Membership
Tour
Register
Log in
combined with surface drive
Follow
Industry
CPC
E21B4/20
This industry / category may be too specific. Please go to a parent level for more data
Parent Industries
E
FIXED CONSTRUCTIONS
E21
Mining
E21B
EARTH DRILLING
E21B4/00
Drives used in the borehole
Current Industry
E21B4/20
combined with surface drive
Industries
Overview
Organizations
People
Information
Impact
Please log in for detailed analytics
Patents Grants
last 30 patents
Information
Patent Grant
Hydraulically driven rotating string reamer and methods
Patent number
11,905,794
Issue date
Feb 20, 2024
Saudi Arabian Oil Company
Salem Alharbi
E21 - EARTH DRILLING MINING
Information
Patent Grant
Active alternator control in a downhole tool string
Patent number
11,643,909
Issue date
May 9, 2023
Schlumberger Technology Corporation
Mustafa Kamil Guven
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Fluid operated drilling device and a method for drilling a hole usi...
Patent number
11,306,538
Issue date
Apr 19, 2022
PIRKAN LAATUPALVELU OY
Juhani Välisalo
E21 - EARTH DRILLING MINING
Information
Patent Grant
Active alternator control in a downhole tool string
Patent number
10,947,819
Issue date
Mar 16, 2021
Schlumberger Technology Corporation
Mustafa Kamil Guven
F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information
Patent Grant
System and method for downlink communication
Patent number
10,844,703
Issue date
Nov 24, 2020
SANVEAN TECHNOLOGIES LLC
Stephen Jones
E21 - EARTH DRILLING MINING
Information
Patent Grant
Vertical shaft drilling rig using novel drilling method
Patent number
10,202,807
Issue date
Feb 12, 2019
Jianbin Li
E21 - EARTH DRILLING MINING
Information
Patent Grant
Dual torque transfer for top drive system
Patent number
10,132,118
Issue date
Nov 20, 2018
Weatherford Technology Holdings, LLC
Federico Amezaga
E21 - EARTH DRILLING MINING
Information
Patent Grant
Inverted wellbore drilling motor
Patent number
10,006,249
Issue date
Jun 26, 2018
Schlumberger Technology Corporation
Edward Parkin
E21 - EARTH DRILLING MINING
Information
Patent Grant
Downhole drilling assembly with motor powered hammer and method of...
Patent number
10,000,970
Issue date
Jun 19, 2018
National-Oilwell DHT, L.P.
Rory McCrae Tulloch
E21 - EARTH DRILLING MINING
Information
Patent Grant
Horizontal directional drilling system
Patent number
9,556,691
Issue date
Jan 31, 2017
Vermeer Manufacturing Company
Michael D. Van Zee
E21 - EARTH DRILLING MINING
Information
Patent Grant
Bit face orientation control in drilling operations
Patent number
7,404,454
Issue date
Jul 29, 2008
Varco I/P, Inc.
Kent Erin Hulick
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and device for drilling holes in soil or rock material
Patent number
7,290,624
Issue date
Nov 6, 2007
“ALWAG” Tunnelausbau Gesellschaft m.b.H.
Josef Mocivnik
E21 - EARTH DRILLING MINING
Information
Patent Grant
Pneumatic rock-boring device and method for horizontal drilling usi...
Patent number
7,111,695
Issue date
Sep 26, 2006
Tracto-Technik GmbH
Franz-Josef Puttmann
E21 - EARTH DRILLING MINING
Information
Patent Grant
Pneumatic rock-boring device and method for starting such a device
Patent number
7,093,671
Issue date
Aug 22, 2006
Tracto-Technik GmbH
Franz-Josef Puttmann
E21 - EARTH DRILLING MINING
Information
Patent Grant
Acoustic flow pulsing apparatus and method for drill string
Patent number
7,059,426
Issue date
Jun 13, 2006
Lewal Drilling Ltd.
Bruno Walter
E21 - EARTH DRILLING MINING
Information
Patent Grant
Drilling systems
Patent number
7,040,417
Issue date
May 9, 2006
CCT Technologies, L.L.C.
Paul B. Campbell
E21 - EARTH DRILLING MINING
Information
Patent Grant
Acoustic flow pulsing apparatus and method for drill string
Patent number
6,910,542
Issue date
Jun 28, 2005
Lewal Drilling Ltd.
