INJECTING A FLUID INTO A BOREHOLE AHEAD OF THE BIT
WORRALL, ROBERT, NICHOLAS, RUNIA, DOUWE, JOHANNES, SMITH, DAVID, GEORGE, LIVESEY
Year of Publication 06.02.2003
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Year of Publication 06.02.2003
Patent
STEERABLE ROTARY DRILL BIT ASSEMBLY WITH PILOT BIT
WORRALL, ROBERT, NICHOLAS, RUNIA, DOUWE, JOHANNES, SMITH, DAVID, GEORGE, LIVESEY
Year of Publication 30.01.2003
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Year of Publication 30.01.2003
Patent
STEERABLE ROTARY DRILL BIT ASSEMBLY WITH PILOT BIT
SMITH, DAVID GEORGE LIVESEY, RUNIA, DOUWE JOHANNES, WORRALL, ROBERT NICHOLAS
Year of Publication 30.01.2003
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Year of Publication 30.01.2003
Patent
Method and system of injecting a fluid into a borehole ahead of the bit
SMITH DAVID GEORGE LIVESEY, WORRALL ROBERT NICHOLAS, RUNIA DOUWE JOHANNES
Year of Publication 15.07.2009
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Year of Publication 15.07.2009
Patent
Método para introduzir um fluido para o interior de um furo de sondagem formado em uma formação de terra subterrânea, e, sistema para perfurar e para introduzir um fluido para o interior de um furo de sondagem em uma formação de terra subterrânea
DAVID GEORGE LIVESEY SMITH, ROBERT NICHOLAS WORRALL, DOUWE JOHANNES RUNIA
Year of Publication 28.09.2004
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Year of Publication 28.09.2004
Patent