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31.发明授权公开(公告)号：US11709179B2
公开(公告)日：2023-07-25
申请号：US17546850
申请日：2021-12-09
Applicant: Merlin Technology, Inc.
Inventor： Albert W. Chau , John E. Mercer , Scott Phillips
CPC classification number: G01P15/18 , G01P3/00 , G01P15/00 , G01P15/0888 , B81B2201/0235
Abstract: An accelerometer arrangement and method are described for determining accelerations of an inground tool. First and second triaxial accelerometers are supported such that a normal sensing axis of the first triaxial accelerometer is at least generally orthogonal to the normal sensing axis of the second triaxial accelerometer for determining the accelerations along the three orthogonal axes based on a combination of sensing axis outputs from one or both of the triaxial accelerometers. A weaker sensing axis of one triaxial accelerometer can be supported at least approximately normal to a weaker sensing axis of another triaxial accelerometer such that the weaker axes are not used. The triaxial accelerometers can be supported such that one axis of one accelerometer can be redundant with respect to another axis of another accelerometer. One triaxial accelerometer can be mounted on a tilted plane with respect to another triaxial accelerometer.
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公开(公告)号：US11603754B2
公开(公告)日：2023-03-14
申请号：US17347113
申请日：2021-06-14
Applicant: Merlin Technology Inc.
Inventor： Albert W. Chau , Kenneth J. Theimer
IPC: E21B47/013 , E21B47/017 , E21B47/01 , E21B17/00 , E21B47/024 , E21B7/04
Abstract: A housing defines a through passage along its length and is configured to support a group of electrical isolators surrounding the through passage to form an electrically isolating break in a drill string such that each isolator of the group of isolators is subject to no more than a compressive force responsive to extension and retraction of the drill string. The housing defines a housing cavity to receive an electronics package having a signal port and is configured for electrical connection of the signal port across the electrically isolating break. A housing lid can cooperate with a main housing body to define elongated slots for purposes of enhancing the emanation of a locating signal. A housing arrangement can support electrical connections from an electronics package to bridge an electrically isolating gap.
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公开(公告)号：US20220333480A1
公开(公告)日：2022-10-20
申请号：US17855795
申请日：2022-07-01
Applicant: Merlin Technology, Inc.
Inventor： Albert W. Chau , Benjamin John Medeiros , Craig Caswell
IPC: E21B47/024 , E21B44/00 , E21B7/04 , E21B47/06 , E21B47/02 , E21B47/10 , E21B21/08 , E21B47/13 , E21B47/12 , G01V3/18
Abstract: 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.
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公开(公告)号：US11255185B2
公开(公告)日：2022-02-22
申请号：US16714792
申请日：2019-12-16
Applicant: Merlin Technology, Inc.
Inventor： Albert W. Chau , Loc Viet Lam
IPC: E21B47/12 , G01V3/30 , E21B7/04 , E21B47/095 , E21B47/125 , E21B7/30
Abstract: 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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35.发明授权公开(公告)号：US11215635B2
公开(公告)日：2022-01-04
申请号：US16745317
申请日：2020-01-16
Applicant: Merlin Technology, Inc.
Inventor： Albert W. Chau , John E. Mercer , Scott Phillips
Abstract: An accelerometer arrangement and method are described for determining accelerations of an inground tool. First and second triaxial accelerometers are supported such that a normal sensing axis of the first triaxial accelerometer is at least generally orthogonal to the normal sensing axis of the second triaxial accelerometer for determining the accelerations along the three orthogonal axes based on a combination of sensing axis outputs from one or both of the triaxial accelerometers. A weaker sensing axis of one triaxial accelerometer can be supported at least approximately normal to a weaker sensing axis of another triaxial accelerometer such that the weaker axes are not used. The triaxial accelerometers can be supported such that one axis of one accelerometer can be redundant with respect to another axis of another accelerometer. One triaxial accelerometer can be mounted on a tilted plane with respect to another triaxial accelerometer.
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Patent Agency Ranking
公开(公告)号：US20210301645A1
公开(公告)日：2021-09-30
申请号：US17347113
申请日：2021-06-14
Applicant: Merlin Technology Inc.
Inventor： Albert W. Chau , Kenneth J. Theimer
IPC: E21B47/01 , E21B17/00 , E21B47/017 , E21B47/013 , E21B47/024
Abstract: A housing defines a through passage along its length and is configured to support a group of electrical isolators surrounding the through passage to form an electrically isolating break in a drill string such that each isolator of the group of isolators is subject to no more than a compressive force responsive to extension and retraction of the drill string. The housing defines a housing cavity to receive an electronics package having a signal port and is configured for electrical connection of the signal port across the electrically isolating break. A housing lid can cooperate with a main housing body to define elongated slots for purposes of enhancing the emanation of a locating signal. A housing arrangement can support electrical connections from an electronics package to bridge an electrically isolating gap.
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公开(公告)号：US11047896B2
公开(公告)日：2021-06-29
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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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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39.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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40.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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