公开(公告)号：US12065883B2

公开(公告)日：2024-08-20

申请号：US18247111

申请日：2021-09-28

申请人： Schlumberger Technology Corporation

发明人： Scott D. McDonough ,  Venkatesh Karuppiah ,  Mahesha Kumar ,  Shelton Alsup

IPC分类号： E21B10/25 ,  E21B10/14

CPC分类号： E21B10/25 ,  E21B10/14

摘要： A hybrid bit includes fixed blades and wheel support structures. The wheel support structure includes a wheel inserted into a slot between a leading support and a trailing support. One or more shims fill a gap between a flange and the leading supports. An elongated seal between the wheel and the supports is provided to seal the wheel support.

公开(公告)号：US20240229571A9

公开(公告)日：2024-07-11

申请号：US18277722

申请日：2022-02-17

申请人： SANDVIK MINING AND CONSTRUCTION OY

发明人： Esa LAAKKOLA ,  Jussi PEURALA ,  Timo KELA

IPC分类号： E21B17/10 ,  E21B10/23 ,  E21B10/25

CPC分类号： E21B17/105 ,  E21B10/23 ,  E21B10/25 ,  E21B2200/01

摘要： A shank adapter, rock drilling machine and method of mounting a shank adapter of a rock drilling machine inside a slide bearing element. The shank adapter includes a coupling head and a rotation portion at its opposite ends, and a flushing portion located therebetween. Outer diameters of the coupling head and the rotation portion are both greater than outer diameters of portions of the shank adaptor located therebetween.

公开(公告)号：US20230374864A1

公开(公告)日：2023-11-23

申请号：US18122737

申请日：2023-03-17

申请人： SOUTHWEST PETROLEUM UNIVERSITY

发明人： Yi ZHOU ,  Fuxiao ZHANG ,  Xinlin LEI ,  Ruchen WANG ,  Wenchao SONG

IPC分类号： E21B10/25 ,  F16J15/43

CPC分类号： E21B10/25 ,  F16J15/43

摘要： A spiral magnetic fluid composite sealing structure of a roller bit comprising a cone leg and a roller, wherein the roller and the cone leg are in rotatable connection in a fitting manner through a roller inner hole and a cone leg shaft journal, a sealing groove is formed in an opening end of the roller inner hole, and a spiral magnetic fluid sealing assembly is arranged in the sealing groove. Through the arrangement of the spiral magnetic fluid sealing assembly, a spiral sand discharging effect is realized, compared with a passive sealing mode, the sealing performance is greatly improved by active sand discharging mode, and the service life of sealing is significantly prolonged; a slurry sealing effect of magnetic fluid seals is realized, resulting the sealing gap is tightly sealed under the magnetic action; in addition, the automatic compensation function of magnetic fluid can also be realized.

公开(公告)号：US11585158B2

公开(公告)日：2023-02-21

申请号：US16879855

申请日：2020-05-21

申请人： Caterpillar Inc.

发明人： Swetha Suresh ,  Brian Stuart Skauge ,  David Hakes ,  Chetan Vilas Dahiwal ,  Timothy A Thorson ,  Gary Clifford Yerby ,  Geoffrey Damien Chovanec ,  Thomas John Yaniak

IPC分类号： E21B10/24 ,  E21B10/25 ,  F16C33/66 ,  E21B10/14

摘要： An isolated lubrication system for a drill bit is disclosed. The system comprises a body having a cutting arm with a journal and a rotary cutter mounted on the journal. The system also comprises a reservoir in a body to contain a fluid lubricant that isolated from communication outside the body. The system also comprises multiple conduits in communication with the reservoir and with respect to each other. The multiple conduits facilitate lubrication between the journal and the rotary cutter, including the bearings, by means of a gravitational force and/or a centrifugal force acting of the fluid lubricant. Further, the system comprises a sealing system. The sealing system includes a sealing cap provided to the reservoir, a seal provided between the journal and the rotary cutter, and a stepped passageway provided in a clearance between the rotary cutter and a cutting arm of the body.

公开(公告)号：US11199050B2

公开(公告)日：2021-12-14

申请号：US17086398

申请日：2020-10-31

申请人： Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang) ,  Southwest Petroleum University

发明人： Guorong Wang ,  Yang Tang ,  Xin Jing ,  Qingyou Liu ,  Shouwei Zhou ,  Xushen Li ,  Lin Zhong ,  Qingping Li ,  Yufa He ,  Zhong Li ,  Yanjun Li ,  Hexing Liu ,  Jianglin Zhu ,  Jiang Lu ,  Leizhen Wang

IPC分类号： E21B10/32 ,  E21B10/43 ,  E21B41/00 ,  E21B10/18 ,  E21B10/16 ,  E21B10/25

摘要： The present invention relates to a combined crushing super-variable-diameter drill bit for natural gas hydrate exploitation, including a joint, an outer cylinder connected to the joint by thread, a nozzle I mounted in the outer cylinder, a mechanical locking mechanism, a blade telescoping mechanism, an end cap connected to the outer cylinder by thread, a seal ring IV mounted to the end cap, and a nozzle II mounted in the end cap by threaded connection. The present invention achieves integrated operation of conventional drilling and draw-back expanding, which can effectively solve the problems that the existing hydrate drill bit cannot drill a large borehole, cannot mechanically lock an extending position of the blade to stabilize the size of the borehole, and a single crushing method is inefficient.

