Systems / Completion / Coil Tubing Annular Frac
Coil Tubing Annular Frac
The Gator Perforator with a compression set packer can be used to perforate and annular frac a wellbore in a single trip. The combination of perforating and stimulating allows for a more pinpoint frac to ensure maximum returns from each zone. This system will accommodate acid or proppant. The combination of a single trip and Coil tubing conveyed allows for a quick operation. This ensure that the client puts the well back on to production as soon as possible.
- Run in hole to desired depth (Packer in "run in" position; last motion up to close the ULS Sub).
- Activate Gator by flowing at 200 L/min to close VCV & Pressure up to 2000 psi; watch for cut signature or drop in tubing pressure to indicate successful cut.
- Pull up 1 meter to retract blades.
- Position the Blast Joint over the perforations and set Auto J Packer with a compression stroke. This will also open the ULS Sub.
- Ready for frac ops.
- Flow thru the CT at 50 L/min. This will exit out the VCV & ULS and allow positive flow to keep fluid moving out the coil. It will also allow for the pressure to equalize in the CT to keep it from collapsing.
- Pump frac down the annulus of the coil.
- Once frac is pumped away, follow with an overflush.
- Pull up to next zone and repeat until all stages are complete.
Bottom hole assembly
- Unloader (ULS) Tool
Tension/Closed; Compression/Open
- GATOR PERFORATOR
Hydro-Mechanical Perforator
More about the Gator Perforator → - Velocity Control Valve (VCV)
Pump above 200 L/min closes valve
- Auto J Packer with Unloader
For lower annular isolation
- Collar Locator
For lower annular isolation
- Ported Bull Nose
to allow unloader to flow thru
