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公开(公告)号：US20230070241A1
公开(公告)日：2023-03-09
申请号：US18050248
申请日：2022-10-27
IPC分类号： G01V1/16 , G01P15/125 , G01V1/00 , G01V1/38 , G01V1/18
摘要： The present disclosure is directed to a MEMS-based rotation sensor for use in seismic data acquisition and sensor units having same. The MEMS-based rotation sensor includes a substrate, an anchor disposed on the substrate and a proof mass coupled to the anchor via a plurality of flexural springs. The proof mass has a first electrode coupled to and extending therefrom. A second electrode is fixed to the substrate, and one of the first and second electrodes is configured to receive an actuation signal, and another of the first and second electrodes is configured to generate an electrical signal having an amplitude corresponding with a degree of angular movement of the first electrode relative to the second electrode. The MEMS-based rotation sensor further includes closed loop circuitry configured to receive the electrical signal and provide the actuation signal. Related methods for using the MEMS-based rotation sensor in seismic data acquisition are also described.
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公开(公告)号：US11585954B2
公开(公告)日：2023-02-21
申请号：US16847290
申请日：2020-04-13
申请人： Leidos, Inc.
发明人： Brian Hamburg , Norman Gholson
摘要： An acoustic vector sensor (“AVS”) includes one or more sensitive elements arranged in an orthogonal configuration to provide high-sensitivity directional performance. The one more sensitive elements may be seismometers arranged in a pendulum-type configuration. The AVS further includes a hydrophone.
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公开(公告)号：US20230015105A1
公开(公告)日：2023-01-19
申请号：US17757573
申请日：2020-12-15
发明人： Robert Loov , Nicholas Fundytus , Colin Wilson
IPC分类号： E21B47/107 , G01V1/18 , G01H9/00 , E21B23/14
摘要： The disclosure relates to a system, downhole device and method for monitoring a wellbore, in particular in a lateral section, during stimulation, with an equipment enabling retrieval in many conditions. The method includes monitoring the wellbore with a distributed fiber optic sensor to determine one or more characteristics of the stimulation operation using detected backscattered optical signals on the distributed fiber optic sensor. The cable is retrieved by exerting a traction force. The disclosure also relates to a downhole device for receiving a cable and retainers to maintain the cable and having a weakpoint configured to break when subjected to a force along the longitudinal axis greater than a predetermined threshold. The system comprises the cable having the distributed fiber optic sensor, the downhole device and a surface monitoring system for determining the characteristic of the stimulation operation using detected backscattered optical signals on the distributed fiber optic sensor.
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公开(公告)号：US11550071B2
公开(公告)日：2023-01-10
申请号：US16755878
申请日：2018-12-28
申请人： THALES
发明人： Florian Prevel , Alain Galet
摘要： A measurement device intended to be immersed in water, includes a set of arms and a reference axis, the measurement device being able to be in a deployed configuration, the measurement device comprising a set of measurement units borne by arms of the set of arms and each comprising an acoustic-waves sensor, the set of measurement units being configured and arranged in such a way as to generate a torque on the measurement device about the reference axis upon a vertical translational movement of the measurement device in the deployed configuration, the measurement device comprising compensation means configured and arranged in such a way as to generate another torque on the measurement device about the reference axis during the vertical translational movement, the other torque being directed in the opposite direction to the torque and having an intensity less than twice that of the torque.
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公开(公告)号：US20220299665A1
公开(公告)日：2022-09-22
申请号：US17654999
申请日：2022-03-16
申请人： Topcon Corporation
摘要： A surveying information management system using an information display terminal and a surveying device configured to measure a point cloud in a three-dimensional space includes: a surveying information acquisition unit configured to acquire, from the surveying device, the surveying information including point cloud data associated with position information; an area setting unit configured to set a display area for the point cloud; a segment setting unit configured to divide the display area into predetermined unit segments; a point cloud amount calculation unit configured to calculate a point cloud amount in a space of each of the unit segments; and a point cloud amount display unit configured to display, on the information display terminal, information according to the point cloud amount calculated for each of the unit segments of the display area by the point cloud amount calculation unit.
