Patents-Review.com
ClassID:

135213 ⎘

E21B10/18 - CPC Classification

Classification description:

Drill bits; Roller bits characterised by conduits or nozzles for drilling fluids

Recent Application in this class:
#1
20250250867
2025-08-07

ROTATING CHECK VALVE FOR IMPROVED DOWNHOLE OPERATIONS

 #2
20250188806
2025-06-12

EARTH-BORING TOOLS, NOZZLES, AND ASSOCIATED STRUCTURES, APPARATUS, AND METHODS

 #3
20240360725
2024-10-31

DRILL BIT FOR USE WITH INTENSIFIED FLUID PRESSURES

 #4
20240247550
2024-07-25

ROTARY CONE BIT COMPRISING AN IDENTIFICATION TAG

 #5
20240200408
2024-06-20

Rolling blade PDC bit

 #6
20230167689
2023-06-01

FIXED CUTTER DRILL BIT WITH HIGH FLUID PRESSURES

 #7
20230097242
2023-03-30

Drill bit for use with intensified fluid pressures

 #8
20220389765
2022-12-08

Earth-boring tools with through-the-blade fluid ports, and related methods

 #9
20220120139
2022-04-21

Earth-boring tool geometry and cutter placement and associated apparatus and methods

 #10
20210332647
2021-10-28

Concealed nozzle drill bit

 #11
20210277721
2021-09-09

Fixed cutter drill bit with high fluid pressures

 #12
20210140245
2021-05-13

Drill bit for use with intensified fluid pressures

 #13
20210140244
2021-05-13

Combined crushing super-variable-diameter drill bit for natural gas hydrate exploitation

 #14
20210131187
2021-05-06

ROCK BIT HAVING CUTTINGS CHANNELS FOR FLOW OPTIMIZATION

 #15
20210087886
2021-03-25

Hybrid bit with roller cones having inserts

 #16
20200362638
2020-11-19

A HYBRID BIT WITH ROLLER CONE HAVING INSERTS

 #17
20200300049
2020-09-24

Wellbore cleanout tool

 #18
20200300045
2020-09-24

Wellbore drill bit

 #19
20200181986
2020-06-11

Rotatable cutters and elements for use on earth-boring tools in subterranean boreholes, earth-boring tools including same, and related methods

 #20
20190352970
2019-11-21

Earth-boring tools having fixed blades and rotatable cutting structures and related methods

 #21
20190345775
2019-11-14

Drill bit nozzle and drill bit

 #22
20190284887
2019-09-19

Polycrystalline-diamond compact air bit

 #23
20180371841
2018-12-27

Cutting assembly for a boring device

 #24
20180355670
2018-12-13

HYBRID ROLLER-MILL BIT AND HYBRID ROLLER-DRAG BIT

 #25
20180202231
2018-07-19

Hybrid drill bit with counter-rotation cutters in center

 #26
20180112469
2018-04-26

Drill bit with self-directing nozzle and method of using same

 #27
20180044993
2018-02-15

Durable rock bit for blast hole drilling

 #28
20180010416
2018-01-11

Coiled tubing spiral venturi tool

 #29
20170342775
2017-11-30

Roller cone earth-boring rotary drill bits including disk heels and related systems and methods

 #30
20170254152
2017-09-07

By-pass fluid passageway for drill tool

 #31
20170254151
2017-09-07

Semi-sealed rotary drill tool

 #32
20170226811
2017-08-10

Drill bit

 #33
20160319603
2016-11-03

DRILL BIT MASK HAVING SUB-MILLIMETER SIZE APERTURES FOR REENTRANT CAVITATION JET DRILLING

 #34
20160290053
2016-10-06

Intergland grease

 #35
20160290052
2016-10-06

Drill bit having improved journal bearings

 #36
20160251902
2016-09-01

Hybrid drill bits having increased drilling efficiency

 #37
20160237752
2016-08-18

SUBSURFACE DRILLING TOOL

 #38
20160230467
2016-08-11

Hybrid drill bits

 #39
20160123084
2016-05-05

Tri cone drill bit

 #40
20160115739
2016-04-28

Flow bypass compensator for sealed bearing drill bits

 #41
20160002983
2016-01-07

Drilling tool

 #42
20150226007
2015-08-13

DRILL BIT FOR HORIZONTAL DIRECTIONAL DRILLING

 #43
20150197999
2015-07-16

Impregnated drill bits with integrated reamers

 #44
20150101868
2015-04-16

BALANCING OF DRILL BITS

 #45
20150075873
2015-03-19

SUBSURFACE DRILLING TOOL

 #46
20150075868
2015-03-19

Subsurface drilling tool

 #47
20150014060
2015-01-15

Tricone Bit Construction

 #48
20140166368
2014-06-19

Method and system for improving drilling speed by using drill speed vibration

 #49
20140116787
2014-05-01

Tricone rock bit for horizontal wells and hard formation wells

 #50
20130341035
2013-12-26

Method and apparatus for remotely changing flow profile in conduit and drilling bit

