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US 7,478,548 B2Granted
Reaming apparatus
AssigneeWeatherford U.K. Limited
InventorJames Edward Fogg
Life of this patent
Estimating the term…
Abstract
Tubing reaming apparatus comprises a housing adapted to be mounted to tubing to be reamed. The housing provides mounting for a reamer shaft adapted to mount a cutter within the tubing. The housing also provides mounting for a drive arrangement. A gear arrangement is provided between the drive arrangement and the reamer shaft. The housing may comprise a clamping arrangement adapted to reduce residual bend and ovality of the tubing.
Claims41
Apparatus for reaming tubing, the apparatus comprising:
- a housing adapted to be mounted to tubing to be reamed, the housing providing mounting for (a) a reamer shaft, the shaft adapted to mount a cutter within tubing to be reamed, and (b) a drive arrangement;
- a gear arrangement between the drive arrangement and the reamer shaft, the gear arrangement being adapted to modify the nature of an input to the drive arrangement on transfer to the reamer shaft;
- and
- a cutter advance arrangement adapted to advance the reamer shaft axially relative to the housing.
1 more element
A method of reaming tubing, the method comprising:
- mounting a housing to tubing to be reamed, a cutter being mounted on a reamer shaft mounted to the housing;
- engaging the tubing with the cutter;
- applying an input force to drive the reamer shaft and rotate the cutter via gearing which modifies the nature of the input force on transfer to the reamer;
- and
- advancing the cutter with rotation of the reamer shaft.
2 more elements
Dependencies are inferred from the claim text.