| 摘要 |
Apparatus for protecting tool joints and injection or control tubing of production tubing strings employed in the production of oil and gas. A pair of half-cylinder shaped sections are provided which are interconnected at respective edges by an elongate piano-type hinge having a releasable pin. The opposite edges are provided with a plurality of pin guide sections matingly received by each other to define a pair of longitudinal pin slots when the protector is disposed about a tool joint. A pair of mating tapered pins are provided for each slot whereby when the pins are driven into their respective slots, the edges of the half-sections carrying the pin guides are drawn toward each other to effect progressively tighter engagement of the protector about the tool joint and tubing in an interference fit. Half-sections of varying radii of curvature and pins of varying taper are provided, whereby a variety of tool joints having differing outer dimensions may be accommodated, resulting in an effective interference fit by substituting half-sections and pins of appropriate size. A window intermediate the pair of pin slots facilitates lower pin installation while providing for slight flexing of the protector about the tool joint to further accommodate dimensional variations thereof.
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