The Roller reamer is designed for any reaming operation and particularly for stabilization purposes when drilling in abrasive formations. According to the different hardnesses of formations, you may separately select sharp-fanged roller,wide-fanged roller or tungsten carbide compacts roller. In addition, each body, by simple adjustment of blocks and proper selection of cutters, will suit a wide range of hole sizes. it is a very popular tool, this tool can equip with three structure rollers and be suitable for hard formation in reaming operation.

construction

Its body is made of alloy steel, fully heat treated to 285-341 Brinell hardness and 54J minimum impact strength.

Pressure balanced sealed journal bearing assembly has a long service life.

Three different types (T, F and B) of rollers are offered.

Type T: Milled, machined with hard-faced sharp teeth for soft formations

Type F: Milled, machined with hard-faced flat teeth, for medium hard formations

Type B: Equipped with pressed-in tungsten carbide buttons, for hard formations

Type	Max O.D. (in)	I.D. (mm)	O.D. of Fishing neck (mm)	Roller O.D. (mm)	Roller Length (mm)	Length(mm)		Connection
						String type	Near bit type	String type	Near bit type
WG149	5 7/8″	47	121	41	200	1500	1400	NC38	NC38× 3 1/2REG
WG152	6″	47	121	41	200	1500	1400	NC38	NC38× 3 1/2REG
WG155	6 1/8″	47	121	41	200	1500	1400	NC38	NC38× 3 1/2REG
WG212	8 3/8″	47	159	60.3	200	1600	1400	NC38	NC46× 4 1/2REG
WG215	8 1/2″	47	159	60.3	200	1600	1400	NC38	NC46× 4 1/2REG
WG311	12 1/4″	71	203	100	300	1900	1700	6 5/8 REG	6 5/8 REG
WG406	16″	76	229	140	350	2200	2000	7 5/8 REG	7 5/8 REG
WG432	17″	76	229	140	350	2200	2000	7 5/8 REG	7 5/8 REG
WG444	17 1/2″	76	229	140	350	2200	2000	7 5/8 REG	7 5/8 REG
WG559	22″	76	241	152	380	2350	2200	7 5/8 REG	7 5/8 REG
WG666	26″	76	241	178	400	2350	2200	7 5/8 REG	7 5/8 REG
WG711	28″	76	241	178	400	2350	2200	7 5/8 REG	7 5/8REG
WG914	36″	76	241	178	400	2350	2200	7 5/8 REG	7 5/8 REG