Patents-Review.com
ClassID:

135223 ⎘

E21B10/28 - CPC Classification

Classification description:

Drill bits; Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters

Sub-classes:
Recent Application in this class:
#1
20250361777
2025-11-27

CONNECTOR ASSEMBLY FOR USE WITH MICROTUNNELING APPARATUS

 #2
20250012151
2025-01-09

Reamer Drill Bit Device

 #3
20240401413
2024-12-05

DRILL BITS AND OTHER DOWNHOLE DRILLING TOOLS WITH NON-CYLINDRICAL CUTTER POCKETS

 #4
20230212916
2023-07-06

WEAR SUPPORT ASSEMBLIES FOR RAISE BORING TOOLS

 #5
20220056801
2022-02-24

Cutter head arrangement

 #6
20210372202
2021-12-02

Reamer Wear Protection Assembly and Method

 #7
20210222499
2021-07-22

Service connector

 #8
20210180408
2021-06-17

DRILL BIT WITH AUXILIARY CHANNEL OPENINGS

 #9
20210025243
2021-01-28

Hole opener for directional drilling

 #10
20210017814
2021-01-21

Slide reamer and stabilizer tool

 #11
20200270952
2020-08-27

Tapered joint for securing cone arm in hole opener

 #12
20200018163
2020-01-16

Shaft enlargement arrangement for a boring system

 #13
20200011134
2020-01-09

BI-MILL FOR MILLING AN OPENING THROUGH A WELLBORE CASING AND IN A PREPLANNED LATERAL DRILLING PATH IN DEPARTURE FROM THE WELLBORE AXIS

 #14
20190368273
2019-12-05

Horizontal directional reaming

 #15
20190301246
2019-10-03

Bidirectional cluster hammer reamer

 #16
20190226284
2019-07-25

Slide reamer and stabilizer tool

 #17
20190040687
2019-02-07

Wellbore reaming tool having shear cutters and gouging cutters

 #18
20180371841
2018-12-27

Cutting assembly for a boring device

 #19
20180363381
2018-12-20

Weight-on-bit self-adjusting drill bit

 #20
20180283105
2018-10-04

Method and system for a hole opener

 #21
20180266179
2018-09-20

Hammer reamer for expanding a pilot bore

 #22
20180223600
2018-08-09

Raise boring head for rotary boring

 #23
20180119495
2018-05-03

Slide reamer and stabilizer tool

 #24
20180094491
2018-04-05

Apparatus and method of alleviating spiraling in boreholes

 #25
20170321487
2017-11-09

Reamer with replaceable rolling cutters

 #26
20170260812
2017-09-14

Method and system for a hole opener

 #27
20170241209
2017-08-24

Bearings for downhole tools, downhole tools incorporating such bearings, and related methods

 #28
20170241208
2017-08-24

Bearings for downhole tools, downhole tools incorporating such bearings, and related methods

 #29
20170167202
2017-06-15

Reamer assembly

 #30
20170045156
2017-02-16

Method and device for trenchless pipe laying

 #31
20160369568
2016-12-22

TWO-PHASE MANUFACTURE OF METAL MATRIX COMPOSITES

 #32
20160305189
2016-10-20

Drill head for expanding a pilot bore in order to create a borehole

 #33
20160298393
2016-10-13

Process for constructing a well for exploiting a reservoir under a sea-bed or ocean-bed

 #34
20160251902
2016-09-01

Hybrid drill bits having increased drilling efficiency

 #35
20160230467
2016-08-11

Hybrid drill bits

 #36
20160208559
2016-07-21

Wellbore Conditioning System

 #37
20160208558
2016-07-21

Boring apparatus and method

 #38
20160138342
2016-05-19

Method and apparatus for reaming and/or stabilizing boreholes in drilling operations

 #39
20160121375
2016-05-05

Pipe cleaning system and method

 #40
20160053548
2016-02-25

Slide reamer and stabilizer tool

 #41
20160047169
2016-02-18

Downhole motor

 #42
20150330148
2015-11-19

PUSH REAMER

 #43
20150308196
2015-10-29

CASING DRILLING UNDER REAMER APPARATUS AND METHOD

 #44
20150276090
2015-10-01

Casing puller

 #45
20150211304
2015-07-30

Method and system for a hole opener

 #46
20150122550
2015-05-07

Subsurface formation cutter

 #47
20140338984
2014-11-20

Hole opener bearing arrangement

 #48
20140338979
2014-11-20

Reamer with replaceable rolling cutters

 #49
20140305708
2014-10-16

Reamer with replaceable cutters

 #50
20140262536
2014-09-18

DOWNHOLE CUTTING TOOLS HAVING HYBRID CUTTING STRUCTURES

 #51
20140119835
2014-05-01

Casing puller

 #52
20130248254
2013-09-26

Underground reamer

 #53
20130133954
2013-05-30

Roller reamer compound wedge retention

 #54
20120279784
2012-11-08

Slide reamer and stabilizer tool

 #55
20110180331
2011-07-28

Rock bit

 #56
20110079443
2011-04-07

Hole opener with hybrid reaming section

 #57
20110079442
2011-04-07

HOLE OPENER WITH HYBRID REAMING SECTION

 #58
20110079441
2011-04-07

Hole opener with hybrid reaming section

 #59
20110079440
2011-04-07

Hole opener with hybrid reaming section and method of making

 #60
20100319993
2010-12-23

Downhole tool leg retention methods and apparatus

 #61
20100252327
2010-10-07

Drill bits with cutters to cut high side of wellbores

 #62
20100252326
2010-10-07

Modular system for a back reamer and method

 #63
20100206638
2010-08-19

Hole opener assembly and a cone arm forming a part thereof

 #64
20100116556
2010-05-13

Pilot reamer with composite framework

 #65
20100096188
2010-04-22

REAMER ROLLER CONE BIT WITH STEPPED REAMER CUTTER PROFILE

 #66
20100078223
2010-04-01

PLATE STRUCTURE FOR EARTH-BORING TOOLS, TOOLS INCLUDING PLATE STRUCTURES AND METHODS OF FORMING SUCH TOOLS

 #67
20090218140
2009-09-03

Reamer with balanced cutting structure for use in a wellbore

 #68
20090178852
2009-07-16

Drilling assembly, drilling reamer arm assembly, and methods of drilling

 #69
20090166093
2009-07-02

Reamer with stabilizers for use in a wellbore

 #70
20090159338
2009-06-25

Reamer with improved hydraulics for use in a wellbore

 #71
20070175664
2007-08-02

Rock drill bit assembly

 #72
20060060384
2006-03-23

Interchangeable reamer

 #73
20050039953
2005-02-24

Blockless reamer

 #74
15633956
2018-10-30

Cutting assembly for a boring device

 #75
15231727
2018-06-12

Hammer reamer for expanding a pilot bore