Stabilizer
Stabilizer
Integral spiral stabilizer
Integral straight rib stablizer
Stabilizer is made from AISI4145H alloy steel acc.to API Spec.7, heat treated by special procedure and obtain expected hardness, strength and impact value properties. All threads are made strictly in accordance with API specification, phophated,copperized or cold worked.
|
D1 |
L2 ±5 |
D2 |
d |
L1±10 |
L±20 |
Thread code on two ends mm ( inch) |
|
190.5 190.0 189.0 |
400
500 |
159 |
57 |
750 |
1900
2000 |
190.5 (7 1/ 2) |
|
200.0 199.0 198 |
200 (7 7/8) |
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|
212.7 212.0 211.0 |
400
500
600 |
159
178 |
57
71 |
1900 |
212.7 (8 3/8) |
|
|
215.9 215.0 214.0 |
2000 |
215.9 (8 1/2) |
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|
222.2 221 220 |
2100 |
222.2 (8 3/4) |
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|
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) |
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|
250.8 250 249 |
2100 |
250.8 (9 7/8) |
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|
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) |
Dimension and type of connection thread:
|
OD of both ends mm (inch) |
Both end thread size and type |
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|
Drill string stabilizer |
Near-bit stabilizer |
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|
Top thread |
Bottem thead |
Top thread |
Bottem thead |
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|
121 (4 3 /4) |
NC35 inner |
NC35 outer |
NC35 inner |
3 1/2REG inner |
|
|
159 (6 1/4) |
NC44 inner |
NC44 outer |
NC44 inner |
4 1/2REG inner |
|
|
NC46 inner |
NC46 outer |
NC46 inner |
|||
|
178 (7) |
NC50 inner |
NC50 outer |
NC50 inner |
4 1/2REG inner |
|
|
203 (8) |
NC56 inner |
NC56 outer |
NC56 inner |
6 5/8REG inner |
|
|
229 (9) |
NC61 inner |
NC61 outer |
NC61 inner |
7 5/8REG inner or outer |
|
Integral spiral blade stabilizer
Integral Spiral Stabilizers are made from AISI 4145H Modified alloy steel or Non-magnetic alloy steel, the pressed button type or applied Tungsten Carbide hardbanding on the blade facing are available. the Non-magnetic stabilizers have special hardbanding on the spiralled blade surface that the magnetic properties has been eliminated.
Integral straight blade stabilizer
Straight rib stabilizers are made of AISI 4145H alloy steel by one piece of integral bar. every stabilizer has four straight ribs that pressed Tungsten Carbide buttons or other type of hardfacing are located on the surface of the ribs. Ultrasonic inspection is performed on each stabilizer.
