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公开(公告)号：US20240287894A1
公开(公告)日：2024-08-29
申请号：US18655324
申请日：2024-05-06
发明人： Albert W. Chau , Loc Viet Lam
IPC分类号： E21B47/12 , E21B7/04 , E21B7/30 , E21B47/095 , E21B47/125 , G01V3/30
CPC分类号： E21B47/12 , E21B7/046 , E21B7/30 , E21B47/095 , E21B47/125 , G01V3/30
摘要： A drill string communication system is described. An uphole transceiver can couple a signal onto the drill string at a power that is always greater that a selectable power for a downhole signal. Communication from a drill rig to an inground tool can be re-initiated using a maximum uphole transmit power of an uphole transceiver. A procedure can establish a new set of transmission parameters for a drill string signal to establish communication between the drill rig and the inground tool. The system can include a walkover locator that receives an active/inactive status-controlled electromagnetic locating signal. Responsive to a locating signal degradation, a reconfiguration command can modify the locating signal. The uphole transceiver and a downhole transceiver can automatically modify at least one parameter of a downhole signal. An uphole receiver can apply a compensation response to a transferred signal to compensate for a drill string channel transfer function.
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2.发明公开公开(公告)号：US20240253777A1
公开(公告)日：2024-08-01
申请号：US18379159
申请日：2023-10-12
发明人： Mark Marvin , John E. Mercer , Derek Velter
CPC分类号： B64C27/57 , B64C27/006 , B64C27/56
摘要： An emergency collective actuator includes an actuator motor to produce an actuation force and an actuator linkage that directly engages a friction control lever that is pivotally supported on the collective stick of a helicopter to apply the actuation force directly to the friction control lever such that the actuation force initially disengages the friction control and then reduces the adjustable pitch toward a minimum collective pitch position. The actuator can include a clutch that slips to allow the pilot to overcome the actuation force and that slips responsive to an engagement of the friction control by the pilot, but otherwise the clutch co-rotates with the motor shaft to bias the adjustable pitch toward a minimum collective pitch position.
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公开(公告)号：US11906685B2
公开(公告)日：2024-02-20
申请号：US17157106
申请日：2021-01-25
发明人： John E. Mercer , Albert W. Chau
摘要： Discriminating between a cable locating signal and a false cable locating signal is described. A reference signal, which contains a locating signal frequency impressed on it, is transmitted in a way which provides for detection of a phase shift between the locating signal and the false locating signal. Based on the phase shift, a receiver is used to distinguish the locating signal from the false locating signal.
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4.发明授权公开(公告)号：US11852012B2
公开(公告)日：2023-12-26
申请号：US18126001
申请日：2023-03-24
IPC分类号： E21B47/13 , E21B47/024 , E21B47/0228 , E21B7/04 , E21B47/107
CPC分类号： E21B47/13 , E21B7/046 , E21B47/024 , E21B47/0228 , E21B47/107
摘要： A transmitter for inground use controls a depth signal transmit power in relation to a data signal transmit power such that one reception range of the depth signal at least approximately matches another, different reception range of the data signal. A portable device can form a system with the transmitter in which the portable device scans a plurality of frequencies within at least one low frequency depth signal range to measure the electromagnetic noise at each one of the plurality of frequencies and identify at least one of the frequencies as a potential depth frequency for the transmitter. The portable device can include a dual mode filter having a rebar mode and a normal mode filter. The depth signal frequency is dynamically positionable in relation to low frequency noise.
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公开(公告)号：US11828856B1
公开(公告)日：2023-11-28
申请号：US17379631
申请日：2021-07-19
发明人： Mark Marvin , Brian Kelly
摘要： A portable locator includes a locator housing having a display head that supports a display. A GPS module includes a frame and an antenna arm extending from a side margin of the frame. The frame defines a display aperture such that the frame is removably installable on the display head of the portable locator with the display visible through the display aperture. An electrical interface provides for electrical communication with the portable locator with the frame removably installed thereon.
