Injisering av et fluid i et borehull foran borkronen
SMITH DAVID GEORGE LIVESEY, WORRALL ROBERT NICHOLAS, RUNIA DOUWE JOHANNES
Year of Publication 15.12.2008
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Year of Publication 15.12.2008
Patent
mÉtodo para moldar in situ equipamento de poÇo
ROBERT NICHOLAS WORRALL, MIKE PETERS, MARTIN GERARD RENE BOSMA, KLISTHENIS DIMITRIADIS, ERIK KERST CORNELISSEN
Year of Publication 26.07.2011
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Year of Publication 26.07.2011
Patent
Steerable rotary drill bit assembly with pilot bit
RUNIA DOUWE JOHANNES,SMITH DAVID GEORGE LIVESEY,WORRALL ROBERT NICHOLAS
Year of Publication 07.11.2007
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Year of Publication 07.11.2007
Patent
SEPARATOR AND PROCESS FOR REMOVING SOLIDS FROM DRILLING LIQUIDS
EDEN, ROBERT DAVID, WORRALL, ROBERT NICHOLAS, COUSINS, ANTHONY ROBERT
Year of Publication 25.10.2007
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Year of Publication 25.10.2007
Patent
SEPARATOR AND PROCESS FOR REMOVING SOLIDS FROM DRILLING LIQUIDS
EDEN, ROBERT DAVID, WORRALL, ROBERT NICHOLAS, COUSINS, ANTHONY ROBERT
Year of Publication 25.10.2007
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Year of Publication 25.10.2007
Patent
Injecting a fluid into a borehole ahead of the bit
Runia, Douwe Johannes, Smith, David George Livesey, Worrall, Robert Nicholas
Year of Publication 16.10.2007
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Year of Publication 16.10.2007
Patent
Injecting a fluid into a borehole ahead of the bit
SMITH DAVID GEORGE LIVESEY, RUNIA DOUWE JOHANNES, WORRALL ROBERT NICHOLAS
Year of Publication 16.10.2007
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Year of Publication 16.10.2007
Patent
IN-SITU CASTING OF WELL EQUIPMENT
PETERS, MIKE, CORNELISSEN, ERIK KERST, DIMITRIADIS, KLISTHENIS, WORRALL, ROBERT NICHOLAS, BOSMA, MARTIN GERARD RENE
Year of Publication 13.04.2010
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Year of Publication 13.04.2010
Patent
Method of forming a corrugation in a tubular element
LOHBECK, WILHELMUS CHRISTIANUS MARIA, WORRALL, ROBERT NICHOLAS, STEWART, ROBERT BRUCE
Year of Publication 25.04.2007
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Year of Publication 25.04.2007
Patent
Steerable rotary drill bit assembly with pilot bit
SMITH DAVID GEORGE LIVESEY, RUNIA DOUWE JOHANNES, WORRALL ROBERT NICHOLAS
Year of Publication 24.04.2007
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Year of Publication 24.04.2007
Patent
Steerable rotary drill bit assembly with pilot bit
Runia, Douwe Johannes, Smith, David George Livesey, Worrall, Robert Nicholas
Year of Publication 24.04.2007
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Year of Publication 24.04.2007
Patent
Creating a well abandonment plug
Bosma, Martin Gerard Rene, Cornelissen, Erik Kerst, Dimitriadis, Klisthenis, Peters, Mike, Worrall, Robert Nicholas
Year of Publication 05.01.2010
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Year of Publication 05.01.2010
Patent
Creating a well abandonment plug
CORNELISSEN ERIK KERST, PETERS MIKE, WORRALL ROBERT NICHOLAS, DIMITRIADIS KLISTHENIS, BOSMA MARTIN GERARD RENE
Year of Publication 05.01.2010
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Year of Publication 05.01.2010
Patent