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Roller Reamer
Roller reamer is designed for various reaming operation. It can be used in hard formation or abrasive formation in order to keep the standard hole size. Drilling Tools
Describe

Roller reamer is designed for various reaming operation. It can be used in hard formation or abrasive formation in order to keep the standard hole size. When the bit size is under the standard size, it can ream the well bottom size to standard hole size. Whether drilling the vertical well or directional well, it can make the bit or casing come into the normal hole size. The features of roller reamer are small frictional resistance with well wall, strong abrasive resistance and long life.

Hardfacing of roller:

Type T: Soft formation

Type F: Medium-hard formation

Type B: Hard formationWG滾輪穩(wěn)定器-滾輪刀.jpg


Specifications




Model

Hole Size
   mm
  (inch)

Roller
  Diameter
  mm
  (inch)

Roller
  Length
  mm
  (inch)

Fishing
  Neck OD mm
  (inch)

ID
  mm
  (inch)

OAL
  mm
  (inch)

Conn.

Upper

Lower

Remark

WG-149

149.2
  (5 7/8)

46
  (1 13/16)

200
  (7 7/8)

120.7
  (4 3/4)

31.8
  (1 1/4)

1600
  (63)

NC38

NC38

String

3 1/2

REG

Near Bit

WG-156

155.6
  (6 1/8)

50.8
  (2)

200
  (7 7/8)

120.7
  (4 3/4)

31.8
  (1 1/4)

1600
  (63)

NC38

NC38

String

3 1/2

REG

Near Bit

WG-216

215.9
  (8 1/2)

71
  (2 13/16)

200
  (7 7/8)

165.1
  (6 1/2)

44.5
  (1 3/4)

1800
  (70 7/8)

NC50

NC50

String

4 1/2

REG

Near Bit

WG-311

311.1
  (12 1/4)

100
  (3 15/16)

300
  (11 13/16)

203.2
   (8)

57.2
  (2 1/4)

1900
  (74 13/16)

6 5/8

REG

6 5/8

REG

String

Near Bit

WG-444

444.5
  (17 1/2)

140
  (5 1/2)

304
  (11 21/31)

228.6
  (9)

76.2
  (3)

2100(
  82 43/64)

7 5/8

REG

7 5/8

REG

String

Near Bit


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