Patents-Review.com
ClassID:

135135 ⎘

E21B4/10 - CPC Classification

Classification description:

Drives for drilling, used in the borehole; Down-hole impacting means, e.g. hammers continuous unidirectional rotary motion of shaft or drilling pipe effecting consecutive impacts

Recent Application in this class:
#1
20240175323
2024-05-30

TORQUE-ADAPTIVE IMPACT TOOL SUITABLE FOR PDC BIT

 #2
20230175320
2023-06-08

DOWNHOLE WIRELINE TOOL

 #3
20230020998
2023-01-19

Well drilling tool and method for determining parameter thereof

 #4
20230003084
2023-01-05

Well drilling acceleration tool

 #5
20220412165
2022-12-29

Drilling tool

 #6
20210324735
2021-10-21

System and method for dual telemetry noise reduction

 #7
20210238996
2021-08-05

System and method for transmitting information in a borehole

 #8
20210207437
2021-07-08

Ball transfer mechanism with polycrystalline diamond bearing support

 #9
20200232282
2020-07-23

Boring apparatus and method

 #10
20200088028
2020-03-19

System and method for dual telemetry noise reduction

 #11
20190292907
2019-09-26

System and method for transmitting information in a borehole

 #12
20190100965
2019-04-04

Down-Hole Vibrational Oscillator

 #13
20180355714
2018-12-13

System and method for controlling linear movement using a tapered MR valve

 #14
20180291687
2018-10-11

Boring apparatus and method

 #15
20180283101
2018-10-04

HAMMER DRILL

 #16
20180274298
2018-09-27

Percussion device

 #17
20180252040
2018-09-06

Up drill apparatus and method

 #18
20180163474
2018-06-14

Downhole mechanical percussive hammer drill assembly

 #19
20180142552
2018-05-24

System and method for controlling linear movement using a tapered MR valve

 #20
20180128100
2018-05-10

System and method for dual telemetry acoustic noise reduction

 #21
20180119491
2018-05-03

Impact-driven downhole motors

 #22
20170356248
2017-12-14

Hammer drill mechanism

 #23
20170342781
2017-11-30

Regulating device and a method of using same in a borehole

 #24
20170306699
2017-10-26

Downhole motor, drill string provided with such a motor and method of releasing a stuck drill bit attached to such a motor

 #25
20170016289
2017-01-19

Hydraulically actuated apparatus for generating pressure pulses in a drilling fluid

 #26
20160108725
2016-04-21

System and method for dual telemetry acoustic noise reduction

 #27
20160108677
2016-04-21

Up drill apparatus and method

 #28
20160108674
2016-04-21

Hammer drill

 #29
20160040528
2016-02-11

System and method for controlling linear movement using a tapered MR valve

 #30
20150315846
2015-11-05

Downhole drilling assembly with motor powered hammer and method of using same

 #31
20150260031
2015-09-17

System and method for steering in a downhole environment using vibration modulation

 #32
20150107904
2015-04-23

Systems and methods for producing forced axial vibration of a drillstring

 #33
20140338978
2014-11-20

Wellbore percussion adapter and tubular connection

 #34
20140054090
2014-02-27

Mechanical force generator for a downhole excitation apparatus

 #35
20130306379
2013-11-21

Annulus ring hole drill

 #36
20130264119
2013-10-10

Hammer drill

 #37
20120247757
2012-10-04

Downhole oscillator

 #38
20110031020
2011-02-10

Wellbore percussion adapter and tubular connection

 #39
20050241859
2005-11-03

Bedrock drilling and excavating apparatus

 #40
20050230153
2005-10-20

Device for simulataneously casing a hole while drilling

 #41
16804145
2022-04-05

Intelligent blast-hole drill bit with redundant transducer wear sensor and remote recessed reflector antenna

 #42
15660611
2020-03-31

Intellegent blast-hole drill bit with redundant transducer wear sensor and remote recessed reflector antenna