牡丹江中原钻采有限公司

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

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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 formation WG滚轮稳定器-滚轮刀.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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