Wells – Processes – Disassembling well part
Patent
1993-12-06
1995-10-10
Schoeppel, Roger J.
Wells
Processes
Disassembling well part
166379, 166380, 166382, 166387, E21B 33068
Patent
active
054563208
ABSTRACT:
A casing seal and casing spool for providing a high pressure seal of the casing pipe of a well during fracturing operations. The casing seal includes a sleeve, a pressure-reactive ring seal, a retainer ring, a split ring and a lock ring. The sleeve has a center bore and a counter bore which is shaped to fit the end of a casing pipe. The retainer ring has an upper recess to accommodate deformation of the ring seal as the ring seal reacts to high pressure. Assembled from four split ring members, the split ring has an upper lip for insertion into an annular groove in a bore and a lower ring recess to accommodate the lock ring. The lock ring is secured in the ring recess of the split ring with threaded fasteners. The casing spool includes an upper flange, a lower flange, a center bore extending between the flanges, an upper counter bore and a lower counter bore. The counter bores of the casing spool are shaped to receive the casing seal and an annular groove is provided in the lower counter bore to receive the lip of the split ring. The protrusion of the split ring lip into the annular groove holds the casing seal in the counter bores and the lock ring secures the assembly of the split ring.
REFERENCES:
patent: 2134311 (1938-10-01), Minor et al.
patent: 3289765 (1966-12-01), Hynes
patent: 3561531 (1971-02-01), Miller
patent: 3738426 (1973-06-01), Drouin
patent: 4326587 (1982-04-01), Gauthier et al.
patent: 5114158 (1992-05-01), Le
Schoeppel Roger J.
Total Tool, Inc.
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