Bruno Walter
E21 - EARTH DRILLING MINING
Information
Patent Grant
Piloted drill barrel and method of using same
Patent number
6,892,834
Issue date
May 17, 2005
August H. Beck, III
E21 - EARTH DRILLING MINING
Information
Patent Grant
Assembly and floatation method for drilling drivepipe
Patent number
6,715,962
Issue date
Apr 6, 2004
Smith International, Inc.
Billy J. Roberts
E21 - EARTH DRILLING MINING
Information
Patent Grant
Well casing installation and removal apparatus and method
Patent number
6,588,509
Issue date
Jul 8, 2003
John F. Allyn
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and apparatus for directional boring under mixed conditions
Patent number
6,588,516
Issue date
Jul 8, 2003
Vermeer Manufacturing Company
Randy R. Runquist
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus for directional boring under mixed conditions
Patent number
6,454,025
Issue date
Sep 24, 2002
Vermeer Manufacturing Company
Randy R. Runquist
E21 - EARTH DRILLING MINING
Information
Patent Grant
Reverse circulation drilling system with bit locked underreamer arms
Patent number
6,394,197
Issue date
May 28, 2002
Ardis L. Holte
E21 - EARTH DRILLING MINING
Information
Patent Grant
Casing installation and removal apparatus and method
Patent number
6,371,209
Issue date
Apr 16, 2002
John F. Allyn
E21 - EARTH DRILLING MINING
Information
Patent Grant
Reciprocating rotary drilling motor
Patent number
6,315,063
Issue date
Nov 13, 2001
Leo A. Martini
E21 - EARTH DRILLING MINING
Information
Patent Grant
Reverse circulation drilling system with bit locked underreamer arms
Patent number
6,209,665
Issue date
Apr 3, 2001
Ardis L. Holte
E21 - EARTH DRILLING MINING
Information
Patent Grant
Coupling piece for use at simultaneous earth and/or rock drilling w...
Patent number
6,148,934
Issue date
Nov 21, 2000
Atlas Copco Craelius AB
Tomas Borg
E21 - EARTH DRILLING MINING
Information
Patent Grant
Device for drilling a bore hole in the ground
Patent number
6,102,139
Issue date
Aug 15, 2000
Wirth Maschinen- und Bohrgerate-Fabrik GmbH
Fritz Tibussek
E21 - EARTH DRILLING MINING
Information
Patent Grant
Actively controlled rotary steerable system and method for drilling...
Patent number
6,092,610
Issue date
Jul 25, 2000
Schlumberger Technology Corporation
Alexandre G. E. Kosmala
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus and method for milling a well casing
Patent number
5,988,272
Issue date
Nov 23, 1999
Ronald James Bruce
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
ACTIVE ALTERNATOR CONTROL IN A DOWNHOLE TOOL STRING
Publication number
20210246765
Publication date
Aug 12, 2021
SCHLUMBERGER TECHNOLOGY CORPORATION
Mustafa Kamil Guven
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
FLUID OPERATED DRILLING DEVICE AND A METHOD FOR DRILLING A HOLE USI...
Publication number
20200347678
Publication date
Nov 5, 2020
PIRKAN LAATUPALVELU OY
Juhani VÄLISALO
E21 - EARTH DRILLING MINING
Information
Patent Application
DUAL TORQUE TRANSFER FOR TOP DRIVE SYSTEM
Publication number
20180252041
Publication date
Sep 6, 2018
Federico AMEZAGA
E21 - EARTH DRILLING MINING
Information
Patent Application
ACTIVE ALTERNATOR CONTROL IN A DOWNHOLE TOOL STRING
Publication number
20180163514
Publication date
Jun 14, 2018
SCHLUMBERGER TECHNOLOGY CORPORATION
Mustafa Kamil Guven
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
SYSTEM AND METHOD FOR DOWNLINK COMMUNICATION
Publication number
20170254190
Publication date
Sep 7, 2017
SANVEAN TECHNOLOGIES LLC
Stephen JONES
E21 - EARTH DRILLING MINING
Information
Patent Application
MULTI-START THREAD CONNECTION FOR DOWNHOLE TOOLS
Publication number
20170074050
Publication date
Mar 16, 2017
BAKER HUGHES INCORPORATED
Harald GRIMMER
E21 - EARTH DRILLING MINING
Information
Patent Application
Vertical Shaft Drilling Rig Using Novel Drilling Method
Publication number
20160369566
Publication date
Dec 22, 2016
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO., LTD.
