Benefits

• Eliminate remedial squeeze jobs
• Prevent annular casing pressure
• Provides real-time indication of the cement curing process
• Improved cement logs
• No adverse affects on the cement properties
• Simple, cost effective solution to control fluid migration

Field Operation

The patented cement pulsation process starts immediately after cement pumping stops and the annular BOP is closed. Low pressure
pulses, typically in the range of 80 to 200 psi, are applied to the casing annulus at a time interval of 30 to 60 seconds.  Pulsing continues until the compressible volume levels-off or the laboratory thickening time indicates the cement has reached 70 Bc, usually in 4 to 6 hours.

Cement Pulsation Equipment Schematic

Equipment Specifications

• 9'Lx6'Wx8'H
• Weight: 5,300 lbs
• Process Control
• 2 Tank (ASME)
  • 200 gallon
  • 200 psi working pressure
• Sensors
  • water level
  • annulus pressure
  • air tanks pressure
  • discharge flow

Hydrostatic Pressure Decrease
During the Cement Setting Process