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公开(公告)号：US11598153B2
公开(公告)日：2023-03-07
申请号：US17270147
申请日：2019-09-10
IPC分类号： E21B10/567 , E21B10/55 , E21B10/43
摘要： A cutter element for a drill bit includes a base portion having a central axis, a first end, and a second end. In addition, the cutter element includes a cutting layer fixably mounted to the first end of the base portion. The cutting layer includes a cutting face distal the base portion. The cutting face includes an elongate raised ridge having a first end at a radially outer surface of the cutting layer and a second end at the radially outer surface of the cutting layer. The raised ridge defines a maximum height of the cutter element measured axially from the second end of the base portion to the cutting face. The cutting face also includes a first planar lateral side surface and a second planar lateral side surface. Each planar lateral side surface extends from the raised ridge to the radially outer surface of the cutting layer.
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公开(公告)号：US20220074271A1
公开(公告)日：2022-03-10
申请号：US17528751
申请日：2021-11-17
发明人： Reza Rahmani , Ryan Basson Graham
IPC分类号： E21B10/567 , E21B10/42
摘要： A cutter element for a drill bit includes a base portion having a central axis, a first end, a second end, and a radially outer surface extending axially from the first end to the second end. In addition, the cutter element includes a cutting layer fixably mounted to the first end of the base portion. The cutting layer includes a cutting face distal the base portion and a radially outer surface extending axially from the cutting face to the radially outer surface of the base portion. The cutting face includes a planar central region centered relative to the central axis and disposed in a plane oriented perpendicular to the central axis. Further, the cutting face includes a plurality of circumferentially-spaced cutting regions disposed about the planar central region. Still further, the cutting face includes a plurality of circumferentially-spaced relief regions disposed about the planar central region. The plurality of cutting regions and the plurality of relief regions are circumferentially arranged in an alternating manner such that one relief region is circumferentially disposed between two circumferentially adjacent cutting regions of the plurality of cutting regions. Each relief region is defined by a first edge at an intersection of the relief region and one circumferentially adjacent cutting region and a second edge at an intersection of the relief region and another circumferentially adjacent cutting region. The first edge and the second edge of each relief region are angularly spaced apart about the central axis by an angle α that ranges from 45° to 75°.
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公开(公告)号：US11220869B2
公开(公告)日：2022-01-11
申请号：US16481133
申请日：2018-02-01
IPC分类号： E21B10/567 , E21B10/43 , E21B10/52 , E21B10/627
摘要： An insert for a drill bit includes a base portion having a central axis and a formation engaging portion. The formation engaging portion includes an elongate peaked ridge, a first flanking surface extending from the peaked ridge, and a second flanking surface extending from the peaked ridge. The first flanking surface is defined by a first curve rotated about a first axis and the second flanking surface is defined by a second curve rotated about a second axis. The first axis and the second axis are disposed in a reference plane that bisects the base portion and contains the central axis of the base portion. The first axis is disposed at a first radius measured in the reference plane and the second axis is disposed at a second radius measured in the reference plane. The first radius is different from the second radius.
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公开(公告)号：US10787737B2
公开(公告)日：2020-09-29
申请号：US15769115
申请日：2016-11-09
IPC分类号： C23C16/32 , E21B10/567 , C23C16/04 , C23C16/27 , C23C16/30 , C23C30/00 , C23C26/02 , C23C28/04
摘要： A coating for a diamond table of a cutting element is described. The coating is employed to fill a plurality of voids left by the manufacturing process that compromise the integrity of the cutting element and the associated downhole tooling. The coating may comprise diamond nanoparticles in a metal matrix and may be used with or without a binder layer applied directly to the diamond table, the coating may alternatively be a pure diamond film coating, and may be employed to fill voids left by the manufacturing process.
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公开(公告)号：US20190234149A1
公开(公告)日：2019-08-01
申请号：US16378280
申请日：2019-04-08
摘要： A bend adjustment assembly includes a driveshaft housing, a driveshaft disposed in the driveshaft housing, a bearing mandrel coupled to the driveshaft, wherein the assembly includes a first position that provides a first deflection angle, wherein the bend adjustment assembly includes a second position that provides a second deflection angle that is different from the first deflection angle, and an actuator assembly configured to shift the bend adjustment assembly between the first position and the second position in response to a change in at least one of flowrate of a drilling fluid supplied to the downhole mud motor, pressure of the drilling fluid supplied to the downhole mud motor, and relative rotation between the driveshaft housing and the bearing mandrel, wherein the actuator assembly includes an actuator housing through which the bearing mandrel extends and an actuator piston configured to transfer torque between the bearing mandrel and the actuator housing.
