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Drilling Stabilizer

General Description
A stabilizer is a piece of down-hole equipment that is use in the BHA (Bottom Hole Assembly) of a Drill String. It mechanically stabilizes the BHA in the borehole to avoid unintentional sidetracking and drill string vibrations and ensure the quality of the drilled hole. The stabilizer comprises a hollow cylindrical body and stabilizing blades made of high-strength alloy steel. The Stabilizer blades can be straight or spiraled and are hard-faced for wear resistance. Near-bit stabilizers have box-to-box connections. String stabilizers have pin-to-box connections.
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Product Details

A stabilizer is a piece of down-hole equipment that is use in the BHA (Bottom Hole Assembly) of a Drill String. It mechanically stabilizes the BHA in the borehole to avoid unintentional sidetracking and drill string vibrations and ensure the quality of the drilled hole. The stabilizer comprises a hollow cylindrical body and stabilizing blades made of high-strength alloy steel. The Stabilizer blades can be straight or spiraled and are hard-faced for wear resistance. Near-bit stabilizers have box-to-box connections. String stabilizers have pin-to-box connections.

 

We offer the rough-machined stabilizer forgings, as well as the finished stabilizers according to API SPEC 7-1. All drilling stabilizers are integral style, also can be highly customized as per customer’s requirements.

 

Specification

  • Standard: API Spec 7-1
  • Sizes: 3.3/4"-36"
  • Material: AISI 4145H/AISI 4145H mod/AISI 4340/AISI4140-4142/non-mag material
  • Processing steps: Ingot — forging — heat treatment — rough machining — UT.MT — Q+T — inspection — finishing machining
  • Heat treatment: Normalized / Annealed / Quenched / Tempered


Stabilizer Types

We offer several stabilizer options, in both alloy steel and non-magnet materials:

  • Spiral Integral Blade Stabilizer
  • Straight Integral Blade Stabilizer
  • Non-Magnet Integral Blade Stabilizer



