Helge Krohn

Person

Sandnes, NO

People

Patents Grantslast 30 patents

Information Patent Grant
Device and method for drilling with continuous tool rotation and co...
- Patent number 9,708,854
- Issue date Jul 18, 2017
- West Drilling Products AS
- Helge Krohn
- E21 - EARTH DRILLING MINING
Information Patent Grant
Device for a downhole apparatus for machining of casings and also a...
- Patent number 8,931,555
- Issue date Jan 13, 2015
- West Production Technology AS
- Helge Krohn
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for withdrawal and insertion of a drill pipe string in a bor...
- Patent number 8,844,616
- Issue date Sep 30, 2014
- West Drilling Products AS
- Helge Krohn
- E21 - EARTH DRILLING MINING
Information Patent Grant
Device and method for drilling with continuous tool rotation and co...
- Patent number 8,794,351
- Issue date Aug 5, 2014
- West Drilling Products AS
- Helge Krohn
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rotary table device for a pipe string
- Patent number 8,726,984
- Issue date May 20, 2014
- West Drilling Products AS
- Helge Krohn
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Tool guide device for a drill floor
- Patent number 8,651,200
- Issue date Feb 18, 2014
- West Drilling Products AS
- Helge Krohn
- E21 - EARTH DRILLING MINING
Information Patent Grant
Separating device
- Patent number 8,235,123
- Issue date Aug 7, 2012
- Schlumberger Norge AS
- Øyvind Stokka
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Device and Method for Drilling with Continuous Tool Rotation and Co...
- Publication number 20140318868
- Publication date Oct 30, 2014
- WEST DRILLING PRODUCTS AS
- Helge Krohn
- E21 - EARTH DRILLING MINING
Information Patent Application
Device and Method for Drilling with Continuous Tool Rotation and Co...
- Publication number 20130192895
- Publication date Aug 1, 2013
- WEST DRILLING PRODUCTS AS
- Helge Krohn
- E21 - EARTH DRILLING MINING
Information Patent Application
Rotary Table Device for a Pipe String
- Publication number 20130014937
- Publication date Jan 17, 2013
- WEST DRILLING PRODUCTS AS
- Helge Krohn
- E21 - EARTH DRILLING MINING
Information Patent Application
Tool Guide Device for a Drill Floor
- Publication number 20120261195
- Publication date Oct 18, 2012
- WEST DRILLING PRODUCTS AS
- Helge Krohn
- E21 - EARTH DRILLING MINING
Information Patent Application
Device for a Downhole Apparatus for Machining of Casings and Also a...
- Publication number 20120118570
- Publication date May 17, 2012
- West Production Technology AS
- Helge Krohn
- E21 - EARTH DRILLING MINING
Information Patent Application
Method for Withdrawal and Insertion of a Drill Pipe String in a Bor...
- Publication number 20120000671
- Publication date Jan 5, 2012
- WEST DRILLING PRODUCTS AS
- Helge Krohn
- E21 - EARTH DRILLING MINING
Information Patent Application
Method for Control of a Drilling Operation
- Publication number 20110094800
- Publication date Apr 28, 2011
- Helge Krohn
- E21 - EARTH DRILLING MINING
Information Patent Application
Separating Device
- Publication number 20080245528
- Publication date Oct 9, 2008
- PETROLEUM TECHNOLOGY COMPANY AS
- Oyvind Stokka
- E21 - EARTH DRILLING MINING

Helge Krohn

Person

Patents Grantslast 30 patents

Device and method for drilling with continuous tool rotation and co...

Device for a downhole apparatus for machining of casings and also a...

Method for withdrawal and insertion of a drill pipe string in a bor...

Device and method for drilling with continuous tool rotation and co...

Rotary table device for a pipe string

Tool guide device for a drill floor

Separating device

Patents Applicationslast 30 patents

Device and Method for Drilling with Continuous Tool Rotation and Co...

Device and Method for Drilling with Continuous Tool Rotation and Co...

Rotary Table Device for a Pipe String

Tool Guide Device for a Drill Floor

Device for a Downhole Apparatus for Machining of Casings and Also a...

Method for Withdrawal and Insertion of a Drill Pipe String in a Bor...

Method for Control of a Drilling Operation

Separating Device