Retractable ball seat having a time delay material

Details Retractable ball seat having a time delay material Retractable ball seat having a time delay material

2006-09-18

2008-12-16

Neuder, William P (Department: 3672)

Wells

Processes

Destroying or dissolving well part

C166S317000

Reexamination Certificate

active

07464764

ABSTRACT:
Retractable ball seats having a housing, a seat, and a plug such as a ball are disclosed. The seat has a retracted position that prohibits the ball from passing through the passageway and an expanded position that permits the ball to pass through the passageway. A time delay material, such as a dissolvable material, maintains the seat in the retracted position. The time delay material disintegrates, degrades, or dissolves within a known period of time such that the retractable ball seat can be placed in a desired location in the wellbore and the ball will be released through the passageway within a known period of time.

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