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7 Cards in this Set

  • Front
  • Back
Deepwater cementing objectives
Obtain a Competent Hydraulic Seal,Provide Structural Support,Long Term Cement Sheath Durability,Short WOC
Deepwater problems
Shallow water flow
Low temperature in shallow strings
Risk of losses in shallow strings
Mud displacement
Options to control shallow water flow
Identify potential shallow water flow zones,Drill pilot holes,Best drilling practices
Cement technology for deepwater applications
Required Slurry Properties
Density between pore and frac
Optimized rheology for mud removal
Zero free water
No sedimentation
Fluid loss control (<50mL/30min)
Short critical hydration period
High early compressive strength
Low heat of hydration (gas hydrate control)
Low permeability
DeepCEM additives
(D185, D186 – liquids)
DeepCRETE Application Range
Water salinity: fresh to 37% salt
Density: 12 - 13.5 lbm/gal
Temperature: 40º - 80ºF
Pressure: surface to 5000 psi