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公开(公告)号：US10954719B2
公开(公告)日：2021-03-23
申请号：US16588836
申请日：2019-09-30
Applicant: Merlin Technology, Inc.
Inventor： Tim Shaw , John E. Mercer , Albert W. Chau
IPC: E21B44/00 , E21B7/06 , G01V3/34 , G01V3/38 , E21B47/024 , G01V3/18 , E21B47/13 , E21B47/0232 , G01V3/08 , G01V3/15
Abstract: A boring tool is movable through the ground. A transmitter supported by the boring tool transmits an electromagnetic homing signal. A portable device monitors the electromagnetic homing signal and receives the electromagnetic homing signal in a homing mode for guiding the boring tool to a target position. A processor generates steering commands for guiding the boring tool based on a bore plan in a steering mode such that at least some positional error is introduced without using the electromagnetic homing signal. Switching from the steering mode to the homing mode is based on monitoring of the electromagnetic homing signal as the boring tool approaches the portable device to then guide the boring tool to the target position location in compensation for the positional error. Intermediate target positions are described as well as guiding the boring tool based on the homing signal so long as the portable device receives the signal.
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公开(公告)号：US10926872B2
公开(公告)日：2021-02-23
申请号：US16510897
申请日：2019-07-13
Applicant: Merlin Technology, Inc.
Inventor： John E. Mercer , Nicholas Albion , Mark Bartel , Marc Feifel , Mark Marvin
IPC: B64C27/57 , B64C27/56 , G05D1/10 , B64C13/18 , G05D1/08 , G05D1/00 , B64C27/59 , B64C27/64 , B64C27/68
Abstract: A helicopter autopilot system includes an inner loop for attitude hold for the flight of the helicopter including a given level of redundancy applied to the inner loop. An outer loop is configured for providing a navigation function with respect to the flight of the helicopter including a different level of redundancy than the inner loop. An actuator provides a braking force on a linkage that serves to stabilize the flight of the helicopter during a power failure. The actuator is electromechanical and receives electrical drive signals to provide automatic flight control of the helicopter without requiring a hydraulic assistance system in the helicopter. The autopilot can operate the helicopter in a failed mode of the hydraulic assistance system. A number of flight modes are described with associated sensor inputs including rate based and true attitude modes.
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公开(公告)号：US20200378189A1
公开(公告)日：2020-12-03
申请号：US16994619
申请日：2020-08-16
Applicant: Merlin Technology, Inc.
Inventor： Bruce Kolpack , David Bahr , Thomas J. Hall , Benjamin J. Medeiros
IPC: E21B7/04 , E21B47/024 , E21B7/06 , E21B44/00
Abstract: An apparatus and method are used in conjunction with a system for performing horizontal directional drilling, the system including a drill string extending from a drill rig to a boring tool such that the boring tool is steerable based on a roll orientation. The system also includes an arrangement for generating steering commands for guiding the boring tool to a target position. Responsive at least in part to the steering commands, a display is configured to selectively indicate each of a rotate command, a push command and a spin command. A steering indicator is described which indicates a current roll orientation of the boring tool. A 3-D grid can be animated and centered on either a steering or target indicator. Rounding of a steering command ratio can limit the display of target roll orientations to only those that a given boring tool transmitter is capable of sensing and indicating.
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74.发明申请公开(公告)号：US20200041553A1
公开(公告)日：2020-02-06
申请号：US16599110
申请日：2019-10-10
Applicant: Merlin Technology Inc.
Inventor： Loc Viet Lam , Albert W. Chau
Abstract: A portable device and associated method are described for use with a system in which a locating signal is transmitted from within the ground during an operational procedure. The locating signal includes a transmission frequency that is selectable from a group of discrete transmission frequencies in a frequency range and the region includes electromagnetic noise that can vary. The portable device includes a receiver having a bandwidth that includes the transmission frequency range and is operable for measuring the electromagnetic noise in the transmission frequency range to establish a frequency content of the electromagnetic noise for use in selecting one of the discrete transmission frequencies that is subsequently transmitted as the locating signal during the operational procedure. The locating signal can be transmitted from a boring tool, a pullback arrangement or an inground cable. A predicted maximum operational depth for a transmitter can be determined prior to the operational procedure.
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75.发明授权公开(公告)号：US10520536B2
公开(公告)日：2019-12-31
申请号：US14277873
申请日：2014-05-15
Applicant: Merlin Technology Inc.
Inventor： Loc Viet Lam , Albert W. Chau
Abstract: A portable device and associated method are described for use with a system in which a locating signal is transmitted from within the ground during an operational procedure. The locating signal includes a transmission frequency that is selectable from a group of discrete transmission frequencies in a frequency range and the region includes electromagnetic noise that can vary. The portable device includes a receiver having a bandwidth that includes the transmission frequency range and is operable for measuring the electromagnetic noise in the transmission frequency range to establish a frequency content of the electromagnetic noise for use in selecting one of the discrete transmission frequencies that is subsequently transmitted as the locating signal during the operational procedure. The locating signal can be transmitted from a boring tool, a pullback arrangement or an inground cable. A predicted maximum operational depth for a transmitter can be determined prior to the operational procedure.
