Stabilizer
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Stabilizer is one useful tool for drilling operation. Our company offers a wide variety of near bit stabilizers and string stabilizers according to API SPEC 7. All drilling stabilizers are integral style, also can be highly customized as per customer's requirements.
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Stabilizer
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Integral Straight Blade Stabilizer
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Straight blade stabilizer is integrally made of high strength alloy steel AISI 4145H, usually with 3 blades or 4 blades. The working surface of straight stabilizer is provided with carbide insert, diamond compound insert, or overlay welding etc.
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Integral Spiral Blade Stabilizer
Spiral blade stabilizer is integrally made of high strength alloy steel AISI 4145H, usually with 3 blades or 4 blades. The working surface of spiral stabilizer is provided with carbide insert, diamond compound insert, or overlay welding etc.
Replaceable Sleeve Stabilizer
Replaceable sleeve stabilizer is special tool suitable for directional well drilling. The stabilizer sleeve can be changed quickly and easily after sleeve hard banding is worn-out. There're two styles available: 2-piece stabilizer, and 3-piece stabilizer.
Non-Rotating Stabilizer
Non-rotating stabilizer is special tool in drilling to avoid blade worn out or wall damage. Kingwell provides non-rotating stabilizer for drilling hole from 13-3/8"~28".
Float Valve Stabilizer
Float valve stabilizer is effective tool in drilling operation. The stabilizer is connected at upper part of drill bit, and the float valve assembly in stabilizer is near the bit thread. Such structure of stabilizer can realize the automatically shutting off inside bore of tool to avoid the accident.
Spherical Stabilizer
Spherical stabilizer is new tool for various drilling operation. Kingwell provides spherical stabilizer from 6"~ 12-1/4".
VariablDiameter Stabilizer
Variable diameter stabilizer is new tool for drilling operation. With special support head, variable diameter stabilizer can change the outside diameter by stretching out or drawing back support head so as to adjust the clearance between hole wall and stabilizer and avoid sticking.
Unbalanced Spiral Blade Stabilizer
Unbalanced Spiral Blade Stabilizer is ideal anti-inclination tool for drilling operation. Relying on stabilizer's structural unbalanced principle, during rotating of drilling string, stabilizer will make one centrifugal force to heavy side, working with the eccentric force etc of drilling string, such large impart restoring force will straighten well-bore gradually. There're two styles available: unbalanced spiral blade.
Options for Stabilizer Hard Facing
HF 1000, ideal for soft formation drilling.
HF 2000, ideal for high deviation drilling in abrasive formations.
HF 3000, recommended for non-magnetic stabilizers.
TCI, button type
Technical Specifications of Straight Blade Stabilizer
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Bit O.D.(in)
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O.D.
(mm)
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End O.D.
(mm)
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I.D.
(mm)
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Length(mm)
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Connection
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Short Type
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Long Type
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Drill String
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Near Bit
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Near Bit
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Drill String
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Near Bit
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Drill String
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Top
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Down
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Top
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Down
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6
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152.4
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121
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51
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800
~900
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1,000
~1,100
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1,200
~1,400
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1,400
~1,600
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NC
38
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NC
38
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NC38
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3-1/2 REG
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6-1/4
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158.7
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6-1/2
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165.1
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7-1/2
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190.5
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159
165
178
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57
71
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1,000
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1,600
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1,800
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NC
46
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NC
46
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NC46
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4-1/2 REG
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7-7/8
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200.0
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8-3/8
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212.7
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1,000
~1,200
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1,600
~1,800
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1,800~
2,000
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NC46
NC50
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4-1/2 REG
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8-1/2
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215.9
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8-3/4
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222.2
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9-1/2
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241.3
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178
197
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71
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800
~1,000
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1,000
~1,200
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1,600
~1,800
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NC
50
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NC50
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NC50
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6-5/8 REG
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??
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9-5/8
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244.5
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??
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9-7/8
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250.8
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??
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12-1/4
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311.2
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203
229
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76
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1,000
~1,200
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1,200
1,500
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1,800
2,000
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NC56
6-5/8 REG
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6-5/8 REG
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17-1/2
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444.5
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1,200
~1,300
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1,200
~1,300
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2,000
~2,200
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2,000~
2,200
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NC61
7-5/8 REG
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Technical specifications of spiral blade stabilizer
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Bit Size
(in)
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Working O.D.
(mm)
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End O.D. of Body
(mm)
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I.D.
(mm)
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Length
(mm)
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Thread Code on Both Ends
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String Type
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Near Bit Type
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Top
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Down
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Top
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Down
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6
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152.4
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121
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51
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1,200
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NC38
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3-1/2 REG
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6-1/4
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158.7
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6-1/2
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165.1
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7-1/2
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190.5
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159
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57
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1,600
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NC46
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4-1/2 REG
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7-7/8
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200
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8-3/8
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212.7
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159
165
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71
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1,600
1,800
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NC46
NC50
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8-1/2
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215.2
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159
165
178
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8-3/4
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222.2
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9-1/2
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241.3
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178
197
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1,600
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NC50
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NC50
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NC50
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6-5/8 REG
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9-5/8
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244.5
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1,800
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9-7/8
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250.8
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12-1/4
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311.2
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203
229
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76
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1,800
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NC56
6-5/8 REG
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NC56
6-5/8 REG
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NC56
6-5/8 REG
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6-5/8 REG
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16
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406
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229
241.3
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2,000
2,200
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NC61
7-5/8 REG
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NC61
7-5/8 REG
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NC61
7-5/8 REG
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NC61
7-5/8 REG
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Technical Specifications of Replaceable Sleeve Stabilizer
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Bit
Dia.
