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公开(公告)号：US20240240555A1
公开(公告)日：2024-07-18
申请号：US18153791
申请日：2023-01-12
Applicant: Michael Simon Pogrebinsky
Inventor： Michael Simon Pogrebinsky
Abstract: A method for downlinking communication from a surface location to a bottom hole assembly during drilling operation is provided. The method includes pumping drilling fluid through a fluid line and through a drill string to the bottom hole assembly, and generating pressure wave signals by a modulator disposed against an outside surface of the fluid line at an outside-surface location of the fluid line. The modulator is disposed entirely outside of the fluid line. The method includes detecting and receiving at the bottom hole assembly the pressure wave signals generated by the modulator, and processing and decoding the pressure wave signals with a decoder associated with the bottom hole assembly to identify downlinking command purpose and required action for controlling drilling operations.
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公开(公告)号：US11802479B2
公开(公告)日：2023-10-31
申请号：US17584645
申请日：2022-01-26
Applicant: Halliburton Energy Services, Inc.
Inventor： Rashobh Rajan Sobhana
Abstract: A telemetry system includes a downhole device configured to generate modulated pressure pulses in drilling fluid within a drill string, first and second transducers configured provide first and second telemetry signals, respectively, responsive to pressure variations in the drilling fluid, and a telemetry computer coupled to the transducers. The telemetry computer includes a processor and a memory coupled to the processor. The memory contains instructions that, when executed by the processor, cause the telemetry computer to be configured to transform the first and second telemetry signals to a time-frequency domain representation to provide first and second time-frequency telemetry signals, respectively; and apply an unmixing filter to the first and second time-frequency telemetry signals to provide an enhanced signal in the time-frequency domain. The enhanced signal has a source signal component separated from a noise component, and the first and second telemetry signals are mixed source-noise signals.
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公开(公告)号：US20240352853A1
公开(公告)日：2024-10-24
申请号：US18304502
申请日：2023-04-21
Applicant: National Oilwell Varco, L.P.
Inventor： Andrew CRAIG , William Williams , Swathi Murali , Anthony Durkowski
IPC: E21B47/20
CPC classification number: E21B47/20
Abstract: A drilling system includes a drill string and surface equipment. The drill string includes a mud pulse transmitter. The mud pulse transmitter is configured to provide a first mud pulse transmission at a first rate responsive to drilling, and provide a second mud pulse transmission at a second rate responsive to not drilling. The surface equipment is coupled to the drill string. The surface equipment includes a mud pulse receiver. The mud pulse receiver is configured to receive the first mud pulse transmission at the first rate responsive to drilling, and receive the second mud pulse transmission at the first rate responsive to drilling. The second rate is higher than the first rate.
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公开(公告)号：US20230407742A1
公开(公告)日：2023-12-21
申请号：US18035294
申请日：2020-12-28
Inventor： Jing Ou , Jiansheng Du , Wenxiu Zhang , Xinzhen He , Xiaolong Li , Yuliang Wang
IPC: E21B47/20
CPC classification number: E21B47/20
Abstract: Disclosed is a synchronization method for an MWD mud pulse telemetry system. The method comprises: determining a synchronous training sequence on the basis of a frame structure of downhole sent data; constructing a correlation between the down-hole sending synchronous training sequence waveform and the uphole synchronous training sequence local waveform by means of the irrelevance of the trigonometric function; and performing correlation calculation on the synchronous training codeword waveform, which is received uphole and is subjected to the first modulation, and the synchronous training sequence local waveform, which is subjected to the second modulation, so as to obtain a correlation curve, and finding a synchronous position by means of the correlation curve.
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5.发明公开公开(公告)号：US20240329273A1
公开(公告)日：2024-10-03
申请号：US18417107
申请日：2024-01-19
Inventor： Wei CHEN , Xiufeng LI , Xu ZHANG , Qingshui GU , Ruiqing WU , Conglin YE , Jingyi LIN
Abstract: Disclosed is a bit-symbol mapping method using multi-pulse position modulation (MPPM), which relevant to the field of signal processing. An index of each dimension of an N-order M-dimensional matrix may be a pulse position number of a MPPM(N, M) symbol. The method includes mapping integers to a super-triangular area of the N-order M-dimensional matrix and establishing a correlation between the integers and the N-order M-dimensional matrix elements. In this way, a correspondence between a bit sequence and a MPPM(N, M) symbol is established using a correspondence between the N-order M-dimensional matrix element and an index number of each dimension of the N-order M-dimensional matrix element. A mathematical expression of the number of integers mapped to each layer in each dimension of a super-triangular area of an N-order M-dimensional matrix is used to generate a lookup table TLUT.
