Thad Andrews

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Tulsa, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Downhole barrier valve
- Patent number 8,113,286
- Issue date Feb 14, 2012
- Baker Hughes Incorporated
- Clifford H. Beall
- E21 - EARTH DRILLING MINING
Information Patent Grant
Electric wireline insert safety valve
- Patent number 7,967,074
- Issue date Jun 28, 2011
- Baker Hughes Incorporated
- Gary B. Lake
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Wellbore Shut Off Valve with Hydraulic Actuator System
- Publication number 20100300702
- Publication date Dec 2, 2010
- BAKER HUGHES INCORPORATED
- Thad D. Andrews
- E21 - EARTH DRILLING MINING
Information Patent Application
Electric Wireline Insert Safety Valve
- Publication number 20100025045
- Publication date Feb 4, 2010
- BAKER HUGHES INCORPORATED
- Gary B. Lake
- E21 - EARTH DRILLING MINING
Information Patent Application
Downhole Barrier Valve
- Publication number 20080223581
- Publication date Sep 18, 2008
- Clifford H. Beall
- E21 - EARTH DRILLING MINING