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 |