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Patent Agency Ranking
公开(公告)号：US11885218B2
公开(公告)日：2024-01-30
申请号：US17222305
申请日：2021-04-05
Applicant: Halliburton Energy Services, Inc.
Inventor： Joni Polili Lie , Mukul M. Agnihotri , Faisal Shah
IPC: E21B47/20
CPC classification number: E21B47/20
Abstract: Downhole telemetry systems and related methods to adaptively adjust pulse waveform width through digitally controlled pulsing parameters.
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7.发明公开公开(公告)号：US20230313677A1
公开(公告)日：2023-10-05
申请号：US17613856
申请日：2021-07-07
Applicant: VERTEX DOWNHOLE LTD.
Inventor： Kyle TWYNAM , Jaroslav DOBOS , Carl BROWN
Abstract: A mud pulser for generating pulses in a fluid flow in a wellbore. The mud pulser has a valve housing having an uphole opening for receiving fluid flow, and a piston valve situated in a piston chamber is longitudinally moveable between an open and closed position by closing and opening a pilot port downhole of the uphole opening and in fluid communication with the piston chamber. A first channel extends in the sidewall of the valve housing and fluidly connects the uphole opening and the pilot port. One or more fluid egress ports are in communication with the piston chamber. A metering orifice may be inserted in said one or more fluid egress ports for first channel. Opening and closing the downhole pilot port moves the piston valve and thus opens and closes the uphole opening thereby generating pressure pulses in the fluid flow. A downhole valve is further disclosed.
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公开(公告)号：US20230160301A1
公开(公告)日：2023-05-25
申请号：US17531657
申请日：2021-11-19
Applicant: Halliburton Energy Services, Inc.
Inventor： Jiajun Zhao , Ruijia Wang , Brenda Sue Jonathan
Abstract: Methods and systems for removing tool mode waveforms. The method may include disposing a bottom hole assembly (BHA) into a wellbore. The BHA may comprise at least one transmitter configured to transmit a pressure pulse and at least one receiver configured to record one or more waveforms. The method may further comprise performing a logging-while-drilling (LWD) operation in which the one or more waveforms are recorded with the at least one receiver, transmitting the one or more waveforms to an information handling system, removing one or more tool mode waveforms from the one or more waveforms to form an updated set of waveforms, and forming differential phase time semblance map based at least in part on the updated set of waveforms. The system may comprise the BHA and information handling system configured to remove one or more tool mode waveforms.
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公开(公告)号：US11655708B2
公开(公告)日：2023-05-23
申请号：US17037362
申请日：2020-09-29
Applicant: Halliburton Energy Services, Inc.
Inventor： Li Gao , Ravi P. Nanayakkara , Joni Polili Lie , Mukul M. Agnihotri
Abstract: A downhole telemetry method and system are disclosed. In some embodiment, a method includes driving a pulser device based on an input data stream, wherein driving the pulser device includes generating modulated pressure pulses including modulated pulse shapes within a fluid telemetry medium. In some embodiments in which bi-modulation is utilized, the method further includes driving the pulser device including modulating pressure pulses including pulse position modulating pressure pulses.
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公开(公告)号：US12084967B2
公开(公告)日：2024-09-10
申请号：US18153791
申请日：2023-01-12
Applicant: Michael Simon Pogrebinsky
Inventor： Michael Simon Pogrebinsky
Abstract: A method for downlinking communication from a surface location to a bottom hole assembly during drilling operation is provided. The method includes pumping drilling fluid through a fluid line and through a drill string to the bottom hole assembly, and generating pressure wave signals by a modulator disposed against an outside surface of the fluid line at an outside-surface location of the fluid line. The modulator is disposed entirely outside of the fluid line. The method includes detecting and receiving at the bottom hole assembly the pressure wave signals generated by the modulator, and processing and decoding the pressure wave signals with a decoder associated with the bottom hole assembly to identify downlinking command purpose and required action for controlling drilling operations.
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