Cement Pulsation

In several areas of Canada (particularly North East Alberta), surface casing vent flows and gas migration are common occurrences, which can be very expensive to repair. Trican Cement Pulsation is a relatively new technology that is proving to be very effective in eliminating such problems.

Cement pulsation uses pulsating pressure waves that break the gel strength of the cement slurry as it begins to set up. Soon after the cement slurry has been placed in the annulus, it begins to develop gel strength as it approaches its thickening time. As this gel strength continues to develop, the cement column begins to support itself. When the formation pressure (gas) exceeds the hydrostatic pressure of the cement column at any point along the wellbore, the gas will enter the slurry, causing a channel, which can extend all the way to the surface.

Cement pulsation breaks any gel strength that has developed and maintains the cement in liquid form until it reaches its thickening time. At this point, it sets up almost immediately, which allows the cement column to maintain hydrostatic pressure on the wellbore as long as possible before it has reached its thickening time.

Pulsation can only be applied when using conventional cement blends. Thixotropic blends cannot be used with the pulsation unit.

* This technology has resulted in a 96% success rate in the prevention of gas migration in Eastern Alberta.

Technical Papers (pdf) ......................................................................................... Burst Collars for Multi-zone Completions in Horizontal Wellbores Acid-Soluble Cement for Unconventional Gas Completions A Novel Means of Proppant Consolidation Novel Self-Generating Acid Integration of Montney Microseismic Information into a Reservoir Simulator Improving Efficiency of Coiled Tubing Operations on Vankor Field Pre-Fracture Injection Tests Performed in the Brassey Field Polymer Reduction Leads to Increased Success Reverse Circulating Cement Technique for Subsurface Pipeline Increased Applications of Plastic Tubulars in O&G Prod & Injection Pre-job test Protocol for Cement Pulsation Development of OTF Frac Fluid Cement Pulsation Treatment in Wells Cement Pulsation to Control Gas Migration (SPE) Comparison of Three Different CO2 Energized Frac Fluids Frac Fluid Properties New Generation of Lightweight Cement A Comparison Between Foamed & Lightweight Cements (CADE) Cement Pulsation to Control Gas Migration (CADE) Improved Proppant Transport System for SlickWater Shale Fracturing Implications for Characterization of Unconventional Gas Reservoirs A Comparison Between Foamed & Lightweight Cements (CIPC) Slag Cementing Versus Conventional Cementing Proppant Flowback Control in Deviated Shallow Gas Wells Squeeze Cementing of Low Pressure Formations Development of a New Generation of Gas Control Cements Review of Dry Blending Techniques of Lightweight Cements Chemical Stimulation of Heavy Oil Wells

Trican Acculite^TM Cements
AquaPlug^TM(lost circulation control)
Trican ASC^TM (Acid Soluble Cement blend)
Cement Simulator(process)
Trican LCP^TM (lost circulation control)
Optimum Flush^TM (preflush)
TDF-3^TM (additive)
TDH-2^TM (Trican Delayed Hydration additive)
Titanium Lightweight Cements (blends)
TLA^TM (Trican Latex Additive)
TWR-3^TM (additive)
CFL-7^TM(additive)
LCF^TM(additive)

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