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Bottom hole mills
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Purpose: breaking down metal objects and cement stones along borehole section while reconditioning maintenance. According to specific conditions to arise in boreholes bottom hole milling cutters are subdivided into types:
FZ1 - typped one [are purposed to destruct any settlement, cement, metal pieces of pipes and thin-walled casing tubing strings);
FZ2, FZV2, FZK2 - matrix one (reinforced with hard alloy grits) are purposed to destruct big and solid objects and structures);
FZE - equipped with hard alloy plates - are purposed to mill light alloy drilling tubes). At a client's request we are ready to supply an instrument with another sizes, different from the data, given in the table.
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Type |
Size |
Outside diameter
of a body, mm |
Coupling thread* |
GOST 28487-90 |
API 7 |
FZ1 FZ2 FZE |
85…95 |
85…95 |
Ç-66 |
23/8 Reg |
FZ1 FZ2 FZE |
102…127 |
102…127 |
Ç-76 |
27/8 Reg |
FZ1 FZ2 FZE |
130…145 |
130…145 |
Ç-88 |
31/2 Reg |
FZ1 FZ2 FZE |
180…220 |
180…220 |
Ç-117 |
41/2 Reg |
FZ1 FZ2 FZE |
268…270 |
268…270 |
Ç-147 |
51/2 FH |
FZV2 |
210…220 |
210…220 |
Ç-117 |
41/2 Reg |
FZV2 |
268…270 |
268…270 |
Ç-147 |
51/2 FH |
FZK2 |
121/100 |
121 |
3-76 |
27/8 Reg |
FZK2 |
124/100 |
124 |
3-76 |
27/8 Reg |
FZK2 |
140/120 |
140 |
3-88 |
31/2 Reg |
FZ2-85Cp |
85 |
85 |
3-66 |
23/8 Reg |
FZ2-122Cp |
122 |
122 |
3-76 |
27/8 Reg |
FZ2-152Cp |
152 |
152 |
Ç-88 |
31/2 Reg |
* It is possible to produce a coupling thread at a clients request.
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