Net for grassing

Details Net for grassing Net for grassing

E - Fixed Constructions

02

D

61/45, 87/9

E02D 17/20 (2006.01) A01G 1/00 (2006.01)

Patent

CA 2007831

The present invention provides an apparatus for anchoring of equipment within the interior bore of a section of a subterranean well conduit, and particularly for insertion of such equipment. The apparatus comprises a cylindrical housing and a conically tapered surface around the exterior of the housing which is radially larger at its upper end and tapered to a radially smaller lower end. A seal body is provided which is carried exteriorly around the housing and has its interior tapered end reverse to that of the conically tapered surface around the housing and which is selectively longitudinally movable relative to the housing from a first, unset position on the conduit section to a second, set position on the conduit section and radially expandable during the movement relative to the housing. Anchoring means are carried exteriorly around the body for securing the apparatus to the conduit section against upward and downward movement of the apparatus. A bi-directional anchoring system is provided such that force received on or through either end of the apparatus drives the apparatus into further anchoring engagement with the conduit section. A metal- to-metal primary and elastomeric secondary seal system are provided on the apparatus with the secondary elastomeric seal having zero extrusion and slip body having a ductility of from between about 1% and about 15%.

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