Latch-type tubing protector

Details Latch-type tubing protector Latch-type tubing protector

1984-10-15

1986-10-07

Husar, Cornelius J.

Pipe joints or couplings

Convertible

285 45, 285419, 175325, F16L 5500

Patent

active

046155430

ABSTRACT:
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.

REFERENCES:
patent: 544943 (1895-08-01), Woodside
patent: 3740801 (1973-06-01), Sears, Jr. et al.
patent: 4266578 (1981-05-01), Swain et al.
patent: 4422504 (1983-12-01), Moore
patent: 4484785 (1984-11-01), Jackson
patent: 4543998 (1985-10-01), Thomerson

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