| 摘要 |
A Pipe Guide Stripper Rubber stripper of modified Shaffer design has a resilient, molded frusto-conical stripper unit that mounts within a conventional standing compression shell supported on the drill or production platform. The molded stripper unit has an internal cavity with walls designed to strip sludge, mud and other grime from the pipe string periphery as the pipe is raised from the well bore, confining the muck to the well pit rather than having it fall to the work platform. A mounting plate is removably attached to the stripper unit by separable fasteners so that the plate may be recovered from a worn out molded stripper unit for further use without burning or abrading the stripper unit from the mounting plate.
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