Size Chart

Name

Drill bit

OD

Body OD

Bore

Dia

Fishing neck length

Crown length

Overall length

Connection

in

in

in

in

in

in

Top

Down

Float valve

Integral Blade String Stabilizer

3.3/4

3.1/8

1.1/4

26

10

58

NC23 B

NC23 P

None

Integral Blade Near Bit Stabilizer

3.3/4

3.1/8

1.1/4

26

10

58

NC23 B

2.3/8"REG B

2F-3R

Integral Blade String Stabilizer

4.1/2

3.1/2

1.1/2

26

10

59

NC26 B

2.3/8"IF B

NC26 P

2.3/8"IF P

None

Integral Blade Near Bit Stabilizer

4.1/2

3.1/2

1.1/2

26

10

59

NC26 B

2.3/8"IF B

2.3/8"REG B

2F-3R

Integral Blade String Stabilizer

5.1/2

4.3/4

2

30

12

68

NC38 B

3.1/2"IF B

NC38 P

3.1/2"IF P

None

Integral Blade Near Bit Stabilizer

5.1/2

4.3/4

2

30

12

68

NC38 B

3.1/2"IF B

3.1/2"REG B

2F-3R

Integral Blade String Stabilizer

6

4.3/4

2

30

12

69

NC38 B

3.1/2"IF B

NC38 P

3.1/2IF P

None

Integral Blade Near Bit Stabilizer

6

4.3/4

2

30

12

69

NC38 B

3.1/2"IF B

3.1/2"REG B

2F-3R

Integral Blade String Stabilizer

7.1/2

6.1/2

2.13/16

30

16

72

NC46 B

4"IF B

NC46 P

4"IF P

None

Integral Blade Near Bit Stabilizer

7.1/2

6.1/2

2.13/16

30

16

72

NC46 B

4"IF B

4.1/2"REG B

4R

Integral Blade String Stabilizer

7.7/8

6.1/2

2.13/16

30

16

72

NC46 B

4"IF B

NC46 P

4"IF P

None

Integral Blade Near Bit Stabilizer

7.7/8

6.1/2

2.13/16

30

16

72

NC46 B

4"IF B

4.1/2"REG B

4R

Integral Blade String Stabilizer

8

6.3/4

2.13/16

30

16

73

NC50 B

4.1/2"IF B

NC50 P

4.1/2"IF P

None

Integral Blade Near Bit Stabilizer

8

6.3/4

2.13/16

30

16

73

NC50 B

4.1/2"IF B

4.1/2"REG B

4R

Integral Blade String Stabilizer

8.1/2

6.3/4

2.13/16

30

16

73

NC50 B

4.1/2"IF B

NC50 P

4.1/2"IF P

None

Integral Blade Near Bit Stabilizer

8.1/2

6.3/4

2.13/16

30

16

73

NC50 B

4.1/2"IF B

4.1/2"REG B

4R

Integral Blade String Stabilizer

9.1/2

6.3/4

2.13/16

30

16

75

NC50 B

4.1/2"IF B

NC50 P

4.1/2"IF P

None

Integral Blade Near Bit Stabilizer

9.1/2

6.3/4

2.13/16

30

16

75

NC50 B

4.1/2"IF B

4.1/2"REG B

4R

Integral Blade String Stabilizer

12

8

2.13/16

30

18

79

6.5/8"REG B

6.5/8"REG P

None

Integral Blade Near Bit Stabilizer

12

8

2.13/16

30

18

79

6.5/8"REG B

6.5/8"REG B

5F-6R

Integral Blade String Stabilizer

12.1/4

8

2.13/16

30

18

79

6.5/8"REG B

6.5/8"REG P

None

Integral Blade Near Bit Stabilizer

12.1/4

8

2.13/16

30

18

79

6.5/8"REG B

6.5/8"REG B

5F-6R

Integral Blade String Stabilizer

14.3/4

8

2.13/16

30

18

84

6.5/8"REG B

6.5/8"REG P

None

Integral Blade Near Bit Stabilizer

14.3/4

8

2.13/16

30

18

84

6.5/8"REG B

6.5/8"REG B

5F-6R

Integral Blade String Stabilizer

15.1/2

8

2.13/16

30

18

85

6.5/8"REG B

6.5/8"REG P

None

Integral Blade Near Bit Stabilizer

15.1/2

8

2.13/16

30

18

85

6.5/8"REG B

6.5/8"REG B

5F-6R

Integral Blade String Stabilizer

16

9.1/2

3

30

20

85

7.5/8"REG B

7.5/8"REG P

None

Integral Blade Near Bit Stabilizer

16

9.1/2

3

30

20

85

7.5/8"REG B

7.5/8"REG B

5F-6R

Integral Blade String Stabilizer

17

9.1/2

3

30

20

88

7.5/8"REG B

7.5/8"REG P

None

Integral Blade Near Bit Stabilizer

17

9.1/2

3

30

20

88

7.5/8"REG B

7.5/8"REG B

5F-6R

Integral Blade String Stabilizer

17.1/2

9.1/2

3

30

20

88

7.5/8"REG B

7.5/8"REG P

None

Integral Blade Near Bit Stabilizer

17.1/2

9.1/2

3

30

20

88

7.5/8"REG B

7.5/8"REG B

5F-6R

Integral Blade String Stabilizer

20

9.1/2

3

30

20

92

7.5/8"REG B

7.5/8"REG P

None

Integral Blade Near Bit Stabilizer

20

9.1/2

3

30

20

92

7.5/8"REG B

7.5/8"REG B

5F-6R

Integral Blade String Stabilizer

22

9.1/2

3

30

20

92

7.5/8"REG B

7.5/8"REG P

None

Integral Blade Near Bit Stabilizer

22

9.1/2

3

30

20

92

7.5/8"REG B

7.5/8"REG B

5F-6R

Integral Blade String Stabilizer

24

9.1/2

3

32

20

97

7.5/8"REG B

7.5/8"REG P

None

Integral Blade Near Bit Stabilizer

24

9.1/2

3

32

20

97

7.5/8"REG B

7.5/8"REG B

5F-6R

Integral Blade String Stabilizer

26

9.1/2

3

32

20

100

7.5/8"REG B

7.5/8"REG P

None

Integral Blade Near Bit Stabilizer

26

9.1/2

3

32

20

100

7.5/8"REG B

7.5/8"REG B

5F-6R

Integral Blade String Stabilizer

28

9.1/2

3

32

20

102

7.5/8"REG B

7.5/8"REG P

None

Integral Blade Near Bit Stabilizer

28

9.1/2

3

32

20

102

7.5/8"REG B

7.5/8"REG B

5F-6R

Integral Blade String Stabilizer

30

9.1/2

3

34

20

107

7.5/8"REG B

7.5/8"REG P

None

Integral Blade Near Bit Stabilizer

30

9.1/2

3

34

20

107

7.5/8"REG B

7.5/8"REG B

5F-6R

Integral Blade String Stabilizer

36

9.1/2

3

36

20

120

7.5/8"REG B

7.5/8"REG P

None

Integral Blade Near Bit Stabilizer

36

9.1/2

3

36

20

120

7.5/8"REG B

7.5/8"REG B

5F-6R

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