WaxRite™ describes a patented process that involves factory applied wax treatments to coat and seal sand control screens. The screen’s porous open flow area is filled and sealed during the application process, and a thin wax film is placed over the entire surface which serves to lubricate the joint, resulting in reduced torque and drag during deployment.Download Brochure » Contact Us »
The joint of screen is simultaneously rotated and advanced horizontally at a controlled rate through the waxing assembly engineered for that screen type. Fluid wax penetrates the screen openings and filtration media, and any excess wax is automatically wiped off, recovered, and recycled. The controlled solidification rate delivers an integral seal of the entire open flow area. Each process involves tightly controlled steps that ensure:
Drilling longer laterals saves millions in reservoir development costs, and fewer wells are needed to access the reserves. This exploitation strategy, however, increases several risks and costs:
The WaxRite process allows a sand control screen to behave similar to casing when it is being run in and landed in the pay zone. The specific benefits will depend on the inherent strength of each screen type under the tensile, torsional, and compressive load forces encountered during deployment.
Starting production causes the wax to melt or dissolve in production fluids. In low temperature conditions, solvents are used to facilitate removal of the wax thus opening the screen for production or injection.
Why Is Understanding Sand Retention And Flow Behavior At The Sand-Screen Interface Important?
Waxing screens has opened a whole new range of opportunities for deploying sand control and downhole flow control in long horizontal wells that were never possible before.
With the WaxRite process, cleaning up residual drilling fluids and filter cake can be done while the drill rig is in place. In addition, reduced torque and drag is an important advantage for extended reach wells.
Absolute’s engineering team has been researching, field testing and refining wax application processes since 2011. Commercial production began in 2012. Today, these processes are tailored to suit full bore screens as well as screens structured with stand off from the base pipe. The specific type of screen and the sealant properties are customized to reservoir temperature and conditions.