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公开(公告)号：US20220283328A1
公开(公告)日：2022-09-08
申请号：US17686649
申请日：2022-03-04
摘要： Calibration or quality assurance devices and methods that ensure proper ultrasound exposure. An apparatus for calibrating an ultrasound transducer is provided. The apparatus includes a hydrophone assembly having a layer containing a solid material and a hydrophone element embedded in the solid material of the layer. A method of calibrating a therapeutic ultrasound system including an ultrasound transducer and system electronics is also provided. The method may include connecting the ultrasound transducer to an electronics module, separately connecting the system electronics to the electronics module, driving the ultrasound transducer at a given frequency to emit an ultrasound beam, sensing the ultrasound beam with a hydrophone element, and measuring a signal that is output from the hydrophone element.
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公开(公告)号：US11428845B2
公开(公告)日：2022-08-30
申请号：US15343312
申请日：2016-11-04
发明人： Brian Richard Kryszczynski , Mark Andrew Tinker , Paul Armin Nyffenegger , Arthur Owen Endress , Kenneth Allan Ports
摘要： A method for forming a sensing system responsive to a wavefield of acoustic or seismic signals. One embodiment includes providing a foil layer having first and second opposing surfaces and piezoelectric properties. The foil layer, configured as a sheet, is positioned about a frame surface which provides the foil layer a stable shape while permitting the sheet configuration of the foil layer to be responsive to a wavefield of seismic or acoustic energy. Coupling between the foil layer and the frame is so limited as to render direct coupling of the foil layer with signals of the wavefield the predominant means for stimulating the sensor element with seismic energy.
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公开(公告)号：US20220171081A1
公开(公告)日：2022-06-02
申请号：US17108057
申请日：2020-12-01
发明人： Thai Son Le
摘要： An optical communication system that enables any deployed fiber-optic cable to function as an earthquake-detection sensor. In an example embodiment, a WDM optical transmitter of one network node operates to transmit a CW optical signal together with legacy data-carrying optical signals. At another network node, a low-complexity, low-latency coherent optical receiver is used to obtain time-resolved measurements of the Stokes parameters of the CW optical signal. The signal-processing chain of the optical receiver employs digital filtering to select frequency components of the measurements streams corresponding to seismic disturbances of the fiber-optical cable connecting the nodes. The selected frequency components are then used to compute values of an earthquake indicator, which are reported to a network controller. Based on such reports from three or more nodes, the network controller can determine the epicenter and magnitude of the earthquake and, if warranted, may generate a tsunami forecast.
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公开(公告)号：US20220163689A1
公开(公告)日：2022-05-26
申请号：US17104796
申请日：2020-11-25
发明人： Khalid M. Alruwaili , Cory Fehr
IPC分类号： G01V1/153 , E21B47/013 , G01V1/18 , G01V1/22
摘要： The shear head device includes a monitoring head having geophones and transmitters inside a cylindrical body. A shear head is coupled to the monitoring head from below. The shear head has a tubular structure with a plurality of apertures formed around an outer surface of the tubular structure. A plurality of cones are coupled with modified tips and disposed within the plurality of apertures. A sheet supports the plurality of cones inside the shear head. The sheet is selectively movable between a first radial position and a second radial position for the modified tips to apply radial force to the rock by adjustment of an internal pressure of the shear head. The transmitters transmit the recorded acoustic emission to a computing system for determining properties of the rock while the shear head device is testing the rock in the bore.
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公开(公告)号：US11327186B2
公开(公告)日：2022-05-10
申请号：US16603043
申请日：2018-09-27
发明人： Yanliang Pei , Baohua Liu , Pengyao Zhi , Guangming Kan , Chenguang Liu
摘要： The present invention discloses a submarine seismic monitoring apparatus and system based on the submarine Internet of things. A sea surface buoy network device and a submarine network device in the monitoring apparatus are connected by using an anchor system; the submarine network device and a submarine seismic detection device are connected by using a submarine photoelectric composite cable; there are one or more submarine seismic detection devices; the sea surface buoy network device includes a satellite transceiver apparatus, an Internet of things platform server, a network time server, and an autonomous energy supply apparatus; the submarine network device includes a photoelectric separation cabin, a submarine server, a bottom anchor weight block, and a mechanical releaser; and the submarine seismic detection device includes multiple submarine seismometer network nodes, where the multiple submarine seismometer network nodes are successively connected in series end to end by using the submarine photoelectric composite cable. The apparatus and system in the present invention not only can be used for submarine structure detection, but also can be used for earthquake disaster and tsunami warning, and can implement autonomous energy supply, long timing, and unattended operation.
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