Annular gas lift valve

摘要

A system for producing hydrocarbons may include a production control device positioned along a production flow line. The production control device may include an enclosure having an interior space and an isolation device disposed in the interior space. The isolation device may divide the interior space into an upper interior space and a lower interior space. The production control device may also include a first flow control device positioned in the upper interior space, and a second flow control device positioned in the upper interior space. The first flow control device may be responsive to a control signal transmitted via a control line from a surface location. The second flow control device may reactively block fluid flow from the lower interior section to the upper interior section when a pressure differential between the upper interior space and the lower interior space falls below a preset value.

主权项

1. A system for producing hydrocarbons from a well having a borehole, comprising:
a production flow line disposed in the borehole; and a production control device positioned along the production flow line, the production control device including:
an enclosure having an interior space,an isolation device disposed in the interior space, the isolation device dividing the interior space into an upper interior space and a lower interior space,a first flow control device positioned in the upper interior space and controlling flow along the production flow line, the first flow control device being responsive to a control signal transmitted via a control line from a surface location, anda second flow control device positioned in the upper interior space and controlling fluid flow between the upper interior space and the lower interior space, the second flow control device reactively blocking fluid flow from the lower interior section to the upper interior section when a pressure differential between the upper interior space and the lower interior space falls below a preset value, wherein the second flow control device is configured to move to an open position to allow fluid flow between the upper interior space and the lower interior space by increasing a gas pressure in the upper interior space.