초록 ▼

A device for regulating fluid flow in a well is provided. The device may include: a body member having a central bore extending therethrough, at least one flow port, and a first valve seat; a sleeve member movably disposed within the central bore of the body member, and having a second valve seat ad

A device for regulating fluid flow in a well is provided. The device may include: a body member having a central bore extending therethrough, at least one flow port, and a first valve seat; a sleeve member movably disposed within the central bore of the body member, and having a second valve seat adapted for cooperable sealing engagement with the first valve seat; means for selectively controlling movement of the sleeve member to regulate fluid flow through the at least one flow port; and conduit means for transmitting energy to the movement means. The conduit means may include a first and a second hydraulic control line, a single hydraulic control line, or a single electrical conductor. The movement means may include: a piston connected to the sleeve member and movable in response to a combination of hydraulic fluid, pressurized gas, spring force, and/or annulus pressure; or an electric motor connected to the sleeve member.

대표청구항 ▼

[ What is claimed is:] [1.]1. A selectively operable flow control device for regulating fluid flow in a well, comprising:a body member having a central bore extending therethrough, at least one flow port, and a first valve seat, and being connected to a production tubing disposed within the well;a s

[ What is claimed is:] [1.]1. A selectively operable flow control device for regulating fluid flow in a well, comprising:a body member having a central bore extending therethrough, at least one flow port, and a first valve seat, and being connected to a production tubing disposed within the well;a sleeve member movably disposed within the central bore of the body member, and having a second valve seat adapted for cooperable sealing engagement with the first valve seat, fluid flow being restricted between the production tubing and the at least one flow port when the first and second valve seats are in sealing engagement, and fluid flow being permitted between the production tubing and the at least one flow port when the first and second valve seats are not in sealing engagement;an electric motor connected to the body member and adapted to move the sleeve member longitudinally within the central bore of the body member upon electrical actuation thereof; andan electrical conductor connected between a source of electricity and the motor. [16.]16. A selectively operable flow control device for regulating fluid flow in a well, comprising:a body member having a central bore extending therethrough, at least one flow port, and a first valve seat, and being connected to a production tubing disposed within the well;a sleeve member movably disposed within the central bore of the body member, and having a second valve seat adapted for cooperable sealing engagement with the first valve seat, fluid flow being restricted between the production tubing and the at least one flow port when the first and second valve seats are in sealing engagement, and fluid flow being permitted between the production tubing and the at least one flow port when the first and second valve seats are not in sealing engagement;means for selectively controlling movement of the sleeve member to regulate fluid flow through the at least one flow port; andconduit means for transmitting energy to the movement means.