 #51
20130256038
2013-10-03

Roller cone drill bit with cuttings evacuator

 #52
20130220704
2013-08-29

High performance rock bit grease

 #53
20130133956
2013-05-30

Reverse circulation bit assembly

 #54
20130098688
2013-04-25

DRILL BITS HAVING ROTATING CUTTING STRUCTURES THEREON

 #55
20130075162
2013-03-28

ROLLER CONE BIT

 #56
20130032400
2013-02-07

Cooled-fluid systems and methods for pulsed-electric drilling

 #57
20130032397
2013-02-07

Systems and methods for pulsed-flow pulsed-electric drilling

 #58
20120298424
2012-11-29

Method and apparatus for a true geometry, durable rotating drill bit

 #59
20120204682
2012-08-16

Method and apparatus for a true geometry, durable rotating drill bit

 #60
20120193149
2012-08-02

Drill bit with enhanced hydraulics and erosion-shield cutting teeth

 #61
20120175106
2012-07-12

Drilling fluid diverting sub

 #62
20120061146
2012-03-15

Impregnated drill bits with integrated reamers

 #63
20110126674
2011-06-02

Methods of forming earth-boring tools having features for affecting cuttings flow

 #64
20110120780
2011-05-26

Method and apparatus for a true geometry, durable rotating drill bit

 #65
20110048809
2011-03-03

HIGH PERFORMANCE ROCK BIT GREASE

 #66
20110024197
2011-02-03

High shear roller cone drill bits

 #67
20100155147
2010-06-24

METHODS OF ENHANCING RETENTION FORCES BETWEEN INTERFERING PARTS, AND STRUCTURES FORMED BY SUCH METHODS

 #68
20100132510
2010-06-03

TWO-CONE DRILL BIT

 #69
20100108390
2010-05-06

APPARATUS AND METHOD FOR CONTROLLING FLUID FLOW IN A ROTARY DRILL BIT

 #70
20100089656
2010-04-15

Roller cone drill bits with improved fluid flow

 #71
20100006343
2010-01-14

Earth-boring tools having features for affecting cuttings flow

 #72
20090159340
2009-06-25

Rock bit with vectored hydraulic nozzle retention sleeves

 #73
20090152013
2009-06-18

Erosion resistant fluid passageways and flow tubes for earth-boring tools, methods of forming the same and earth-boring tools including the same

 #74
20090095537
2009-04-16

System, method, and apparatus for variable junk slot depth in drill bit body to alleviate balling

 #75
20090095536
2009-04-16

Rock bit with hydraulic configuration

 #76
20080236899
2008-10-02

Shrink-fit sleeve assembly for a drill bit, including nozzle assembly and method therefor

 #77
20080041633
2008-02-21

EARTH BIT HAVING A SCREEN

 #78
20070193781
2007-08-23

Roller cone drill bit with debris flow paths through associated support arms

 #79
20060266557
2006-11-30

Directable nozzle for rock drilling bits

 #80
20060213692
2006-09-28

Hydro-lifter rock bit with PDC inserts

 #81
20060113116
2006-06-01

Roller cone bits with reduced packing

 #82
20060054357
2006-03-16

Two-cone drill bit

 #83
20060054355
2006-03-16

Nozzle bore for PDC bits

 #84
20050217899
2005-10-06

Cutting structure based hydraulics

 #85
20050189148
2005-09-01

Nozzle bore for high flow rates

 #86
20050121235
2005-06-09

Dual property hydraulic configuration

 #87
18427507
2025-06-10

Hydrolock nozzle

 #88
18399489
2025-12-16

Method of thermal assembly of leg-cone assemblies into a rotating cone drill bit body

 #89
17200755
2021-10-12

Dual function pressure compensator for a lubricant reservoir of a sealed rock bit