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Patent Agency Ranking
公开(公告)号：US20190257707A1
公开(公告)日：2019-08-22
申请号：US16400771
申请日：2019-05-01
Applicant: Merlin Technology Inc.
Inventor： Albert W. Chau , Rudolf Zeller , John E. Mercer , Charles Yu Yat Tsang
Abstract: Tension monitoring is described using a sensor which may exhibit an offset for which compensation may be provided to produce a zero voltage amplified output or to increase dynamic range. An arrangement determines whether a power reset is responsive to a battery bounce such that an initially-measured system start-up parameter can be retained. The start-up parameter is automatically saved at start-up if the power reset is responsive to a start-up from a shut-down condition. The start-up parameter may be a zero tension amplified output responsive to the sensor offset at zero tension. Protection of a tension data set is provided such that no opportunity for altering the data set is presented prior to transfer of the data set. A housing configuration forms part of an electrical power circuit for providing electrical power to an electronics package from a battery.
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公开(公告)号：US20190249539A1
公开(公告)日：2019-08-15
申请号：US16396748
申请日：2019-04-28
Applicant: Merlin Technology Inc.
Inventor： Guenter W. Brune , Albert W. Chau , Rudolf Zeller , John E. Mercer
IPC: E21B44/02 , E21B47/022 , E21B7/04 , G01V3/15
CPC classification number: E21B44/02 , E21B7/04 , E21B7/046 , E21B47/02216 , E21B47/02224 , G01V3/15
Abstract: A steering tool is movable by a drill string to form an underground bore along an intended path. A sensing arrangement of the steering tool detects its pitch and yaw orientations at a series of spaced apart positions along the bore, each position is characterized by a measured extension of the drill string. The steering tool further includes a receiver. At least one marker is positioned proximate to the intended path, for transmitting a rotating dipole field to expose a portion of the intended path to the field for reception by the receiver. The detected pitch orientation, the detected yaw orientation and the measured extension of the drill string are used in conjunction with magnetic information from the receiver to locate the steering tool. The steering tool may automatically use the magnetic information when it is available. A customized overall position determination accuracy can be provided along the intended path.
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公开(公告)号：US20190211670A1
公开(公告)日：2019-07-11
申请号：US16297634
申请日：2019-03-09
Applicant: Merlin Technology, Inc.
Inventor： Albert W. Chau , Jason Pothier
CPC classification number: E21B47/122 , E21B7/046
Abstract: An inground housing supports a transmitter for receiving electrical power from a battery. The transmitter transmits at least one signal using at least two different transmit power levels for at least one of locating the transmitter and characterizing an orientation of the transmitter. Based on detecting the battery voltage, the transmitter selects one of the transmit power levels. Transmitter output power can be controlled based on one or both of signal gain and duty cycle.
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公开(公告)号：US10267143B2
公开(公告)日：2019-04-23
申请号：US15792502
申请日：2017-10-24
Applicant: Merlin Technology, Inc.
Inventor： Thomas J. Hall
IPC: E21B47/02 , E21B7/04 , E21B47/022 , E21B47/024 , E21B47/12 , E21B47/01 , E21B44/00
Abstract: A drilling area network hub is located proximate to a drill rig and includes an uphole transceiver in bidirectional communication with a downhole transceiver by utilizing the drill string as an electrical conductor. Certain information is collected including rig-based and/or location information. At least one field report is generated based on the certain information to characterize at least one of an inground operation, an operational condition of the downhole transceiver, an operational condition of the uphole transceiver, and an operational condition of the drill rig. A drilling area network server receives the field report from the Internet at a remote location and can generate a custom report and/or recommended actions based on field data. Region specific parameters can be applied to the operation of a drilling system. The drilling area network hub can transfer data logs to the remote location according to assigned priorities.
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公开(公告)号：US20190011590A1
公开(公告)日：2019-01-10
申请号：US16131432
申请日：2018-09-14
Applicant: Merlin Technology, Inc.
Inventor： Guenter W. Brune , John E. Mercer , Albert W. Chau , Rudolf Zeller
Abstract: Location determination is performed using a transmitter including an elongated generally planar loop antenna defining an elongation axis. The elongation axis is positioned along at least a portion of a path. A magnetic field is then generated which approximates a dipole field. Certain characteristics of the magnetic field are then determined at a receiving position radially displaced from the antenna elongation axis. Using the determined certain characteristics, at least one orientation parameter is established which characterizes a positional relationship between the receiving position and the antenna on the path. The magnetic field may be transmitted as a monotone single phase signal. The orientation parameter may be a radial offset and/or an angular orientation between the receiving position and the antenna on the path. The antenna of the transmitter may be inserted into a first borehole to transmit the magnetic field to a receiver inserted into a second borehole.
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