开(公告)日：2016-01-07
申请号：US14767261
申请日：2013-03-15
摘要： A system and method of correcting induction logging data for relative dip, wherein an induction logging tool is utilized to collect initial induction logging data at a plurality of frequencies. The initial induction logging data is then corrected for skin effect and borehole effect, after which, inversion is performed on the processed induction logging data to determine a dip effect correction. The dip effect correction is then applied to the initial induction logging data in order to yield induction logging data that is dip corrected to reflect a zero relative dip. Once dip corrected, the induction logging data can be used with resistivity methodologies generally designed for instances where no dip is present in the formation under analysis. In certain embodiments, the inversion step utilizes an additive correction for the dip effect correction.
摘要翻译： 一种用于校正相对倾角的感应测井数据的系统和方法，其中利用感应测井工具以多个频率收集初始感应测井数据。 然后对皮肤效应和钻孔效应校正初始感应测井数据，之后对处理的感应测井数据进行反演以确定倾角效应校正。 然后将浸渍效应校正应用于初始感应测井数据，以便产生倾斜校正以反映零相对倾角的感应测井数据。 一旦倾斜校正，感应测井数据可以用于通常设计用于在分析中的地层中不存在浸渍的情况下的电阻率方法。 在某些实施例中，反转步骤利用倾角效应校正的附加校正。
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公开(公告)号：US20210184355A1
公开(公告)日：2021-06-17
申请号：US16077485
申请日：2017-06-27
发明人： Burkay DONDERICI , Baris GUNER
摘要： A sensor and sensing method for a downhole logging tool provide an antenna having a toroidal or spiral winding that is toroidally or helically wound around a toroid core. The toroidally-wound toroidal winding antenna forms a natural high-pass filter that is capable of suppressing low-frequency and midrange frequency noise and other interference. This allows the logging tool to sense or detect high-frequency signals, or the high-frequency component of a signal, more clearly and accurately. Multiple toroidally-wound toroidal winding antennas may be used in multiple different configurations, including a multi-axial configuration, bucking configuration, radial configuration, and the like. The sensor and sensing method are particularly useful in applications, such as dielectric logging, short hop communications, waterflood monitoring, and the like.
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