Achieve on-demand sealing even in irregular boreholes

These frac packers are made up to a casing string that is run into the open hole. Rotation is possible while running in, and full casing characteristics are maintained. Once in position, the lower end of the casing string is sealed and the internal pressure increased by pumping from surface.

This pressure is transmitted through the expansion port to the packer’s integral stainless steel sleeve. The sleeve expands out into the annulus between the casing and borehole, conforming to the shape of the wellbore and isolating the annulus below the packer from the annulus above.

The patented pressure-balanced double sleeve can retain a seal despite cycling temperatures and varying differential pressures in the annulus. Expansion of the sleeve also centralizes the casing.