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公开(公告)号：US20230204805A1
公开(公告)日：2023-06-29
申请号：US18178937
申请日：2023-03-06
申请人： SERCEL INC.
CPC分类号： G01V1/137 , G01V1/3861 , G01V2210/1293
摘要： A seismic source using tuned pulse sources to form an ultra-low frequency (ULF) cluster intended for use in generating seismic energy impulses for marine seismic exploration and more specifically to improved performance by increasing low frequency output to within a range of 1 Hz to 3 Hz to provide greater penetration of the seismic signal through complex overburden such as salt or basalt.
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公开(公告)号：US11655704B2
公开(公告)日：2023-05-23
申请号：US16827071
申请日：2020-03-23
申请人： Dieter J. Becker
发明人： Dieter J. Becker
IPC分类号： E21B47/047 , G01V1/137 , G01V1/46
CPC分类号： E21B47/047 , G01V1/137 , G01V1/46
摘要： Acoustic data can be collected from oil wells having various configurations of tubing and casing and under various operational conditions such as pumping, shut-in, and transition phases such as pressure build up. The acoustic data is collected by a microphone in response to the generation of an acoustic pulse that is transmitted into the well. There is typically substantial noise in the well pipes and this noise can degrade the quality of the reflected data recorded from the acoustic pulse. Much of this noise is produced by the flow of gas in the tubing and associated flow lines. Apparatus for use with the well can be configured to control the state of certain valves which can lead to a reduction of the noise received for the microphone that records the acoustic data.
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公开(公告)号：US20230147476A1
公开(公告)日：2023-05-11
申请号：US18045656
申请日：2022-10-11
摘要： Methods and systems for measuring cluster efficiency for stages of wellbores are provided herein. One method includes selecting a frequency band for generating broadband tube waves within the fluid column of the wellbore and generating the broadband tube waves within the fluid column of the wellbore using a pressure pulse generator that is hydraulically coupled to the wellbore. The method also includes recording data corresponding to the broadband tube waves and reflected broadband tube waves using pressure receivers that are hydraulically coupled to the wellbore. The pressure receivers are arranged into arrays with two or more pressure receivers in each array. The data recorded by the pressure receivers relate to characteristics of reflectors (including perforation cluster/fracture interfaces) within the wellbore. The method further includes processing the recorded data using interferometry and performing full waveform inversion(s) on the processed data to determine frequency-dependent, complex-valued reflection coefficients at each perforation cluster/fracture interface.
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公开(公告)号：US20220276400A1
公开(公告)日：2022-09-01
申请号：US17631195
申请日：2020-07-28
发明人： Naoki KUWAMORI , Narumi TAKAHASHI , Masaru NAKANO , Kentaro SUEKI , Shuichiro YADA , Yoko KUWAMORI
摘要： A seismic observation device includes an input unit receiving input of time-series data of measurement values of a vibration, a processing target determination unit determining a time period of the time-series data that is a processing target, and a type determination unit acquiring a likelihood of classifying a cause of the vibration indicated in the time-series data in the time period into each of types of cause.
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公开(公告)号：US20200158902A9
公开(公告)日：2020-05-21
申请号：US15801793
申请日：2017-11-02
发明人： Chengbo LI , Charles C. MOSHER , Robert G. KEYS , Peter M. EICK , Sam T. KAPLAN , Joel D. BREWER
摘要： A method for 2D seismic data acquisition includes determining source-point seismic survey positions for a combined deep profile seismic data acquisition with a shallow profile seismic data acquisition wherein the source-point positions are based on non-uniform optimal sampling. A seismic data set is acquired with a first set of air-guns optimized for a deep-data seismic profile and the data set is acquired with a second set of air-guns optimized for a shallow-data seismic profile. The data are de-blended to obtain a deep 2D seismic dataset and a shallow 2D seismic dataset.
