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2014
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Invention
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Method and apparatus for limiting rotation of a drive shaft in a reverse direction. There is a br... |
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2012
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Invention
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Drive head for a wellhead. A drive head for a wellhead, the drive head comprising: a rod drive; a... |
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Invention
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Apparatuses for sealing against a well tubular. An apparatus for a wellhead, the apparatus defini... |
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Invention
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Stuffing box. A stuffing box for a wellhead comprises a stationary housing defining a passage for... |
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Invention
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Stuffing box employing tapered surface for a dynamic seal. A stuffing box for a wellhead, the stu... |
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2010
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Invention
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Stuffing box having axially facing annular surface for dynamic sealing. A stuffing box for a well... |
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2009
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Invention
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Gas dehydrator for a well. An apparatus is disclosed for removing water from gases produced from ... |
