Hole Cleaning Tips
Hole cleaning is one of the basic functions of any drilling fluid. Cuttings generated by the bit, plus any caving and/or sloughing, must be carried to the surface by the mud.
Failure to achieve effective hole cleaning can lead to serious problems, including stuck pipe, excessive torque and drag, annular pack-off, lost circulation, high mud costs and slow drilling rates. Cuttings transport is affected by several interrelated mud and drilling parameters.
Removing cuttings from below the drill bit is still a crucial function of a drilling fluid. The circulatory fluid . . .