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公开(公告)号：US10424284B2
公开(公告)日：2019-09-24
申请号：US15952334
申请日：2018-04-13
发明人： Andrey K. Morozov
IPC分类号： G10K9/08 , G01V1/137 , G01V1/133 , G10K11/172 , B06B1/20 , G01V1/02 , G10K11/04 , H04R1/28 , H04R1/34 , H04R1/44 , H04R3/04 , H04R17/00
摘要： An underwater sound source includes an acoustical driver, a controller of the acoustical driver, and a resonant tube acoustically coupled to the acoustical driver. The resonant tube has a pair of slotted portions, in which each slotted portion is disposed along the length of the resonant tube at a location corresponding to a node of a harmonic of the resonant tube. The sound system is configured to emit an output signal within a bandwidth defined by a dual resonance characteristic of the resonator tube. The sound source may also include a pair of coaxial tubular sleeves disposed around the resonant tube, each sleeve configured to slidably cover one of the slotted portions, and tune the resonance frequency of the tube over a wide range. At a high frequency end, when slots are uncovered, the frequency response of the resonant tube obtains a dual-resonant form.
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公开(公告)号：US10401511B2
公开(公告)日：2019-09-03
申请号：US15463987
申请日：2017-03-20
发明人： Andrey K. Morozov , Douglas C. Webb
摘要： A sound source including a first gas filled underwater resonator, a second gas filled underwater resonator connected to the first resonator, where the second resonator comprises a Helmholtz resonator, and at least one excitation member configured to excite the first resonator and the second resonator is disclosed. The first resonator is permanently tuned to produce a first resonant frequency upon excitation by the at least one excitation member and the second resonator is permanently tuned to produce a second resonant frequency upon excitation by the at least one excitation member. The first resonant frequency is different from the second resonant frequency.
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公开(公告)号：US20180210100A1
公开(公告)日：2018-07-26
申请号：US15878750
申请日：2018-01-24
CPC分类号： G01V1/04 , E21B47/18 , G01V1/137 , G01V2200/16
摘要： A seal and seal assembly for a fluid pressure pulse generating tool. The seal comprises an annular seal section comprising an internal sealing surface and an external sealing surface; and an annular heel section. The seal assembly comprises a seal assembly housing with a longitudinally extending bore therethrough for receiving a driveshaft of the tool and the seal enclosed by the seal assembly housing and configured to surround a portion of the driveshaft. The internal sealing surface of the seal is configured to be in sealing contact with the driveshaft and the external sealing surface of the seal is configured to be in sealing contact with an internal surface of the seal assembly housing. The annular heel section of the seal is configured to provide an interference fit with the driveshaft or with the internal surface of the seal assembly housing.
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公开(公告)号：US10031245B2
公开(公告)日：2018-07-24
申请号：US14589673
申请日：2015-01-05
申请人： Stephen Chelminski
发明人： Stephen Chelminski
摘要： An air gun for use in generating seismic energy impulses operable at pressures below 1000 psi that reduces high frequencies and cavitation around the discharge of the air gun in order to mitigate damage to the marine environment, the air gun providing a sliding seal at the firing piston, an extension of port widths beyond the diameter of the firing piston and capability to control the speed of the shuttle assembly to reduce and eliminate some of the possible causes of the objectionable high frequencies and cavitation.
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公开(公告)号：US10001572B2
公开(公告)日：2018-06-19
申请号：US14873286
申请日：2015-10-02
CPC分类号： G01V1/133 , G01V1/02 , G01V1/04 , G01V1/137 , G01V1/38 , G01V1/3808 , G01V1/3852
摘要： A magneto-hydrodynamic seismic source includes a casing having a central longitudinal axis; a fluid flow channel, and a plurality of electromagnets arranged along the channel for generating a uniform magnetic field at right angles to the central longitudinal axis of the channel, a first electrode positioned on a first side of the fluid flow channel, the first electrode being positioned opposite a second electrode that is positioned on a second opposing side of the fluid flow channel, and a controllable power source in electrical communication with the first electrode and the second electrode for generating a continuously varying electric field between the first electrode and second electrodes to generate a continuously varying inflow of seawater into the first end of the fluid flow channel with a corresponding continuously varying outflow of seawater in the form of a seismic signal being produced from the second end of the fluid flow channel.
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