# US 11,028,645 B2 · Push the bit rotary steerable system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,028,645 B2 - Document ID: US11028645B2 - Status: Granted - Kind: B2 - Application number: 15/999,107 - Filed: 2017-02-20 - Published: 2020-02-27 - Granted: 2021-06-08 - Earliest claimed: 2016-02-18 - Assignees: D-Tech UK Ltd - Applicants: D-Tech UK Ltd - Inventors: Richard Hutton - Web page: https://patentgrep.com/patent/US11028645B2 ## CPC - E21B 7/067: {with means for locking sections of a pipe or of a guide for a shaft in angular relation, e.g. adjustable bent sub} - E21B 3/00: Rotary drilling - E21B 7/06: Deflecting the direction of boreholes - E21B 7/062: {the tool shaft rotating inside a non-rotating guide travelling with the shaft (E21B7/067 and E21B7/068 take precedence)} - E21B 47/022: of the borehole, e.g. using geomagnetism - E21B 47/024: of devices in the borehole (determining slope or direction of the borehole E21B47/022) - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract A method device, and system is described herein for pushing a rotary drill bit. Pushing the rotary drill bit ears include receiving a target direction in a formation to push the rotary drill bit wile drilling a wellbore in a formation. Pushing the rotary drill bit can also include opening, at a first rotational position of a rotary bit pushing device disposed proximate to the rotary drill bit within the wellborn, a first inlet port of a first flow regulator. Pushing the rotary drill bit can further include closing, after the first rotational position of the rotary bit pushing device the first inlet port. Pushing the rotary drill bit can also include sending, to a second flow regulator of the rotary bit pushing device, a second quantity of drilling fluid. ## Claims ### Claim 1 A rotary bit pushing device, comprising: a body comprising a sidewall having an inner surface that defines a cavity extending between a first and second end of the body, the body having a longitudinal axis extending between the first and second end of the body; at least one deflection device disposed within a recess defined by the sidewall and coupled to the body, wherein the at least one deflection device is movable between a retracted position and an extended position in which the at least one deflection device is further from the longitudinal axis than when the at least one deflection device is in the retracted position; a first flow regulator configured to direct fluid to the at least one deflection device based on a rotational position of the body relative to a wellbore to cause the at least one deflection device to move between the retracted and extended positions; and a second flow regulator configured to direct fluid from the cavity to the at least one deflection device regardless of the rotational position of the body relative to the wellbore. ### Claim 2 (depends on 1) The device of claim 1, comprising a plurality of the at least one deflection devices. ### Claim 3 (depends on 2) The device of claim 2, wherein at least two of the plurality of deflection devices are aligned with the longitudinally axis of the body. ### Claim 4 (depends on 2) The device of claim 2, wherein at least two of the plurality of deflection devices are spaced circumferentially about the longitudinal axis of the body. ### Claim 5 (depends on 2) The device of claim 2, wherein the first flow regulator is configured to direct fluid to a respective one of the plurality of deflection devices based on the rotational position of the body relative to the wellbore. ### Claim 6 (depends on 1) The device of claim 1, wherein the second flow regulator is configured to continuously direct fluid from the cavity to the at least one deflection device. ### Claim 7 (depends on 1) The device of claim 1, wherein the at least one deflection device comprises an actuation surface and the first flow regulator is configured to direct fluid to the actuation surface of the at least one deflection device to move the at least one deflection device from the retracted position to the extended position. ### Claim 8 (depends on 1) The device of claim 1, comprising a first channel in fluid communication with the first flow regulator and the at least one deflection device. ### Claim 9 (depends on 2) The device of claim 2, comprising a second channel in fluid communication with a first one of the plurality of deflection devices and a second one of the plurality of deflection devices. ### Claim 10 (depends on 9) The device of claim 9, wherein the second flow regulator is configured to direct fluid from the cavity to the second channel. ### Claim 11 A method of pushing a rotary drill bit, the method comprising: rotating a rotary bit pushing device within a wellbore, wherein the rotary bit pushing device comprises: a body having a longitudinal axis extending between a first and second end of the body; at least one deflection device coupled to the body; a first flow regulator configured to direct fluid to the at least one deflection device based on a rotational position of the body; a second flow