Releasing Rod Overshots Type OSH


Application:

The STS Releasing Rod Overshots are external catch fishing tools designed to retrieve tubular items, rod boxes mainly, from the oil, gas and exploratory well bores.

Construction:

The rod overshot consists of bowl, top sub and a set of replacement elements including spiral and basket grapples, grapple controls and type «S» and «C» control guides. The top subs are supplied in two versions: with rod connection (Standard version) or with tubing connection box.

When the fish diameter approaches the maximum catch of the overshot, a spiral grapple is required. In other cases a basket grapple is used. The catching process carried out by the helix-shaped configuration inside the overshot bowl provides a tapered spiral surface onto which spiral or basket grapple will attach.

When ordering, please specify:

  • Assembly name and size;
  • Version (LH or RH);
  • Top connection, if other than stated in the table;
  • Nominal sizes and quantity of spiral and basket grapples taking into account that operating range both spiral and basket grapples are +0.2…-1.3 mm of nominal size;

Recommended spares for each size of rod overshots:

  • 3 (three) spiral grapples for each nominal size;
  • 3 (three) basket grapples for each nominal size;
  • 1 (one) basket grapple control for each 6 (six) basket grapples of all sizes;
  • 2 (two) spiral grapple controls type “C” for each 6 (six) spiral grapples.
Assembly name & size OD Max size of the spiral grapple Max size of the basket grapple Connecting thread Limit load
mm inch mm inch mm inch кН lbf
OSH-36 36,8 17/16 31,8 11/4 27,0 11/16 МШ-16 Rod 5/8 box 30,0 7000,0
OSH-40 40,2 119/32 30,2 13/16 27,0 11/16 МШ-19 Rod 3/4 box 102,0 23000,0
OSH-42 42,2 121/32 34,2 111/32 27,0 11/16 МШ-19 Rod 3/4 box 80,0 18000,0
OSH-45 45,8 113/16 36,5 17/16 28,5 11/8 МШ-22 Rod 7/8 box 100,0 22000,0
OSH-47 46,8 127/32 38,1 1 1/2 31,8 1 1/4 МШ-22 Rod 7/8 box 103,0 23000,0
OSH-48 48,6 129/32 40,4 119/32 33,4 1 5/16 МШ-22 Rod 7/8 box 107,0 24000,0
OSH-53 53,9 2 1/8 46,0 113/16 38,1 1 1/2 МШ-22 Rod 7/8 box 100,0 22000,0
OSH-54 54,6 2 5/32 44,4 1 3/4 38,1 1 1/2 МШ-22 Rod 7/8 box 103,0 23000,0
OSH-57 57,2 2 1/4 46,8 127/32 41,3 1 5/8 МШ-22 Rod 7/8 box 190,0 43000,0
OSH-58 58,7 2 5/16 49,2 115/16 42,9 111/16 МШ-22 Rod 7/8 box 180,0 40000,0
OSH-60 60,3 2 3/8 49,2 115/16 42,9 111/16 МШ-22 Rod 7/8 box 207,0 47000,0
OSH-71 71,4 213/16 57,2 2 1/4 49,2 115/16 З-44 NC 16 226,0 51000,0
OSH-72 72,2 227/32 60,3 2 3/8 54,0 2 1/8 З-44 NC 16 210,0 47000,0
OSH-73 73 2 7/8 60,3 2 3/8 53,2 2 3/32 З-44 NC 16 282,0 63000,0
OSH-82 82 3 7/32 69,0 223/32 60,3 2 3/8 З-66 23/8 Reg 280,0 63000,0

It is possible to produce any sizes not listed in the table



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