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公开(公告)号：US10358872B2
公开(公告)日：2019-07-23
申请号：US16130557
申请日：2018-09-13
摘要： Apparatus and method for drilling a wellbore using non-synchronous oscillators. An apparatus for drilling a wellbore includes a tubing string and a bottom hole assembly coupled to the tubing string. The bottom hole assembly includes a first oscillator and a second oscillator. The first oscillator is configured to restrict fluid flow and induce pressure pulses in the tubing string at a first frequency. The second oscillator is configured to restrict fluid flow and induce pressure pulses in the tubing string at a second frequency. The first frequency is different from the second frequency.
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公开(公告)号：US10240399B2
公开(公告)日：2019-03-26
申请号：US15302445
申请日：2015-04-16
发明人： Reza Rahmani
IPC分类号： E21B10/56 , E21B10/567
摘要： A cutting element for a drill bit is advanceable into a subterranean formation to form a wellbore. The cutting element includes an element body having a face at an end thereof, and a ridge. The element body has a face at an end thereof. The face has a ramp and a pair of side regions thereon. The ramp has a curved edge along a periphery of the face and two sides. Each of the two sides extends from opposite ends of the curved edge and converges at a location along the face. The face has a chamfer along a peripheral edge thereof. The ridge is between the chamfer and the location. Each of the pair of side regions is positioned on opposite sides of the ridge and extends between the periphery, the ridge, and one of the two sides of the ramp whereby the chamfer engages a wall of the wellbore and extrudate is drawn along the pair of side regions.
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公开(公告)号：US20190010762A1
公开(公告)日：2019-01-10
申请号：US16130557
申请日：2018-09-13
CPC分类号： E21B7/24 , E21B28/00 , E21B43/126
摘要： Apparatus and method for drilling a wellbore using non-synchronous oscillators. An apparatus for drilling a wellbore includes a tubing string and a bottom hole assembly coupled to the tubing string. The bottom hole assembly includes a first oscillator and a second oscillator. The first oscillator is configured to restrict fluid flow and induce pressure pulses in the tubing string at a first frequency. The second oscillator is configured to restrict fluid flow and induce pressure pulses in the tubing string at a second frequency. The first frequency is different from the second frequency.
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公开(公告)号：US20190003262A1
公开(公告)日：2019-01-03
申请号：US16065652
申请日：2017-01-20
摘要： A drill bit includes a bit body and an internal plenum in the bit body. In addition, the drill bit includes a first flow passage extending from the internal plenum to a bit face. Still further, the drill bit includes a nozzle assembly secured to the bit body at a downhole end of the flow passage. The nozzle assembly has a central axis and includes an outer sleeve and an inner nozzle extending axially through the outer sleeve. The inner nozzle has a first end, a second end opposite the first end, and a radially inner surface extending axially from the first end to the second end. The radially inner surface defines a second flow passage. The inner nozzle also includes a choke disposed along the second flow passage and a side outlet extending radially from the outer surface to the inner surface.
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公开(公告)号：US20180171719A1
公开(公告)日：2018-06-21
申请号：US15849471
申请日：2017-12-20
IPC分类号： E21B7/24
CPC分类号： E21B7/24
摘要： A shock tool for reciprocating a drillstring includes an outer housing. The outer housing has a central axis, a first end, a second end opposite the first end, and a passage extending axially from the first end to the second end. In addition, the shock tool includes a mandrel assembly coaxially disposed in the passage of the outer housing and configured to move axially relative to the outer housing. The mandrel assembly has a first end axially spaced from the outer housing, a second end disposed in the outer housing, and a passage extending axially from the first end of the mandrel assembly to the second end of the mandrel assembly. The mandrel assembly includes a mandrel and a first annular piston fixably coupled to the mandrel. The first annular piston is disposed at the second end of the mandrel assembly and sealingly engages the outer housing.
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