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Drilling tool stabilizer
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Drilling tool stabilizer
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Drilling tool stabilizer
Drilling tool stabilizer is made of AISI4145H alloy steel in accordance with API Specifications. Threads can be processed with cold rolling, coppering or phosphating.
● Dimensions and type of connecting threads on both ends
|
Outer diameter on both ends of stabilizer mm(in) |
Dimensions and type of connecting threads on both ends |
|||
|
DrillStringStabilizer |
Near-bitStabilize |
|||
|
top |
bottom |
top |
bottom |
|
|
121(4 3/4) |
NC35 internal thread |
Nc35 External thread |
Nc35 internal thread |
3 1/2REG internal thread |
|
159(6 1/4) |
Nc44 internal thread |
NC44 External thread |
NC44 internal thread |
4 1/2REG internal thread |
|
NC46 internal thread |
NC46 External thread |
NC46 internal thread |
||
|
178(7) |
NC50 internal thread |
Nc50 External thread |
Nc50 internal thread |
4 1/2REG internal thread |
|
203(8) |
NC56 internal thread |
NC56 External thread |
NC56 internal thread |
6 5/8REG internal thread |
|
229(9) |
NC61 internal thread |
NC61 External thread |
NC61 internal thread |
7 5/8REG Internal or external threads |
Replaceable bushing stabilizer

Basic dimensions of replaceable bushing stabilizer
|
Working outer diameter of stabilizer D₁ |
L2±5 |
D2 |
d |
L1±10 |
L±20 |
Applicable drill bit diameter mm |
|
190.5 190 189 |
400 500 |
159 |
57 |
750 |
1900 2000 |
190.5(7 1/2) |
|
200.0 199 198 |
200.0(7 7/8) |
|||||
|
212.7 212 211 |
400 500 600 |
159
178 |
57
71 |
1900 |
212.7(8 3/8) |
|
|
215.9 215 214 |
2000 |
215.9(8 1/2) |
||||
|
222.2 221 220 |
2100 |
222.2(8 3/4) |
||||
|
241.3 240 239 |
400 500 600 |
178 |
71 |
1900 |
241.3(9 1/2) |
|
|
244.5 244 243 |
2000 |
244.5(9 5/8) |
||||
|
250.8 250 249 |
2100 |
250.8(9 7/8) |
||||
|
311.1 310 309 |
500 600 700 |
203 229 |
76 |
2100 2200 2300 |
311.1(12 1/4) |
|
|
444.5 443 441 |
500 600 700 |
2300 2400 2500 |
444.5(17 1/2) |
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