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公开(公告)号：US11194069B2
公开(公告)日：2021-12-07
申请号：US16484507
申请日：2018-11-29
摘要： A method for borehole measurements may comprise receiving one or more signals from a linear receiver array, computing an arctan of a Hilbert Transform, isolating a first arriving energy, selecting a reference instantaneous phase on a reference receiver, finding the reference instantaneous phase for the linear receiver array, computing a relative travel time shift, combining a reference pick time with a relative time, and determining a travel time. A system for borehole measurements comprise a conveyance, a bottom hole assembly attached to the conveyance, a linear receiver array, wherein the linear receiver array is disposed on the bottom hole assembly, and a computer system connected to the linear receiver array.
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42.发明授权公开(公告)号：US11193366B2
公开(公告)日：2021-12-07
申请号：US17137719
申请日：2020-12-30
发明人： Xu Xue
IPC分类号： E21B47/017 , E21B47/0228 , G01C21/16 , E21B47/0224 , E21B47/14 , G01C19/56 , E21B47/13
摘要： A high-temperature miniaturized resonant gyroscope, which comprises a resonator, a circuit board, a piezoelectric element, a supporting base, a shell and a binding post, wherein the resonator is arranged in the shell and connected with the supporting base, the piezoelectric element is connected with the binding post through a metal conductor, and key process points of internal elements of the gyroscope are fixedly connected by high-temperature materials and high-temperature processes. The gyroscope is a small-sized gyroscope capable of working at a high temperature; the present disclosure also provides an inertial navigation system, which comprises a triaxial gyroscope, a triaxial accelerometer and a damper, wherein the gyroscope is fixedly connected with the damper, and the gyroscope adopts the high-temperature resonant gyroscope. A drilling measurement system and a measurement method.
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公开(公告)号：US11015429B2
公开(公告)日：2021-05-25
申请号：US15748530
申请日：2015-09-10
IPC分类号： E21B47/022 , E21B47/10 , G01V1/28 , G01V1/30 , G01V1/42 , E21B47/0224 , E21B44/00 , G01V1/52 , E21B47/107
摘要： In one or more embodiments, a system comprises a first (target) wellbore disposed in a formation, the first wellbore having a pressure imbalance therein causing an influx of formation fluids, a second (relief) wellbore disposed in the formation, a drill string disposed in the second wellbore, the drill string comprising a drill bit and a logging tool, and a wellbore ranging module comprising a processor and memory, the wellbore ranging module coupled to the drill string. The logging tool is configured to detect acoustic energy originating from the influx in the first wellbore and generate one or more signals associated with the detected acoustic energy. The wellbore ranging module is configured to receive, from the logging tool, the one or more signals associated with the detected acoustic energy and determine, using the received signals, a direction from the drill bit to the influx of the first wellbore.
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公开(公告)号：US11008851B1
公开(公告)日：2021-05-18
申请号：US16809600
申请日：2020-03-05
IPC分类号： E21B47/0224 , E21B47/107 , E21B47/14
摘要： The present invention discloses an ultrasonic wellbore anti-collision monitoring system, comprising a downhole ultrasonic monitoring device and a ground control system, wherein the ultrasonic monitoring device includes a cylindrical body, at least three centralizers are fixed on the cylindrical body at an equal interval, the mounting groove 1 is cut into the cylindrical body surface between two adjacent centralizers, one electrically controlled expansion device is installed in the groove 1 and includes electric push rods placed horizontally and a ribbed plate perpendicular to the electric push rods, the bottom ends of the electric push rods are fixedly connected to the bottom surface of the mounting groove, the front ends of the electric push rods are connected with the ribbed plate, the mounting groove 2 is cut into the ribbed plate, and one ultrasonic transducer is installed in the groove 2. The ground control system controls the ultrasonic transducer to emit S wave and receive the reflected wave, and calculates the distance between the two wells by monitoring the time difference between the emission time and the reflection time in combination with the travel velocity of S wave in the formation. The wellbore anti-collision monitoring system is simple in structure and easy in monitoring operation.
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公开(公告)号：US10927669B2
公开(公告)日：2021-02-23
申请号：US16600182
申请日：2019-10-11
发明人： Richard Timothy Coates , Peng Li
摘要： A method and system for reducing transducer ringing. The method may comprise identifying a first set of waveforms and a second set of waveforms from recorded waveforms taken by a transducer, estimating an invariant component for each waveform in the first set of waveforms, and subtracting the invariant component from the second set of waveforms. The system may comprise a downhole tool. The downhole tool may comprise at least one transducer and wherein the at least one transducer is configured to emit an excitation and record a plurality of waveforms. The system may further comprise an information handling system configured to identify a first set of waveforms and a second set of waveforms from the plurality of waveforms from the at least one transducer, estimate an invariant component for each waveform in the first set of waveforms, and subtract the invariant component from the second set of waveforms.
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公开(公告)号：US20210032977A1
公开(公告)日：2021-02-04
申请号：US17075172
申请日：2020-10-20
发明人： Yunlai Yang , Maher I. Almarhoon
IPC分类号： E21B47/0224 , E21B47/06 , E21B47/18 , E21B49/08 , E21B49/10
摘要： A central member defines a sample chamber and includes an elastic material configured to enclose at least a portion of a sample, acoustic sensors configured to detect sound waves in the sample chamber, and acoustic emitters configured to emit sounds waves in the central member. A pressure-retaining case is configured to contain a pressurized fluid between an annulus formed between the pressure-retaining case and the central member. A switch is configured to connect or disconnect a pulser and receiver circuit to a specified emitter of the acoustic emitters. A data acquisition unit is configured to receive a signal from each of the acoustic sensors. A pulser and receiver circuit is configured to send an electric pulse to an acoustic emitter and a control signal to the data acquisition unit.
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公开(公告)号：US09963936B2
公开(公告)日：2018-05-08
申请号：US14049430
申请日：2013-10-09
IPC分类号： E21B47/0224 , E21B7/04 , E21B44/00 , E21B47/09
CPC分类号： E21B7/04 , E21B44/005 , E21B47/091
摘要： A method, system and drilling apparatus for directional drilling are disclosed. A drill bit is located at a downhole end of a drill string in a borehole. A length of the borehole between a surface location and the drill bit at the downhole end of a drill string is determined and an azimuth angle and inclination of the drill bit is obtained. The length of the borehole may be determined by recording an arrival time at a downhole location of an acoustic pulse travelling from a surface location to the downhole location and determines the travel time and borehole length therefrom. A downhole processor determines a position and orientation of the drill bit from the determined length, azimuth angle and inclination and alters a steering parameter of the drill bit using the determined position and orientation of the drill bit to obtain a selected trajectory for drilling the borehole.
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