# US 12,006,787 B2 · Delayed opening fluid communication valve

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- Number: US 12,006,787 B2
- Document ID: US12006787B2
- Status: Granted
- Kind: B2
- Application number: 17/889,467
- Filed: 2022-08-17
- Published: 2024-02-22
- Granted: 2024-06-11
- Earliest claimed: 2022-08-17
- Assignees: Summit Casing Services, LLC
- Applicants: Summit Casing Services, LLC
- Inventors: Colten T. Francis; Ian Beckett; Andrew M. Eldridge
- Web page: https://patentgrep.com/patent/US12006787B2

## CPC

- E21B 34/063: {Valve or closure with destructible element, e.g. frangible disc (E21B34/103 takes precedence)}
- E21B 2200/06: Sleeve valves
- E21B 2200/08: Down-hole devices using materials which decompose under well-bore conditions
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

## Abstract

A casing valve is disclosed that includes a first component configured to connect to a casing string, a second component configured to connect to the casing string, a mandrel disposed between the first component and the second component, the mandrel having a plurality of ports, a housing disposed outside of the mandrel, the housing having a plurality of ports, a piston disposed between the mandrel and the housing and configured to move in a first direction from a first position that forms a barrier between the ports of the mandrel and the ports of the housing to a second position that is adjacent to the ports of the mandrel and the ports of the housing and a dissolvable component configured to restrain the piston in the first position and to dissolve when exposed to a fluid to release the piston.

## Claims

### Claim 1

A casing valve, comprising:
a first component configured to connect to a casing string;
a second component configured to connect to the casing string;
a mandrel disposed between the first component and the second component, the mandrel having a plurality of ports;
a housing disposed outside of the mandrel, the housing having a plurality of ports;
a piston disposed between the mandrel and the housing and configured to move in a first direction from a first position that forms a barrier between the ports of the mandrel and the ports of the housing to a second position that is adjacent to the ports of the mandrel and the ports of the housing;
a dissolvable component configured to restrain the piston in the first position and to dissolve when exposed to a fluid to release the piston; and
a retainer configured to hold the dissolvable component in a first position.

### Claim 2 (depends on 1)

The casing valve of claim 1 wherein the dissolvable component comprises a dissolvable shear ring.

### Claim 3 (depends on 2)

The casing valve of claim 2 further comprising a shear ring retainer configured to hold the shear ring in a first position.

### Claim 4 (depends on 1)

The casing valve of claim 1 further comprising a plurality of shear screws configured to hold the piston in position until a shear force is applied.

### Claim 5 (depends on 1)

The casing valve of claim 1 wherein the casing valve is a toe initiation valve.

### Claim 6 (depends on 1)

The casing valve of claim 1 further comprising one or more magnets configured to hold the piston in an open position.

### Claim 7 (depends on 1)

The casing valve of claim 1 further comprising an atmospheric chamber disposed adjacent to the dissolvable component.

### Claim 8 (depends on 7)

The casing valve of claim 7 further comprising a rupture disc disposed adjacent to the atmospheric chamber.

### Claim 9

A method of manufacturing a well bore tool, comprising:
forming a first component configured to connect to a casing string;
forming a second component configured to connect to the casing string;
forming a mandrel to be disposed between the first component and the second component, the mandrel having a plurality of ports;
forming a housing to be disposed outside of the mandrel, the housing having a plurality of ports;
forming a piston to be disposed between the mandrel and the housing and configured to move in a first direction from a first position that forms a barrier between the ports of the mandrel and the ports of the housing to a second position that is adjacent to the ports of the mandrel and the ports of the housing;
forming a dissolvable component configured to restrain the piston in the first position and to dissolve when exposed to a fluid to release the piston; and
forming a retainer configured to hold the dissolvable component in a first position.

### Claim 10 (depends on 9)

The method of claim 9 wherein forming the dissolvable component comprises forming a dissolvable shear ring.

### Claim 11 (depends on 9)

The method of claim 9 further comprising installing a plurality of shear screws configured to hold the piston in position until a shear force is applied.

### Claim 12 (depends on 9)

The method of claim 9 further comprising installing one or more magnets configured to hold the piston in an open position.

### Claim 13 (depends on 9)

The method of claim 9 further comprising a forming shear ring retainer configured to hold the shear ring in a first position.

### Claim 14 (depends on 9)

The method of claim 9 further comprising forming an atmospheric chamber disposed adjacent to the dissolvable component.

### Claim 15 (depends on 9)

The method of claim 9 further comprising forming a rupture disc disposed adjacent to the atmospheric chamber.

### Claim 16

A casing valve, comprising:
a first component configured to connect to a casing string;
a second component configured to connect to the casing string;
a mandrel disposed between the first component and the second component, the mandrel having a plurality of ports;
a housing disposed outside of the mandrel, the housing having a plurality of ports;
a piston disposed between the mandrel and the housing and configured to move in a first direction from a first position that forms a barrier between the ports of the mandrel and the ports of the housing to a second position that is adjacent to the ports of the mandrel and the ports of the housing; and
a dissolvable component configured to restrain the piston in the first position and to dissolve when exposed to a fluid for a predetermined period of time to release the piston, wherein the dissolvable component comprises a dissolvable ceramic.

### Claim 17 (depends on 16)

The casing valve of claim 16 wherein the dissolvable component comprises a dissolvable coated ceramic.

### Claim 18 (depends on 16)

The casing valve of claim 16 further comprising a plurality of shear screws configured to hold the piston in position until a shear force is applied.

### Claim 19 (depends on 16)

The casing valve of claim 16 wherein the casing valve is a toe initiation valve.

### Claim 20 (depends on 16)

The casing valve of claim 16 further comprising one or more magnets configured to hold the piston in an open position.