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   You are here: SLB.com > Products & Services > Cementing > Mud Removal


Mud Removal



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Based on well geometry and trajectory, downhole fluid properties, volumes, pump rates and casing centralization, Schlumberger engineers use WELLCLEAN II to predict the efficiency of mud removal and identify whether a mud channel will be left in place.


Benefits
  • Ensure zonal isolation
  • Reduce need for remedial work
  • Improve production
  • Improve effectiveness of stimulation
  • Eliminate production of unwanted downhole fluids
  • Reduce occurrence of sustained casing pressure
  • Minimize casing corrosion through improved cement bonding

Effective drilling-fluid removal is a prerequisite for primary cementing success. Mud left in the wellbore prevents effective isolation. This can result in stimulation out of zone, production of unwanted fluids, loss of hydrocarbons to low-pressure zones, sustained casing pressure, underground blowouts, or casing corrosion.

WELLCLEAN II Engineering Solution
Increase cementing success
WELLCLEAN II engineering solution comprises innovative products and tools. Improve your cementing jobs at the least expense. Tools include CemCADE cementing design and evaluation software and the WELLCLEAN II simulator.

Improve flow around the annulus
Since fluids in the annulus tend to flow more freely on the wider side, casing centralization is critical. The CemCADE centralization module assists the engineer in determining the proper centralization for effective mud removal.

Remove mud completely
Mud removal can be achieved in laminar or turbulent flow regimes. The WELLCLEAN II simulator aids the Schlumberger team in making the right choice. The simulator indicates cement coverage, the risk of a mud film or channel and the turbulent contact time.

Ensure proper zonal isolation
The team helps you improve mud displacement through spacer and cement design. MUDPUSH II spacers and chemical washes provide the required rheology and displacement regime for proper mud removal.


Related resources
Request more information about Mud Removal and other Schlumberger innovations.





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