(in)
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Drill
Collar
Dia.
(in)
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Sleeve
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Stabilizer Body
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Thread Code on Both Ends
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Length
(mm)
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Work O.D. (mm)
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Upset End Dia. (mm)
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Upset End Length (mm)
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Fishing Neck Length (mm)
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I.D. (mm)
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Make-up
Torque
(KN.m)
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Over length (mm)
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Drill String
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Near Bit
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Near Bit Type
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Drill String Type
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Top
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Down
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Top
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Down
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8-
1/2
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6-1/2
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480
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214
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190
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200
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600
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71
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6.95
~7.25
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1,800
~1,900
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1,800
~1,900
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4-1/2 IF
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4-1/2 IF
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4-1/2 IF
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4-1/2 REG
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8-1/4
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470
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210
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8-
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472
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203
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7-3/4
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455
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197
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12-1/4
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8
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555
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310
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238
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76
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19.7
~11
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1,800
~2,000
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1,800
~2,000
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6-5/8
REG
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6-5/8 REG
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6-5/8 REG
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6-5/8 REG
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12-
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550
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305
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11-1/2
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540
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292
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11
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530
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279
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17-1/2
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9
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682
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444
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279
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13.85
~16.55
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7-5/8
REG
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7-5/8 REG
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7-5/8
REG
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7-5/8 REG
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17
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676
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432
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16-1/2
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670
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420
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16
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644
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407
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22
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2,000~
2,200
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2,000~
2,200
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24
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26
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Technical Specifications of Non-Rotating Stabilizer
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Hole Size (in)
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Stabilizer Sleeve
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Stabilizer Body
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Overall Length (mm)
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Length (mm)
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O.D.
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Blade Qty.
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I.D. (mm)
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Fishing
O.D.(mm)
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Thread Type
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13-3/8
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500
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313
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4
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71
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165
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4-1/2 IF
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2,000
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10-3/4
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500
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255
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4
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71
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165
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4-1/2 IF
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2,000
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9-5/8
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500
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220
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4
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71
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165
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4-1/2 IF
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2,000
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7
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380
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157
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4
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44
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127
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4-1/2 IF
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1,600
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12-1/4
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523
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310
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4
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76
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215
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6-1/8 REG
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2,010
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16
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543
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405
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4
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76
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241
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7-5/8 REG
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2,210
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17
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543
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430
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4
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76
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241
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7-5/8 REG
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2,210
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22
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635
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558
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4
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76
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241
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7-5/8 REG
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2,210
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28
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715
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711
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5
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76
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241
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7-5/8 REG
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2,210
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Technical Specifications of Float Valve Stabilizer
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Stabilizer Body O.D. (mm)
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Stabilizer
Thread
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Float Valve Assembly O.D. (mm)
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Float Valve Assembly length (mm)
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228 241
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7-5/8 REG
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121
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298.4
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228 241
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7-5/8 REG
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121
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298.4
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228 241
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7-5/8 REG
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121
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298.4
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203 209.6
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6-5/8 REG
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121
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298.4
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178
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4-1/2 IF
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98
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247.6
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178 165
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4-1/2 REG
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88
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211.14
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127 121
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3-1/2 REG
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61
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165.1
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Technical Specifications of Spherical Stabilizer
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working
O.D. (in)
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Body O.D. on Both Ends (mm)
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I.D. (mm)
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Stabilizer
Length
(mm)
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Thread on Both Stabilizer Ends
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String Type
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Near Bit Type
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Top
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Down
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Top
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Down
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6~6-1/2
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121
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51
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785
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3-1/2IF
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3-1/2IF
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3-1/2IF
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3-1/2REG
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7~7-7/8
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159
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57
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850
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4-1/2IF
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4-1/2IF
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4-1/2IF
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4-1/2REG
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8~8-1/2
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165
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71
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850
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4-1/2IF
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4-1/2IF
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4-1/2IF
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4-1/2REG
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9~9-1/4
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197
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71
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870
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4-1/2IF
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4-1/2IF
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4-1/2IF
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4-1/2REG
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12~12-1/4
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203
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76
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940
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6-5/8REG
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6-5/8REG
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6-5/8REG
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6-5/8REG
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Technical Specifications of Variable Diameter Stabilizer
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Body
O.D.
(mm)
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I.D.
(mm)
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Head O.D. (mm)
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Head
Nos.
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Overall
Length
(mm)
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Box
Thread
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Pin
Thread
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O.D .
Varied (mm)
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Min. Pressure ,
Stretch Out(MPa)
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Max. Working
Pressure (MPa)
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Max.
Differential
Pressure (MPa)
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201
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55
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80
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15
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1,350
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NC50
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NC50
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211~213
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0.1
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20
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40
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204
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55
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80
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15
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1,350
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NC50
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NC46
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214~215
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0.1
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20
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40
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Technical Specifications of Unbalanced Single-Spiral-Blade Stabilizer
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O.D. (mm)
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I.D. (mm)
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Thread conn.
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Length(mm)
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215
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71
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4-1/2 IF
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1,800
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311
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76
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6-5/8 , REG
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1,800
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444
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76
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7-5/8 REG
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2,000
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Technical Specifications of Unbalanced Multi-Spiral-Blade Stabilizer
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O.D. (mm)
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I.D. (mm)
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Thread conn.
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Length(mm)
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215
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71
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4-1/2 IF
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4,600
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311
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76
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6-5/8 REG
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4,600
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