Greg MARSHALL

Person

Magnolia, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Dual direction lift gas valve with cavitation prevention
- Patent number 12,078,040
- Issue date Sep 3, 2024
- SILVERWELL TECHNOLOGY LTD.
- Joel David Shaw
- E21 - EARTH DRILLING MINING
Information Patent Grant
Debris barrier for hydraulic disconnect tools
- Patent number 8,770,300
- Issue date Jul 8, 2014
- Halliburton Energy Services, Inc.
- Joel D. Shaw
- E21 - EARTH DRILLING MINING
Information Patent Grant
Debris barrier for hydraulic disconnect tools
- Patent number 8,739,885
- Issue date Jun 3, 2014
- Halliburton Energy Services, Inc.
- Joel D. Shaw
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and methods of use for a whipstock anchor
- Patent number 7,963,341
- Issue date Jun 21, 2011
- Weatherford/Lamb, Inc.
- Aristeo Rios, III
- E21 - EARTH DRILLING MINING
Information Patent Grant
Well tool having enhanced packing element assembly
- Patent number 7,926,581
- Issue date Apr 19, 2011
- Halliburton Energy Services, Inc.
- Gregory S. Marshall
- E21 - EARTH DRILLING MINING
Information Patent Grant
Down-hole vane motor
- Patent number 7,172,039
- Issue date Feb 6, 2007
- Weatherford/Lamb, Inc.
- David Warren Teale
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Disconnect for use in a wellbore
- Patent number 7,100,696
- Issue date Sep 5, 2006
- Weatherford/Lamb, Inc.
- Greg Marshall
- E21 - EARTH DRILLING MINING
Information Patent Grant
Internal pressure indicator and locking mechanism for a downhole tool
- Patent number 6,851,491
- Issue date Feb 8, 2005
- Weatherford/Lamb, Inc.
- Gregory Marshall
- E21 - EARTH DRILLING MINING
Information Patent Grant
Multi-use tubing disconnect
- Patent number 6,408,946
- Issue date Jun 25, 2002
- Baker Hughes Incorporated
- Gregory S. Marshall
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DUAL DIRECTION LIFT GAS VALVE WITH CAVITATION PREVENTION
- Publication number 20240309738
- Publication date Sep 19, 2024
- Silverwell Technology Ltd.
- Joel David Shaw
- E21 - EARTH DRILLING MINING
Information Patent Application
DUAL DIRECTION LIFT GAS VALVE WITH CAVITATION PREVENTION
- Publication number 20240026761
- Publication date Jan 25, 2024
- Silverwell Technology Ltd.
- Joel David Shaw
- E21 - EARTH DRILLING MINING
Information Patent Application
Debris Barrier for Hydraulic Disconnect Tools
- Publication number 20130075110
- Publication date Mar 28, 2013
- Halliburton Energy Services, Inc.
- Joel D. SHAW
- E21 - EARTH DRILLING MINING
Information Patent Application
Debris barrier for hydraulic disconnect tools
- Publication number 20130043038
- Publication date Feb 21, 2013
- Halliburton Energy Services, Inc.
- Joel D. SHAW
- E21 - EARTH DRILLING MINING
Information Patent Application
WELL TOOL HAVING ENHANCED PACKING ELEMENT ASSEMBLY
- Publication number 20080223588
- Publication date Sep 18, 2008
- WELLDYNAMICS, INC.
- Gregory S. Marshall
- E21 - EARTH DRILLING MINING
Information Patent Application
Whipstock anchor
- Publication number 20060207771
- Publication date Sep 21, 2006
- Aristeo Rios
- E21 - EARTH DRILLING MINING
Information Patent Application
Down-hole vane motor
- Publication number 20050092525
- Publication date May 5, 2005
- David Warren Teale
- E21 - EARTH DRILLING MINING
Information Patent Application
Internal pressure indicator and locking mechanism for a downhole tool
- Publication number 20040060710
- Publication date Apr 1, 2004
- Gregory Marshall
- E21 - EARTH DRILLING MINING
Information Patent Application
Disconnect for use in a wellbore
- Publication number 20030062169
- Publication date Apr 3, 2003
- Greg Marshall
- E21 - EARTH DRILLING MINING

Greg MARSHALL

Person

Patents Grantslast 30 patents

Dual direction lift gas valve with cavitation prevention

Debris barrier for hydraulic disconnect tools

Debris barrier for hydraulic disconnect tools

Apparatus and methods of use for a whipstock anchor

Well tool having enhanced packing element assembly

Down-hole vane motor

Disconnect for use in a wellbore

Internal pressure indicator and locking mechanism for a downhole tool

Multi-use tubing disconnect

Patents Applicationslast 30 patents

DUAL DIRECTION LIFT GAS VALVE WITH CAVITATION PREVENTION

DUAL DIRECTION LIFT GAS VALVE WITH CAVITATION PREVENTION

Debris Barrier for Hydraulic Disconnect Tools

Debris barrier for hydraulic disconnect tools

WELL TOOL HAVING ENHANCED PACKING ELEMENT ASSEMBLY

Whipstock anchor

Down-hole vane motor

Internal pressure indicator and locking mechanism for a downhole tool

Disconnect for use in a wellbore