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The Welded Blade Stabilizers used in the B.H.A for drilling soft to medium hard formation holes are available in three types as shown.
Stabilizer bodies are manufactured from AISI 4145 H Modified Steel with mechanical properties in accordance with API Specification 7.
Mid steel blades are welded onto the body using strictly controlled pre-heating, post weld heat treatment and weld application techniques.
All areas affected by the process of welding are subject to full non-destructive examination to assure the mechanical integrity of the joint.
Standard Welded Blade Stabilizers are available in 3 or 4 blade configuration with the spiral type available with open or tight spiral.
OTI HF 1000 or HF 2000 Hardfacings are most commonly applied to Welded Blade Stabilizers.
Information on OTI Hardfacings can be found on the appropriate data sheet.
Thread connections are manufactured to API Specification 7 and can be produced with Stress Relief Groove and Bore Back according to customer’s specification.
Thread roots are cold rolled and can be kemplated to minimize galling upon request.
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STANDARD DIMENSIONS
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A
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6
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8½
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12¼
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17½
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26
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36
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B
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4¾
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6½
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8
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9½
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9½
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9½-11
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C
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28
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28
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28
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28
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28
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28
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D
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12
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14
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16
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18
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20
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20
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E
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60
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66
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71
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74
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84
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94
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F
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1½
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2
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2
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2½
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3
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3
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G
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2¼
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3
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3
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3
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H
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3½ IF
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4½ IF
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6⅝
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7⅝
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7⅝
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7⅝-8⅝
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Note:
- All dimensions are given in inches, unless otherwise stated.
- Other stabilizer sizes available on request.
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