APPLICATION AND PERFORMANCE OF ROTATIONAL MOLDED LINERS IN SIMULATED OIL AND GAS WELL ENVIRONMENTS

摘要

The industry's use of polymer coatings to protect oilfield pipe is widely accepted. These coatings, however, are restricted to fine powders and liquids that deposit thin coatings, or pre-formed inserted polyethylene or fiberglass liners which provide thick damage resistant coatings to protect pipe from deterioration. Each of the current coating or lining systems have performance limitations in that, either the thin coating provides limited mechanical damage resistance, or that of inserted liners that restricts the inner pipe diameter, may also collapse if trapped gases between the pipe and liner annulus pressures are sufficient. This study utilized rotational molded techniques to apply thick damage resistant coatings, and subjected these coatings to simulated oil well environments. It also reveals the suitability of rotational molding techniques to apply thick damage resistant coating for oilfield pipe applications, and offers possible oil well environments that may benefit from their use.