Challenge: As the international drilling contractor prepared to drill a
22-in wellbore in the Eagle Ford, the two competitor shakers on the rig would
be unable to cost-effectively meet the aggressive drilling requirements.
Without an alternative, rates of penetration (ROP) would be restricted and
waste hauloff costs excessive.
Solution: M-I SWACO recommended the contractor replace the two existing
units with a single MD-2 dual-deck shaker with composite screen technology.
Capable of switching on-the-fly between balanced elliptical and progressive
elliptical motions as drilling conditions change, the M-I SWACO MD-2 shaker
routinely exhibits high-capacity separation, producing drier cuttings and
reducing both operational demands and costs.
Results: The MD-2 shale shaker effectively handled 100% of the flow
throughout the top-hole section. Though well below its maximum flow-rate
capacity, a comparative evaluation showed that the MD-2 handled 658 gpm with
only 60% screen coverage on the primary deck, and at a zero-degree deck angle.
Though the deck angle could have been raised to 3°, it was maintained at
zero to effectively use more screen area and prolong screen life.