Reclosable mechanical annular flow valve
View Patent ↗A mechanical flow control device is provided that allows flow of production fluids along an annular path and across an valve body. A sliding sealing member can be mechanically transitioned between an opened flow position and a closed flow position as desired. The mechanical flow control device may be combined with one or more interventionless flow control devices.
1. A flow control device for an oil or gas well comprising:
an outer housing;
an inner conduit disposed within the outer housing and fixed relative thereto;
a flow path at least partially defined by an annulus between the outer housing and the inner conduit;
at least one flow port disposed within the flow path for communicating flow along the flow path when the port is open and preventing flow along the flow path when the port is closed;
a sealing member disposed within the device and adjacent the at least one flow port, the sealing member having at least two positions relative to the at least one port including an open position in which the sealing member does not prevent flow through the at least one port and a closed position in which the sealing member prevents flow through the at least one port, the sealing member being configured to be capable of moving from the open position to the closed position so as to reclose the flow control device;
a tool profile disposed on the sealing member for engaging a corresponding profile on a service tool for changing the sealing member from its open to its closed position and vice versa; and
an interventionless flow control device coupled to the outer housing comprising a second flow path communicating with first flow path and a valve element that is independent from the sealing member and disposed within the second flow path, the valve element having at least an opened and a closed flow position, such that fluid can flow along the first and second flow paths when the sealing member and valve element are both opened and fluid cannot flow along the flow paths when the sealing member is shifted closed.
2. The device of claim 1 , further comprising a retaining mechanism for releasably retaining the sealing member in the open position, the closed position or both positions.
3. The device of claim 2 , wherein the retaining mechanism comprises a plurality of interfering ribs, one portion of which are disposed adjacent the sealing member and another portion of which are disposed adjacent the inner conduit.
4. The device of claim 1 , wherein the sealing member is an internal sleeve adapted to slide longitudinally relative to the device.
5. The device of claim 4 , wherein the internal sleeve further comprises a pair of sealing rings configured to span the at least one flow port when the sleeve is in the closed position.
6. The device of claim 5 , wherein the sealing rings are manufactured from a material selected from the group consisting of: an elastomer, PEEK, PEKK and a combination thereof.
7. The device of claim 4 , wherein the sleeve is initially releasably fixed to the device in either the opened position or the closed position.
8. The device of claim 1 , wherein the flow of fluid through the flow path tends to urge the sealing member into the opened position.
9. The device of claim 1 , further comprising a retaining mechanism for releasably retaining the sealing member in the open position and in the closed position.
10. The device of claim 9 , wherein the retaining mechanism comprises a plurality of interfering ribs comprising a first portion of said ribs and a second portion of said ribs which are disposed adjacent the sealing member and a third portion of said ribs which are disposed adjacent the inner conduit, the first portion being capable of engaging the third portion for releasably retaining the sealing member in the open position and the second portion being capable of engaging the third portion for releasably retaining the sealing member in the closed position.
11. An interventionless and mechanical flow control assembly having unlimited open and close cycles for an oil or gas well comprising:
an outer housing;
an inner conduit disposed within the outer housing and fixed relative thereto;
a first flow path at least partially defined by an annulus between the outer housing and the inner conduit;
at least one flow port disposed with the first flow path for communicating flow along the first flow path when the port is open and preventing flow along the first flow path when the port is closed;
a sealing member disposed within the device and adjacent the at least one flow port, the sealing member having at least two positions relative to the at least one port including an open position in which the sealing member does not prevent flow through the at least one port and a closed position in which the sealing member prevents flow through the at least one port, the sealing member being configured to be capable of moving from the open position to the closed position so as to reclose the flow control device;
a tool profile disposed on the sealing member for engaging a corresponding profile on a service tool for changing the sealing member from its open to its closed position and vice versa;
an interventionless flow control device coupled to the outer housing and comprising a second flow path communicating with the first flow path, and a valve element disposed within the second flow path and independent from the sealing member, the valve element having at least an opened and a closed position,
such that fluid flowing along the first flow path can flow along the second flow path when the valve element is opened and cannot flow along the second flow path when the valve element is closed, the interventionless device adapted to interventionlessly change the flow condition of second flow path in response to well pressure.
12. The assembly of claim 11 , wherein the interventionless device is a pressure actuated device selected from the group consisting of: a circulating valve, a radial flow valve, an annular flow valve and a combination thereof.
13. The assembly of claim 11 , wherein the interventionless device is initially in the closed position and the sealing member is initially releasably fixed in the open position.
14. The assembly of claim 11 , wherein the interventionless device has been pressure actuated and the sealing member has been moved to the closed position.
15. The assembly of claim 14 , wherein sealing member has been moved again to the open position.
16. The device of claim 11 , further comprising a retaining mechanism for releasably retaining the sealing member in the open position and in the closed position.
17. The device of claim 16 , wherein the retaining mechanism comprises a plurality of interfering ribs, a first portion of said ribs and a second portion of said ribs which are disposed adjacent the sealing member and a third portion of said ribs which are disposed adjacent the inner conduit, the first portion being capable of engaging the third portion for releasably retaining the sealing member in the open position and the second portion being capable of engaging the third portion for releasably retaining the sealing member in the closed position.