Circulating Sliding Sleeves is a high performance, non-elastomeric equalizing sliding sleeve, which allows communication between the tubing and casing annulus for circulation. Circulating sliding sleeve allows for fluid loss control & well control and activated open without intervention by surface tubing pressure.
Circulation Heaters provides ready made means to install electric heating with a minimal amount of time and labor. This is accomplished by combining heating elements, vessels, insulation, terminal enclosure, mounting brackets, and inlet and outlet connections into a complete assembly. It is made from NPT screw plug or ANSI flange heater assemblies mated with a pressure vessel. Circulation heaters are designed to heat forced-circulation air, gases or liquids. It maximizes dielectric strength, heat transfer and life. It also reduces the heat loss from the vessel.