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.
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 |
Температура, °С | от −30 до +400 |
Плотность, кг/м³, не более | 1050 |
Концентрация механических примесей, %, не более | 0,2 |
Величина зерна твердой неабразивной фазы, мм, не более | 0,2 |
Содержание серы в несвободном состоянии, %, не более | 3,5 |
Содержание парафина, %, не более | 3,5 |