초록 ▼

A system and method for controlling production fluid flow from a chamber extending between a casing disposed in a downhole bore and tubing disposed in the casing. A plurality of valves are disposed in respective openings formed in the tubing, and a passage is formed in each valve for connecting the

A system and method for controlling production fluid flow from a chamber extending between a casing disposed in a downhole bore and tubing disposed in the casing. A plurality of valves are disposed in respective openings formed in the tubing, and a passage is formed in each valve for connecting the chamber and the tubing interior. The valves are selectively closed to prevent any fluid flow through the passage, and selectively opened to permit fluid flow from the chamber, through the passage, and into the interior of the tubing. Thus, the volume of fluid passing from the chamber, through the valve members, and to the interior of the tubing is controlled.

대표청구항 ▼

[ What is claimed is:] [8.]8. A method of controlling production fluid flow from a chamber extending between a casing disposed in a downhole bore and tubing disposed in the casing, comprising the steps of disposing a plurality of valves in respective openings formed in the tubing, connecting the cha

[ What is claimed is:] [8.]8. A method of controlling production fluid flow from a chamber extending between a casing disposed in a downhole bore and tubing disposed in the casing, comprising the steps of disposing a plurality of valves in respective openings formed in the tubing, connecting the chamber and the tubing interior with a passage formed through each of the valves, providing valve members for the passages for selectively closing the passages to prevent any fluid flow through the passage, and opening the passages to permit fluid flow from the chamber, through the passage, and into the interior of the tubing, urging a spring-loaded detente into engagement with the valve member to apply a first force to the valve member to retain it in its open position and its closed position, applying a second force to each valve member to retain it in its closed position; and overcoming the first force to enable the valve member to move from its open position to its closed position, and overcoming the second force to enable the valve member to move from its closed position to its open position.