The Overshots, Type ON, are designed to grip and recover coil tubing (CT), 19.1; 33.4; 38.1 and 44.45 mm in outer diameter, left in the borehole, due to sticking or for some other reason, by extracting it.
The overshots are manufactured in the nominal diameters of 44, 54, 57 and 68 mm.
Basic Parameters and Dimensions:
| Parametr |
Designation |
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|
ON – 44 |
ON – 54 |
ON – 57 |
ON – 68 |
|
Rated tubing (T) string size, mm |
60 |
73; 89 | 73; 89 |
89; 102; 114 |
Outer diameter of pipes and tubes pulled out, mm |
19,1 |
25,4; 33,4 | 19,5; 22,0; 25,4; 38,1 |
38,1; 44,45 |
| Length, L, mm |
700 |
700 | 1100 (1255) |
780 (1165) |
| Diameter, D, mm |
44 |
54 | 57 |
68 |
| Weight, kg, max |
5,3 |
6 | 10 |
14 |
| Working fluid |
Drilling fluid, oil, water |
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| Fluid temperature, °C, max |
100 |
100 | 100 |
100 |
| Connecting thread dimensions as per GOST 24705-81, 8724-81, 9150-81 |
M 30 х 2 |
M42 х 2 | M 42 х 2 |
M 42 х 2 |