Pump-through pressure seat for use in a wellbore

Details Pump-through pressure seat for use in a wellbore Pump-through pressure seat for use in a wellbore

1991-08-08

1992-09-15

Bui, Thuy M.

Wells

Processes

Placing or shifting well part

166154, 166316, 166382, E21B 4300, E21B 2300

Patent

active

051469928

ABSTRACT:
A seal assembly is provided for use in a fluid flow conduit, and includes a valve seat and a valve plug. The valve seat includes a seating lip formed at least in-part of yieldable material. The valve plug is passed through the fluid flow conduit and caused to sealingly engage the valve seat. Together the valve seat and valve plug form an obstruction to the passage of fluid within the fluid flow conduit, and pressure is developed upstream. At a predetermined pressure level the valve deforms the valve seat, and is passed therethrough. A larger valve plug can be passed until it seats against the enlarged valve seat. The pass-through process can be repeated.

REFERENCES:
patent: 4583593 (1986-04-01), Zunkel et al.
patent: 4589495 (1986-05-01), Langer et al.
patent: 4828037 (1989-05-01), Lindsey et al.
patent: 4862966 (1989-09-01), Lindsey et al.

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