James R. Chopty

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Aberdeen, GB

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Patents Grantslast 30 patents

Information Patent Grant
Surface gas evaluation during controlled pressure drilling
- Patent number 8,899,348
- Issue date Dec 2, 2014
- Weatherford/Lamb, Inc.
- Anthony Bruce Henderson
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Surface Gas Evaluation During Controlled Pressure Drilling
- Publication number 20110139464
- Publication date Jun 16, 2011
- Anthony Bruce Henderson
- E21 - EARTH DRILLING MINING