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Addressable Single-Line Valve with a Two-Stage J-Slot

IP.com Disclosure Number: IPCOM000233956D
Publication Date: 2014-Jan-03
Document File: 2 page(s) / 72K

Publishing Venue

The IP.com Prior Art Database

Abstract

A new method of forming an addressable valve is created. This new addressable valve is addressable by the number of pressure cycles that are applied. This invention allows for a number of valves to be placed on a single line and for them to each to be controlled individually. This invention has applications in controlling an interval control valve (ICV), in selecting the location for chemical injection, in opening or closing a ball valve or any in other application that requires applying pressure to operate a function. The two-stage feature of the J-slot profile allows the valve to be reset if the pressure drops below a predetermined value.

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Addressable Single‐Line Valve with a Two‐Stage J‐Slot

A new method of forming an addressable valve is created. This new addressable valve is addressable by the number of pressure cycles that are applied. This invention allows for a number of valves to be placed on a single line and for them to each to be controlled individually. This invention has applications in controlling an interval control valve (ICV), in selecting the location for chemical injection, in opening or closing a ball valve or any in other application that requires applying pressure to operate a function. The two-stage feature of the J-slot profile allows the valve to be reset if the pressure drops below a predetermined value.

Two‐Stage J‐Slot

The addressable valve system described here is created with a two-stage J-slot profile. The J- slot profile is used directly to open and to close a valve.

A standard J-slot mechanism has only one stage. In a standard one-stage J-slot, a profile creates a profile to guide the movement of a pin. Upward and downward movement in a standard J-slot creates indexed movement of the pin. A J-slot mechanism is a simple yet reliable method for activating downhole tools. However, it is possible to "get lost" in the axial movements and to be uncertain which index is being addressed by the J-slot.

Like a one-stage J-slot, the two-stage J-slot allows for a valve that opens after a specific number of pressure cycles. The two-stage feature of the J-slot profile allows the valve to be reset if the pressure drops below a predetermined value. The ability to reset the J-slot ensures that the operator will never get lost in the pressure cycles. Reducing the pressure forces the J- slot to reset to its initial position.

This two-stage J-slot profile allows for a series of valves to be located on a common control line (or any other pressure source). Figure 1 shows a general schematic of the profile. The number of cycles is dependent on the size of the valve. The location of the 'open' position is shown on the final cycle but it can be moved to any of the cycles as required.

6,000 psi

3,000 psi

1,000 psi Figure 1: Schematic of the two-stage J-slot

OPEN

D

B

C

E

A



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In the figure, the pin is represented by the circle located at position A. I...