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公开(公告)号：US11821300B1
公开(公告)日：2023-11-21
申请号：US17665510
申请日：2022-02-05
发明人： Scott Phillips , Timothy Bayliss , Thomas J. Hall
摘要： A sonde is receivable in a housing of an inground tool for transmitting an electromagnetic locating signal. The sonde is configured for monitoring a cumulative active run-time of its operation and for external transfer of the cumulative active run-time. A receiver receives the cumulative active run-time and provides at least one indication based on the cumulative active run-time.
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公开(公告)号：US20230340869A1
公开(公告)日：2023-10-26
申请号：US18215127
申请日：2023-06-27
发明人： Rudolf Zeller , Timothy Shaw , Timothy Bayliss , Craig Caswell
IPC分类号： E21B47/024 , E21B7/04 , G01S19/49 , G01S19/13 , G01B3/12
CPC分类号： E21B47/024 , E21B7/046 , G01S19/49 , G01S19/13 , G01B3/12
摘要： A planning tool plans movement of a boring tool for an underground drilling operation. The planning tool includes one or more wheels for rolling on a surface of the ground along a path responsive to movement by an operator to characterize the surface contour and to generate guidance for the boring tool to reach a target position. Planning can additionally be based on waypoints. The planning tool can be rolled unidirectionally or bidirectionally to characterize the surface contour. Bidirectional movement cancels accelerometer fixed bias. Path stitching is used to plan around obstacles. The planning tool can facilitate tracker placement. The planning tool can collect noise information for frequency selection purposes. A described technique maximizes linear drilling in an underground plan. Compensation and/or warnings are provided for unsteady, fast and slow movement of the planning tool while measuring the surface contour.
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8.发明申请公开(公告)号：US20220107167A1
公开(公告)日：2022-04-07
申请号：US17155961
申请日：2021-01-22
发明人： Rudolf Zeller , Richard McKibbon , David Bahr , Johan Anders Fredrik Mantere , Sigurdur Finnsson
摘要： A planning tool plans movement of a boring tool for an underground drilling operation. The planning tool includes one or more wheels for rolling on a surface of the ground along a path responsive to movement by an operator to characterize the surface contour and to generate guidance for the boring tool to reach a target position. Surface roughness is measured based on instantaneous rate of change of an accelerometer output. Accelerometer cross axis sensitivity compensation provides for more accurate surface contour characterization for paths that are not smooth. Accuracy of rolling datasets is predicted and associated indications are presented based on surface roughness in combination with speed. A rumble/speed gauge guides operator movement based on detected surface roughness in combination with speed.
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公开(公告)号：US11255186B1
公开(公告)日：2022-02-22
申请号：US16792779
申请日：2020-02-17
发明人： Scott Phillips , Timothy Bayliss , Thomas J. Hall
摘要： A sonde is receivable in a housing of an inground tool for transmitting an electromagnetic locating signal. The sonde is configured for monitoring a cumulative active run-time of its operation and for external transfer of the cumulative active run-time. A receiver receives the cumulative active run-time and provides at least one indication based on the cumulative active run-time.
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公开(公告)号：US11136881B2
公开(公告)日：2021-10-05
申请号：US13946611
申请日：2013-07-19
IPC分类号： E21B47/13 , E21B47/024 , G01V3/18 , E21B21/08 , E21B47/12 , E21B44/00 , E21B7/04 , E21B47/02 , E21B47/06 , E21B47/10
摘要： Systems, apparatus and methods are described for purposes of initiating a response to detection of an adverse operational condition involving a system including a drill rig and an inground tool. The response can be based on an uphole sensed parameter in combination with a downhole sensed parameter. The adverse operational condition can involve cross-bore detection, frac-out detection, excessive downhole pressure, a plugged jet indication and drill string key-holing detection. A communication system includes an inground communication link that allows bidirectional communication between a walkover detector and the drill rig via the inground tool. Monitoring of inground tool depth and/or lateral movement can be performed using techniques that approach integrated values. Bit force based auto-carving is described in the context of an automated procedure. Loss of locator to drill rig telemetry can trigger an automated switch to a different communication path within the system.
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