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公开(公告)号：US11686159B2
公开(公告)日：2023-06-27
申请号：US17445561
申请日：2021-08-20
发明人： Luke A. Stack , Aaron W. Logan , Justin C. Logan , Mojtaba Kazemi Miraki , Patrick R. Derkacz , Gavin Gaw-wae Lee , Hasan Alper Hepguvendik , Daniel W. Ahmoye , Angelica J. B. Francoeur
IPC分类号： E21B17/00 , H01B3/12 , F16L25/01 , E21B17/02 , E21B17/042
CPC分类号： E21B17/003 , E21B17/028 , F16L25/01 , H01B3/12 , E21B17/0426
摘要： A gap sub assembly for electromagnetic telemetry used in downhole drilling. The gap sub comprises a female part comprising a female mating section and a male part comprising a male mating section. The male mating section is matingly received within the female mating section and electrically isolated therefrom. One or more electrically insulating bodies secure the male part axially and torsionally relative to the female part. The electrically insulating bodies also electrically isolate the male part from the female part. The electrically insulating bodies can be installed through apertures in the female part or at least some of the electrically insulating bodies can be installed before the male mating section is inserted into the female mating section. The electrically insulating bodies can be held in place on the male mating section using a retention apparatus such as a ring, a scarf, pods or an adhesive.
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公开(公告)号：US11174720B2
公开(公告)日：2021-11-16
申请号：US16486673
申请日：2018-02-22
IPC分类号： E21B47/00 , E21B47/007 , E21B44/04 , E21B47/024 , G01P15/18 , E21B7/04 , E21B21/08
摘要： Methods and apparatus for identifying downhole dynamics in a drilling system are provided. Acceleration-detecting sensors are mounted at multiple locations near to a drill bit, such as at a drill collar. The sensors may be spaced 90° apart along a circumference of the drill collar. The sensors detect acceleration measurements in a plane orthogonal to the drill string's axis of rotation, with respect to a first reference frame that moves with the drill string. The acceleration measurements are received by a processor and processed to determine rotational and revolution positions of the drill string within the wellbore with respect to a static reference frame. Whirl dynamics may, in particular, be determined based on the results in real time.
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公开(公告)号：US20210207443A1
公开(公告)日：2021-07-08
申请号：US17128757
申请日：2020-12-21
IPC分类号： E21B17/10 , E21B17/16 , E21B23/01 , E21B23/02 , E21B47/00 , E21B47/01 , E21B7/00 , E21B47/13 , E21B47/017 , E21B47/107 , E21B17/00
摘要： An assembly for use in subsurface drilling includes a downhole probe supported by a centralizer. The centralizer comprises a tubular member that extends around the downhole probe. A wall of the centralizer is fluted to provide inward contact points that support the downhole probe and outward contact points that bear against a bore wall of a section of drill string. The downhole probe may be supported for substantially its entire length.
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公开(公告)号：US10731459B2
公开(公告)日：2020-08-04
申请号：US16366929
申请日：2019-03-27
发明人： Aaron W. Logan , David A. Switzer , Jili Liu , Justin C. Logan , Mingdong Xu
摘要： A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.
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公开(公告)号：US10648247B2
公开(公告)日：2020-05-12
申请号：US16017676
申请日：2018-06-25
IPC分类号： E21B17/10 , E21B17/16 , E21B23/01 , E21B23/02 , E21B47/00 , E21B47/01 , E21B7/00 , E21B47/12 , E21B17/00 , E21B47/18
摘要： An assembly for use in subsurface drilling includes a downhole probe supported by a centralizer. The centralizer comprises a tubular member that extends around the downhole probe. A wall of the centralizer is fluted to provide inward contact points that support the downhole probe and outward contact points that bear against a bore wall of a section of drill string. The downhole probe may be supported for substantially its entire length.
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公开(公告)号：US10598000B2
公开(公告)日：2020-03-24
申请号：US15906855
申请日：2018-02-27
摘要： A method for using a downhole probe. The method comprises providing a probe, at least one vertical cross section of the probe having an area of at least pi inches squared. The method further comprises inserting the probe into a bore of a drill collar and passing a drilling fluid through the bore of drill collar at a flow velocity of less than 41 feet per second.
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公开(公告)号：US10352151B2
公开(公告)日：2019-07-16
申请号：US15305427
申请日：2015-05-08
摘要： A drill string section receives an electronics package. A flow channel extends through an aperture in the electronics package. The flow channel carries a flow of drilling fluid through the drill string section. The flow channel is sealed to a body of the drill string section. The electronics package need not be pressure-rated.
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公开(公告)号：US10316652B2
公开(公告)日：2019-06-11
申请号：US15532250
申请日：2015-12-11
发明人： Gavin Gaw-Wae Lee , Justin C. Logan , Kurtis West , Luke Stack , Aaron W. Logan
摘要： A method for selecting a drilling fluid pressure pulse transmission frequency in a downhole telemetry tool comprises: emitting a frequency sweep wave in a drilling fluid that comprises pressure pulses over a range of frequencies and over a period of time; measuring a pressure of the drilling fluid at the telemetry tool while the frequency sweep wave is being emitted; determining a signal strength at each frequency in the range of frequencies from the measured pressure of the drilling fluid; and selecting at least one frequency in the range of frequencies that meets a selected signal strength threshold as a telemetry signal transmission frequency for the telemetry tool. The method can further comprise encoding the at least one selected frequency in a header message and transmitting the header message to surface using pressure pulse telemetry, and then encoding telemetry data into a pressure pulse telemetry signal and transmitting the pressure pulse telemetry signal to surface at the at least one selected frequency.
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公开(公告)号：US10125904B2
公开(公告)日：2018-11-13
申请号：US15190895
申请日：2016-06-23
发明人： Hasan Alper Hepguvendik , Aaron William Logan , Justin Christopher Logan , Gavin Gaw-Wae Lee , Luke Anthony Stack , Mojtaba Kazemi Miraki , Patrick Robert Derkacz , Daniel William Ahmoye
IPC分类号： F16J15/10 , F16L17/025 , F16L21/02 , F16J15/06 , F16J15/14
摘要： A sealing member or gasket for sealing a space between two adjacent surfaces, the sealing member having at least one non-helical circumferential extension or ridge configured for size-on-size or press fit engagement with a corresponding recess in at least one of the surfaces being sealed. The sealing member can be formed by molding followed by insertion between the two adjacent surfaces, or by positioning the surfaces adjacent one another and then injecting or pouring the sealing member material into the space and allowing it to solidify in place.
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公开(公告)号：US10066475B2
公开(公告)日：2018-09-04
申请号：US15588371
申请日：2017-05-05
IPC分类号： E21B47/024 , E21B47/12 , E21B47/022 , E21B47/01
摘要： The embodiments described herein generally relate to a method and apparatus for providing a back up system of Directional and Inclination (D&I) information to be gathered and transmitted in addition to primary D&I sensors currently employed in industry. A downhole probe assembly including primary sensors, back up sensors and a controller is disclosed. The primary sensors comprise primary accelerometers and primary magnetometers configured to gather information relating to each of orthogonal axes X, Y and Z. The back up sensors comprise back up accelerometers configured to gather information relating to each of orthogonal axes X, Y and Z, the back up accelerometers being solid state accelerometers. The controller is in electrical communication with the primary sensors and the back up sensors. The controller is configured to receive and process information from the primary sensors and the back up sensors so that information from the back up accelerometers can be used when one or more of the primary accelerometers fail, which may allow drilling operations to continue despite such failure.
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