Jianbin LI
E21 - EARTH DRILLING MINING
Information
Patent Application
Dynamic Point-the-bit Rotary Steerable Drilling Tool and Measuring...
Publication number
20160281492
Publication date
Sep 29, 2016
China University of Petroleum
Weiliang Wang
E21 - EARTH DRILLING MINING
Information
Patent Application
Inverted Wellbore Drilling Motor
Publication number
20160024846
Publication date
Jan 28, 2016
SCHLUMBERGER TECHNOLOGY CORPORATION
Edward Parkin
E21 - EARTH DRILLING MINING
Information
Patent Application
DOWNHOLE DRILLING ASSEMBLY WITH MOTOR POWERED HAMMER AND METHOD OF...
Publication number
20150315846
Publication date
Nov 5, 2015
NATIONAL OILWELL DHT, L.P.
Rory McCrae Tulloch
E21 - EARTH DRILLING MINING
Information
Patent Application
HORIZONTAL DIRECTIONAL DRILLING SYSTEM
Publication number
20140284111
Publication date
Sep 25, 2014
Vermeer Manufacturing Company
Michael D. Van Zee
E21 - EARTH DRILLING MINING
Information
Patent Application
Pneumatic down-the-hole drill
Publication number
20140224544
Publication date
Aug 14, 2014
Jarmo Leppanen
E21 - EARTH DRILLING MINING
Information
Patent Application
ROTATION UNIT, ROCK DRILLING UNIT AND METHOD FOR ROCK DRILLING
Publication number
20140034387
Publication date
Feb 6, 2014
SANDVIK MINING AND CONSTRUCTION OY
Tapio Ukonjarvi
E21 - EARTH DRILLING MINING
Information
Patent Application
Bit face orientation control in drilling operations
Publication number
20070256861
Publication date
Nov 8, 2007
Kent Erin Hulick
E21 - EARTH DRILLING MINING
Information
Patent Application
Method and device for drilling holes in soil or rock material
Publication number
20070023204
Publication date
Feb 1, 2007
Josef Mocivnik
E21 - EARTH DRILLING MINING
Information
Patent Application
Driver
Publication number
20060000645
Publication date
Jan 5, 2006
Karl Axel Stjernstrom
E21 - EARTH DRILLING MINING
Information
Patent Application
Acoustic flow pulsing apparatus and method for drill string
Publication number
20050236190
Publication date
Oct 27, 2005
Lewal Drilling Ltd.
Bruno Walter
E21 - EARTH DRILLING MINING
Information
Patent Application
Drilling systems
Publication number
20050126822
Publication date
Jun 16, 2005
Paul B. Campbell
E21 - EARTH DRILLING MINING
Information
Patent Application
Down-the-hole drill hammer
Publication number
20050045385
Publication date
Mar 3, 2005
Karl Axel Stjernstrom
E21 - EARTH DRILLING MINING
Information
Patent Application
Method and apparatus for through rotary sub-sea pile-driving
Publication number
20050006105
Publication date
Jan 13, 2005
Douglas B Bell
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
Pneumatic rock-boring device and method for starting such a device
Publication number
20040069533
Publication date
Apr 15, 2004
Franz-Josef Puttmann
E21 - EARTH DRILLING MINING
Information
Patent Application
Pneumatic rock-boring device and method for horizontal drilling usi...
Publication number
20040060740
Publication date
Apr 1, 2004
Franz-Josef Puttmann
E21 - EARTH DRILLING MINING
Information
Patent Application
Method and apparatus for directional boring under mixed conditions
Publication number
20030024739
Publication date
Feb 6, 2003
Vermeer Manufacturing Company
Randy R. Runquist
E21 - EARTH DRILLING MINING
Information
Patent Application
Well casing installation and removal apparatus and method
Publication number
20020157868
Publication date
Oct 31, 2002
John F. Allyn
E21 - EARTH DRILLING MINING
Information
Patent Application
Reverse circulation drilling system with bit locked underreamer arms
Publication number
20020139585
Publication date
Oct 3, 2002
Ardis L. Holte
E21 - EARTH DRILLING MINING
Information
Patent Application
Assembly and floatation method for drilling drivepipe
Publication number
20010030045
Publication date
Oct 18, 2001
Billy J. Roberts
E21 - EARTH DRILLING MINING