regulator; when the device is in a first rotational position, communicating fluid from a first inlet port of the first flow regulator to the at least one deflection device to effectuate movement of the at least one deflection device from a retracted position to an extended position in which the at least one deflection device is further from the longitudinal axis of the body than when the at least one deflection device is in the retracted position; when the device is no longer in the first rotational position, blocking fluid communication between the first inlet port of the first flow regulator and the at least one deflection device to allow movement of the at least one deflection device from the extended position to the retracted position; and communicating fluid between the second flow regulator and the at least one deflection device regardless of the rotational position of the device. ### Claim 12 (depends on 11) The method of claim 11, wherein the rotary bit pushing device includes a plurality of deflection devices, the at least one deflection device comprises a first one of the plurality of deflection devices, and the method comprises: when the rotary bit pushing device is in a second rotational position, communicating fluid from a second inlet port of the first flow regulator to a second one of the plurality of deflection devices to effectuate movement of the second one of the plurality of deflection devices from the retracted position to the extended position; and when the rotary bit pushing device is no longer in the second rotational position, blocking fluid communication between the second inlet port of the first flow regulator and the second one of the plurality of deflection devices to allow movement of the second one of the plurality of deflection devices from the extended position to the retracted position. ### Claim 13 (depends on 11) The method of claim 11, wherein the rotary bit pushing device traverses the first rotational position at a frequency of 200 times each minute. ### Claim 14 (depends on 12) The method of claim 12, comprising communicating fluid between the second flow regulator and each of the plurality of deflection devices regardless of the rotational position of the rotary bit pushing device. ### Claim 15 (depends on 14) The method of claim 14, wherein fluid communicated from the second flow regulator moves debris away from one or more of the plurality of deflection devices. ### Claim 16 (depends on 15) The method of claim 15, comprising controlling the first flow regulator with a controller having a processor. ### Claim 17 A push the bit rotary steerable system, comprising: a drill string comprising a sidewall that defines a cavity; a fluid circulation system configured to provide fluid in the cavity of the drill string; and a bottom hole assembly configured to be coupled to the drill string, the bottom hole assembly comprising: a rotary drill bit; a rotary bit pushing device coupled to a distal end of the drill string and a proximal end of the rotary drill bit, wherein the rotary bit pushing device comprises: a body having a sidewall comprising an inner surface that defines a cavity extending between a first and second end of the body, the body having a longitudinal axis extending between the first and second end of the body and the cavity of the body configured to be in fluid communication with the cavity of the drill string; at least one deflection device disposed within a recess defined by the sidewall and coupled to the body, wherein the at least one deflection device is movable between a retracted position and an extended position in which the at least one deflection device is further from the longitudinal axis than when the at least one deflection device is in the retracted position; a first flow regulator configured to direct fluid from the cavity of the drill string to the at least one deflection device based on a rotational position of the body relative to a wellbore to cause the at least one deflection device to move between the retracted and extended positions; and a second flow regulator configured to direct fluid from the cavity of the body to the at least one deflection device regardless of the rotational position of the body relative to the wellbore. ### Claim 18 (depends on 17) The system of claim 17, further comprising a controller having a process, the controller configured to control the first flow regulator to direct fluid to the at least one deflection device based on the rotational position of the body relative to the wellbore. ### Claim 19 (depends on 17) The system of claim 17, wherein the second flow regulator is configured to continuously direct fluid from the cavity of the body to the at least one deflection device. ### Claim 20 (depends on 17) The system of claim 17, wherein the at least one deflection device comprises an actuation surface and the first flow regulator is configured to direct fluid to the actuation surface of the at least one deflection device to move the at least one deflection device from the retracted position to the extended position.