E-Vac A Production Optimization Technology

E-Vac “A Production Optimization Technology”!  In this well cleanout cleanout process, our proprietary and patented E-Vac tool is delivered into

a wellbore via dual coiled tubing using the venturi principal to vacuum solids and liquids from well bores. The primary function of this procedure is to create a low pressure environment in the well to pump fluid and solids to surface to clean the well out in a pressure balanced state. Simultaneously while cleaning, multiple custom jet nozzles breakdown, slurry and flush solids blockages from the wellbore to the surface.

Well Cleanout Procedure – Venturi Principal

!  The E-Vac system uses a “clean as you go” approach with a motor fluid “thief valve” that directs a desired volume of fluid to the wash nozzles for cleaning action at between 3000 to 5000 psi.

!  Historical experience has been collected in several reservoir types from light oil to CHOPS to thermal heavy oil recovery.

E-Vac – System Benefits

System benefits: Pioneered in Alberta in CBM & CHOP’s environments Proven Technology

!  Operations successfully conducted in multiple reservoir types in multiple regions worldwide

Versatile !  Permanent & Semi Permanent pumping operations in vertical, deviated and horizontal well configurations. !  Suited for production, frac return and well liner cleanouts and can be used as a pipeline cleaning system. !  Wide range from very low to high pressure wells of varying well depths

Robust !  Tool designed to mitigate pump wear reducing time on location

Efficient !  High flow velocities in coil !  Customer pump delivers greater return volumes for a given injection rates compared with traditional jet

pumps !  100% of jetting volumes utilized to create greatest well cleaning action

Cost Effective !  Rig-less well servicing via conventional CTU eliminating the requirement for nitrogen and surfactant

Non- Invasive !  Pressure Balanced wellbore cleanouts

Reduced Footprint !  Simple rig up reduces equipment and personnel mobilization and associated cost

Engineered Dual Action Jet Pump

Underbalance Condition

Concurrent Jetting and vac-ing breaks sol ids bridges in the well & returns mixed injection & production fluid and solids to surface

System Benefits / Customer Value EFFICIENCY – This custom designed and patented “E-Vac” tool increases lift efficiency considerably when compared to traditional Jet Pump performance thereby facilitating better cleaning at faster penetration rates thereby reducing customer costs. RESULTS - The jetting action of the pump is superior to competitive “Vac” systems where 100% of the jetting power is utilized. The unique phased multiple jetting ports configured slurry solids with fluids during jetting with the greatest turbulence and speed possible combined to clean the well most efficiently. DURABILITY – The E-Vac tool handles formation fines in a more effective way. The unique configuration of this pump mitigates mixing tube erosion and better directs and fluidizes the solids through the stream to avoid contact with the pump.

E-Vac Compared to Traditional Jet Pump Performance

Hydraulic Head Pressure Bench Tests

E-Vac Process & Achievements

!  Proven Technology with Top Tier Energy companies

!  Proven ability to handle high solids recoveries and high gas content

!  114.3 mm (4.5 inch) inch and greater casing & liner sizes accommodated

For more information contact Scott Kiser at (403) 463-4740 or by email at scott.kiser@cjstech.com