公开(公告)号：US10851592B2

公开(公告)日：2020-12-01

申请号：US15662647

申请日：2017-07-28

申请人： Baker Hughes, a GE company, LLC

发明人： Jon David Schroder ,  John Abhishek Raj Bomidi ,  Kegan L. Lovelace

IPC分类号： E21B10/25 ,  E21B10/32 ,  E21B10/46 ,  E21B10/62 ,  E21B10/573 ,  E21B10/55

摘要： A rotatable element for an earth-boring tool in a subterranean borehole includes a rotatable element and a stationary element. The rotatable element and stationary element include a seal arrangement between the rotatable element and the stationary element. The seal arrangement encloses a volume that remains substantially constant as the rotatable element moves relative to the stationary element.

公开(公告)号：US20200063870A1

公开(公告)日：2020-02-27

申请号：US16607884

申请日：2017-05-11

申请人： VALQUA, LTD.

发明人： Takahiro YAMAMOTO ,  Chao JING ,  Mitsuru MINAMI ,  Akira UEDA ,  Yuki NORIDUKI

IPC分类号： F16J15/3284 ,  E21B10/25

摘要： A seal structure includes a ring-shaped seal member. The seal member is disposed in a seal groove. The case includes a low-pressure lateral face in a cross section of the seal structure, the cross section being taken along an imaginary plane in parallel with a shaft axial direction of the shaft and passing through a center line of the shaft. The seal member includes a first protruding portion. The first protruding portion protrudes from a main portion having a bottom face in contact with the low-pressure lateral face, and has a shape such that the first protruding portion extends toward the shaft as the first protruding portion extends toward the low-pressure side. The first protruding portion includes a tip. The first protruding portion includes a contact region in contact with the shaft. The tip is closer to the low-pressure side than the contact region is.

公开(公告)号：US10519720B2

公开(公告)日：2019-12-31

申请号：US15429874

申请日：2017-02-10

申请人： Baker Hughes, a GE company, LLC

发明人： Michal Benes ,  John Abhishek Raj Bomidi ,  Jon David Schroder

IPC分类号： E21B10/22 ,  E21B10/24 ,  F16C17/04 ,  F16C19/54 ,  F16C25/08 ,  F16C33/04 ,  F16C33/36 ,  E21B10/25 ,  F16C21/00 ,  F16C17/26 ,  F16C19/30 ,  E21B10/28 ,  F16C17/02

摘要： Bearing systems configured for use on a downhole tool may include a tensioner bolt having a complementary nut, the tensioner bolt and nut sized and shaped to secure the rolling cutter member to a head. A radial bearing may include an annular sleeve sized and shaped to surround the head. A shaft washer may be sized and shaped to surround the head between an enlarged head of the tensioner bolt and the annular sleeve. A bearing element may be configured for positioning proximate the head, the bearing element comprising an upper surface configured for sliding, frictional contact with a lower surface of the shaft washer.

公开(公告)号：US10480250B2

公开(公告)日：2019-11-19

申请号：US15548122

申请日：2015-03-06

申请人： Halliburton Energy Services, Inc.

发明人： Robin Brian Milligan

IPC分类号： E21B10/24 ,  E21B10/25

摘要： The disclosure relates to a bore tube for a pressure compensation system in a roller cone drill bit. The bore tube includes a bit body having at least one support arm extending therefrom, a lubricant chamber in each support arm, a bore in each support arm extending from to the lubricant chamber to an exterior surface of each support arm, a tube in the bore of each support arm, and a floating bead in the tube and operable to move axially within the tube in response to a pressure of the environment surrounding the roller cone drill bit.

公开(公告)号：US10458186B2

公开(公告)日：2019-10-29

申请号：US14911447

申请日：2013-09-10

申请人： Halliburton Energy Services, Inc.

发明人： Mark E. Williams

IPC分类号： E21B10/25 ,  F16J15/02 ,  E21B10/22 ,  F16J15/00 ,  F16J15/16

摘要： A well tool can include inner and outer seals interposed between components of the well tool, and a circumferential spacer which prevents contact between the inner seal and one of the components which displaces relative to the inner seal. A method of sealing between components of a well tool can include sealingly engaging an outer seal between the components, and disposing an inner seal between the components, including spacing the inner seal away from one of the components, whereby the inner seal sealingly contacts one of the components only after the well tool is disposed in a well. A drill bit can include inner and outer seals interposed between components of the drill bit, and a circumferential spacer which prevents contact between the inner seal and one of the components, the circumferential spacer being positioned upstream of the outer seal relative to a lubricant supply of the drill bit.