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 -or 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;a sleeve member movably disposed within the central bore of the body mem

[ 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;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;a piston connected to the sleeve member and movably disposed within the central bore of the body member in response to application of pressurized fluid;a first and a second hydraulic conduit connected between a source of pressurized fluid and the body member, the first hydraulic conduit being in fluid communication with a first side of the piston, and the second hydraulic conduit being in fluid communication with a second side of the piston; anda position holder cooperably engageable with a retaining member, one of the position holder and the retaining member being connected to the sleeve member, and the other of the position holder and the retaining member being connected to the body member.