# US 2021/0277744 A1 · Pressure surge valve

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- Number: US 2021/0277744 A1
- Document ID: US20210277744A1
- Status: Published application
- Kind: A1
- Application number: 16/455,637
- Filed: 2019-06-27
- Published: 2021-09-09
- Earliest claimed: 2018-06-27
- Inventors: Ian Schuur
- Web page: https://patentgrep.com/patent/US20210277744A1

## CPC

- E21B 34/08: responsive to flow or pressure of the fluid obtained (E21B34/10 takes precedence)
- F16K 17/0406: {in the form of balls}
- F16K 17/10: with auxiliary valve for fluid operation of the main valve
- F16K 31/1223: {one side of the piston being acted upon by the circulating fluid}
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}

## Abstract

A pressure surge valve system comprises a mounting assembly, a closure mechanism, and an activation mechanism. The activation system in the preferred embodiment may comprise of an upper bellow chamber or in an alternative embodiment an upper compensation piston chamber. Both embodiments of the activation mechanism have a corresponding lower chamber to the respective upper chamber and a pilot mechanism, which triggers the activation mechanism to activate the closure mechanism, such as a ball closure, based on ambient pressure.

## Claims

### Claim 1

A pressure surge valve system comprising:
a mounting assembly;
a closure mechanism;
an activation mechanism, further comprising of an upper chamber and a pilot mechanism which triggers the activation mechanism to activate the closure mechanism based on ambient pressure; and
a lower chamber.

### Claim 2 (depends on 1)

The closure mechanism of claim 1 comprising:
a ball closure;
two housing seals;
a soft seat; and
a hard seat.

### Claim 3 (depends on 1)

The pilot mechanism of claim 1 comprising:
a metering valve;
two incompressible fluid transfer controlling one-way check valves.

### Claim 4 (depends on 1)

The upper chamber of claim 1, wherein the upper chamber a bellow chamber.

### Claim 5 (depends on 1)

The upper chamber of claim 1, wherein the upper chamber is a compensation piston chamber.

### Claim 6

A pressure activation mechanism comprising:
an upper bellows chamber;
a pilot mechanism which triggers the activation mechanism to activate a closure mechanism based on ambient pressure: and
a lower chamber.

### Claim 7

A compensating piston configuration activation mechanism comprising:
an upper compensation piston chamber:
a pilot mechanism which triggers the activation mechanism to activate a closure mechanism based on ambient pressure; and
a lower chamber.