Metal sealing adjustable casing sub

摘要

An adjustable casing sub having an outer housing, an inner housing insertable into the outer housing, and a ratcheting system for coupling the inner housing within the outer housing. An annulus is between a portion of the inner and outer housing, the annulus including an inwardly tapered section. A metal faced seal is disposed in the annulus, wherein the metal faced seal includes a sliding surface and a compressive sealing surface. The sliding surface may include a malleable inlay and the compressive sealing surface may include a spring like element. Moreover, the metal faced seal radial thickness is greater than the inwardly tapered section radial thickness.

主权项

1. In a well production apparatus, a first housing and a second housing coaxially and telescopingly engaged with the first housing, an improved seal between the housings comprising:
a radial seal body circumscribing an axis, the body having an elongate section aligned with the axis; elastically deformable cantilevered arms extending from respective ends of the elongate section; sealing members extending from the ends of the cantilevered arms configured for sealing engagement with one of the housings on a first side of the seal body; and a plurality of ductile metal inlays on a second side of the seal body opposite to the first side.