Wanchai Ratanasirigulchai

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Controlling transient pressure conditions in a wellbore
- Patent number 7,284,612
- Issue date Oct 23, 2007
- Schlumberger Technology Corporation
- Wanchai Ratanasirigulchai
- F42 - AMMUNITION BLASTING

Patents Applicationslast 30 patents

Information Patent Application
Controlling transient pressure conditions in a wellbore
- Publication number 20070034369
- Publication date Feb 15, 2007
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Wanchai Ratanasirigulchai
- F42 - AMMUNITION BLASTING
Information Patent Application
Flame and Heat Resistant Oilfield Tools
- Publication number 20050247450
- Publication date Nov 10, 2005
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Wanchai Ratanasirigulchai
- E21 - EARTH DRILLING MINING
Information Patent Application
Controlling Transient Pressure Conditions In A Wellbore
- Publication number 20040231840
- Publication date Nov 25, 2004
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Wanchai Ratanasirigulchai
- F42 - AMMUNITION BLASTING