Washover Shoes FK type
Washover Shoes FK type
Washover shoes FK type are used for milling stuck or jammed tubing and drill pipes and other emergency objects in wells.

Washover shoes are available in three types:

light type (1FK);

medium type (2FK);

severe type (3FK).

Light milling cutters have a toothed cutting end, designed to work on mud cake, sediment, cement and rocks with inclusions of individual small metal objects.

Medium cutters have a wavy cutting surface, designed for the same work as light ones, but with inclusions of up to 15% of metal objects from steel.

Severe type cutters  have a massive cutting surface, designed for the same work as light ones, but with the inclusion of up to 40% of metal objects from steel.

Technical characteristics
Code Milling cutter connection with receiving tube, connecting thread Outer diameter, mm. Inside diameter, mm. Nominal diameter of the casing string according to GOST 632-80
FK-90/61 threaded, 73 GOST 633-80 90 61 114
FK-90/64 threaded, 73 GOST 633-80 90 64 114
FK-95/74 welded, - 95 74 114
FK-104/75 threaded, 89 GOST 633-80 104 75 127
FK-105/80 threaded, 89 GOST 633-80 105 80 127
FK-109/78 threaded, 89 GOST 633-80 109 78 140
FK-112/75 welded, - 112 75 140
FK-112/82 welded, - 112 82 140
FK-115/78 threaded, 89 GOST 633-80 115 78 140
FK-115/98 welded, - 115 98 140
FK-118/89 threaded, 102 GOST 633-80 118 89 140
FK-120/89 threaded, 102 GOST 633-80 120 89 140
FK-120/92 welded, - 120 92 140
FK-120/97 welded, - 120 97 140
FK-120/102 welded, - 120 102 146
FK-120/105 welded, - 120 105 146
FK-122/94 welded, - 122 94 146
FK-122/96 welded, - 122 96 146
FK-122/105 welded, - 122 105 146
FK-124/94 welded, - 124 94 146
FK-124/96 welded, - 124 96 146
FK-125/100 threaded, 114 GOST 632-80 125 100 146
FK-125/104 threaded, 114 GOST 632-80 125 104 146
FK-127/109 welded, - 127 109 146
FK-130/102 threaded, 114 GOST 632-80 130 102 146
FK-130/120 welded, - 130 120 146
FK-135/105 welded, - 135 105 168
FK-136/102 welded, - 136 102 168
FK-140/105 threaded, 127 GOST 632-80 140 105 168
FK-140/110 threaded, 127 GOST 632-80 140 110 168
FK-140/120 welded, - 140 120 168
FK-144/118 welded, - 144 118 168
FK-147/121 welded, - 147 121 178
FK-149/121 welded, - 149 121 178
FK-160/133 welded, - 160 133 194
FK-186/138 threaded, 168 GOST 632-80 186 138 219
FK-190/103 threaded, 168 GOST 632-80 190 103 219
FK-190/132 threaded, 168 GOST 632-80 190 132 219
FK-190/152 welded, - 190 152 219
FK-210/171 welded, - 210 171 245
FK-210/179 welded, - 210 179 245
FK-248/205 threaded, 219 GOST 632-80 248 205 273
FK-285/249 welded, - 285 249 324
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