Compensating bridge plug

Details Compensating bridge plug Compensating bridge plug

1979-05-21

1981-11-10

Leppink, James A.

Wells

Packers or plugs

With expanding anchor

166156, 166313, E21B 33129

Patent

active

042992818

ABSTRACT:
A well tool or bridge plug for blocking fluid communication through well tubing. The present invention allows a fixed volume of liquid to be trapped within the well tubing while installing the plug. A piston means is releasably secured within the bridge plug. The piston means can slide relative to the housing of the bridge plug to compensate for any liquid displaced by inserting the bridge plug into the well tubing. The present invention is particularly adapted for use in through the flow line (TFL) or pumpdown well completions. However, the present invention could be used with wireline equipment.

REFERENCES:
patent: 2888080 (1959-05-01), Tausch et al.
patent: 2970648 (1961-02-01), Daffin et al.
patent: 3002563 (1961-10-01), Crowe
patent: 3029872 (1962-04-01), Hanes
patent: 3381753 (1968-05-01), Fredd
patent: 3448803 (1969-06-01), Sizer
patent: 3664427 (1972-05-01), Deaton
patent: 3680637 (1972-08-01), Raulins
patent: 3739850 (1973-06-01), Sizer

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