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2016
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Invention
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Drill stem safety valve actuator. A drill stem safety valve actuator that eliminates the need for... |
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Invention
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Modular stop for valve. A modular stop is provided for ball valves, such as those used as drill s... |
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2004
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Invention
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Apparatus and method for cleaning out sand from an underbalanced hydrocarbon producing well. An a... |
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Invention
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Apparatus and method for cleaning out sand from an underbalanced hydrocarbon producing well. The ... |
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G/S
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Oilfield tools and equipment, namely, combination valve-swivel assemblies for underbalanced sand ... |
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1996
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Invention
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Dual ball valve assembly. A dual ball valve assembly which includes a one piece tubular valve hou... |
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Invention
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Rotary valve actuator. A rotary valve actuator for actuating a valve that must be rotated between... |
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Invention
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Method of securing a valve seat member within a tubular housing and a ball valve assembly. A meth... |
