| 摘要 |
A traveling slip assembly of a snubbing unit is supported directly through mechanical fastening of two or more hydraulic actuators to one or mo re load members extending from a tubular snubbing structure for transfer of snubbing loads to a wellhead. Preferably, the load members are part of a hig h strength, lightweight unitary load plate which is mechanically fastened to a n outer flange on the snubbing structure, and isolated from the wellbore fluid s which permits the load plate's material properties to be selected without consideration of corrosion restrictions. More preferably, the hydraulic actuators are flanged and mechanically connected intermediate along their length to th e load plate and manufactured so as to ensure proper alignment of the travelin g and stationary slip assemblies and the tubular snubbing structure enabling ease of assembly, precise alignment and a lighter overall structure.
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