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101.发明申请公开(公告)号：US20210302485A1
公开(公告)日：2021-09-30
申请号：US17344895
申请日：2021-06-10
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：US11105161B2
公开(公告)日：2021-08-31
申请号：US16600352
申请日：2019-10-11
Applicant: Merlin Technology Inc.
Inventor： Albert W. Chau , Benjamin John Medeiros
IPC: E21B17/02 , E21B17/00 , E21B7/04 , E21B7/30 , E21B47/0232 , E21B17/042
Abstract: A coupling adapter is insertable in at least one joint of a drill string as the drill string is extended from a drill rig. The coupling adapter includes an arrangement for receiving a data signal that is generated by an inground tool and for electromagnetically coupling the data signal onto at least a portion of the drill string that extends from the adapter to the drill rig such that at least some of the drill pipe sections cooperate as an electrical conductor for carrying the data signal to the drill rig. In another feature, a current transformer is resiliently supported to isolate the current transformer from mechanical shock and vibration that is produced by an inground operation that is performed using the drill string. In another feature, a drill string repeater is described.
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公开(公告)号：US11035221B2
公开(公告)日：2021-06-15
申请号：US16450778
申请日：2019-06-24
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：US20210140304A1
公开(公告)日：2021-05-13
申请号：US17151612
申请日：2021-01-18
Applicant: Merlin Technology Inc.
Inventor： Guenter W. Brune , John E. Mercer , Albert W. Chau
IPC: E21B47/024 , E21B47/0232 , E21B7/04 , E21B44/00
Abstract: A boring tool that is moved by a drill string to form an underground bore. A transmitter transmits a time varying dipole field as a homing field from the boring tool. A pitch sensor detects a pitch orientation of the boring tool. A homing receiver is positionable at a target location for detecting the homing field to produce a set of flux measurements. A processing arrangement uses the pitch orientation and flux measurements with a determined length of the drill string to determine a vertical homing command for use in controlling depth in directing the boring tool to the target location such that the vertical homing command is generated with a particular accuracy at a given range between the transmitter and the homing receiver and which would otherwise be generated with the particular accuracy for a standard range, different from the particular range. An associated system and method are described.
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公开(公告)号：US10584573B2
公开(公告)日：2020-03-10
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 , E21B7/04 , G01V3/15 , E21B47/022
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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Patent Agency Ranking
106.发明授权公开(公告)号：US10551409B2
公开(公告)日：2020-02-04
申请号：US15973277
申请日：2018-05-07
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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107.发明授权公开(公告)号：US10520537B2
公开(公告)日：2019-12-31
申请号：US15685790
申请日：2017-08-24
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：US10443316B2
公开(公告)日：2019-10-15
申请号：US15475843
申请日：2017-03-31
Applicant: Merlin Technology Inc.
Inventor： Albert W. Chau , Benjamin John Medeiros
IPC: E21B17/02 , E21B17/00 , E21B47/022 , E21B7/04 , E21B7/30 , E21B17/042
Abstract: A coupling adapter is insertable in at least one joint of a drill string as the drill string is extended from a drill rig. The coupling adapter includes an arrangement for receiving a data signal that is generated by an inground tool and for electromagnetically coupling the data signal onto at least a portion of the drill string that extends from the adapter to the drill rig such that at least some of the drill pipe sections cooperate as an electrical conductor for carrying the data signal to the drill rig. In another feature, a current transformer is resiliently supported to isolate the current transformer from mechanical shock and vibration that is produced by an inground operation that is performed using the drill string. In another feature, a drill string repeater is described.
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公开(公告)号：US10422664B2
公开(公告)日：2019-09-24
申请号：US15090507
申请日：2016-04-04
Applicant: Merlin Technology, Inc.
Inventor： Rudolf Zeller , Guenter W. Brune , Albert W. Chau , John E. Mercer
IPC: G01V3/08 , G01D5/20 , E21B47/022 , G01V3/38
Abstract: A device rotates at least one static magnetic field about an axis, producing a rotating magnetic dipole field, and is movable in relation to the surface of the ground. The field is periodically sensed using a receiver to produce a receiver output responsive to the field. A positional relationship between the receiver and the device is monitored using the output. In one aspect, changing the positional relationship, by moving the device nearer to a boring tool which supports the receiver, causes an increase in accuracy of depth determination. In another aspect, determination of an actual overhead position of the boring tool, and its application, are described. Use of a plurality of measurements over at least one-half revolution of each magnet is disclosed. Establishing a surface radial direction toward a boring tool and resolution of multi-valued parameters is described. Calibration techniques, as well as a three transmitter configuration are also described.
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公开(公告)号：US20190257191A1
公开(公告)日：2019-08-22
申请号：US16404393
申请日：2019-05-06
Applicant: Merlin Technology Inc.
Inventor： Albert W. Chau , Dmitry Feldman , Benjamin John Medeiros
Abstract: Generally, a sonde, associated components and methods are described which can be used in conjunction with an inground tool having an inground tool housing that defines an inground tool cavity such that the inground tool cavity is exposed to an ambient pressure environment which surrounds the inground tool during an inground operation. A sonde housing assembly includes an exterior configuration that is receivable within the inground tool cavity. The sonde housing assembly at least partially defines a sonde interior and is further configured for receiving the pressure sensor body of a pressure sensor in a pressure sealed engagement. A sonde electronics package is supported within the sonde interior and is at least configured to receive the pressure signal and transfer a corresponding pressure signal from the sonde.
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