초록 ▼

A system and method for controlling inflow of fluid into a production string. In aspects, the invention provides a downhole sand screen and inflow control device with a gas or water shut-off feature that can be operated mechanically or hydraulically from the surface of the well. The device also pref

A system and method for controlling inflow of fluid into a production string. In aspects, the invention provides a downhole sand screen and inflow control device with a gas or water shut-off feature that can be operated mechanically or hydraulically from the surface of the well. The device also preferably includes a bypass feature that allows the inflow control device to be closed or bypassed via shifting of a sleeve. In embodiments, the flow control device can be adaptive to changes in wellbore conditions such as chemical make-up, fluid density and temperature. Exemplary adaptive inflow control devices include devices configured to control flow in response to changes in gas/oil ratio, water/oil ratio, fluid density and/or the operating temperature of the inflow control device. In other aspects of the present invention, inflow control devices are utilized to control the flow of commingled fluids drained via two or more wellbores.

대표청구항 ▼

What is claimed is: 1. An apparatus for controlling a flow of one or more fluids from a subterranean formation into a production string positioned in a wellbore, comprising: a flow control device having a flowspace providing fluid communication between the subterranean formation and a bore of the p

What is claimed is: 1. An apparatus for controlling a flow of one or more fluids from a subterranean formation into a production string positioned in a wellbore, comprising: a flow control device having a flowspace providing fluid communication between the subterranean formation and a bore of the production string; and a valve member rotating to selectively restrict flow of fluid through the flowspace, the valve member being responsive to the density of the fluid flowing through the flowspace. 2. The apparatus of claim 1 further comprising a sand screen for removal of solids from fluid entering the production string. 3. The apparatus of claim 1 further comprising a flow aperture formed in the flow control device to couple the flowspace to the bore of the production string, wherein the valve member selectively blocks the flow arerture. 4. The apparatus of claim 1 wherein the valve member unblocks the flow aperture upon operation of an actuation arm. 5. The apparatus of claim 1 wherein the flowspace comprises a first fluid passageway and a second fluid passageway; and wherein the valve member rotates to align the first and second fluid passageways. 6. The apparatus of claim 1 further comprising a tortuous path defined within the flowspace for control of fluid flow rate through the flowspace. 7. The apparatus of claim 6 further comprising a selectively openable bypass port for allowing fluid to bypass the tortuous path. 8. The apparatus of claim 1 wherein the valve member unblocks the flow aperture upon operation of a hydraulic mechanism. 9. A method of selectively controlling fluid flow into a subterranean production string, comprising: providing fluid communication between the subterranean formation and a bore of the production string via a flowspace formed in a flow control device; and selectively restricting flow of fluid through the flowspace using a valve member that rotates in response to the density of the fluid flowing through the flowspace. 10. The method of claim 9 further comprising removing solids from fluid entering the production string with a sand screen. 11. The method of claim 9 further comprising selectively blocking a flow aperture formed in the flow control device to couple the flowspace to the bore of the production string. 12. The method of claim 9 wherein the flowspace comprises a first fluid passageway and a second fluid passageway; and wherein the valve member rotates to align the first and second fluid passageways. 13. The method of claim 9 further comprising forming a tortuous path in the flowspace for control of fluid flow rate through the flowspace. 14. The method of claim 9 further comprising actuating the flow control device by one of (i) manual operation, and (ii) automatic operation. 15. An apparatus for controlling a flow of one or more fluids from a subterranean formation into a production string positioned in a wellbore, comprising: a flow control device having a flowspace providing fluid communication between the subterranean formation and a bore of the production string; and a valve member rotating to selectively restrict flow of fluid through the flowspace, the valve member being responsive to a change in density of the fluid flowing through the flowspace. 16. The apparatus of claim 15 further comprising a flow aperture formed in the flow control device to couple the flowspace to the bore of the production string, wherein the valve member selectively blocks the flow aperture. 17. The apparatus of claim 15 wherein the flowspace comprises a first fluid passageway and a second fluid passageway; and wherein the valve member rotates to align the first and second fluid passageways. 18. The apparatus of claim 15 further comprising a tortuous path defined within the flowspace for control of fluid flow rate through the flowspace. 19. A method of selectively controlling fluid flow into a subterranean production string, comprising: providing fluid communication between the subterranean formation and a bore of the production string via a flowspace formed in a flow control device; and selectively restricting flow of fluid through the flowspace using a valve member that rotates in response to the density of the fluid flowing through the flowspace. 20. The method of claim 19 further comprising coupling: the flowspace to the bore of the production string with a flow aperture; and selectively blocking the flow aperture. 21. The method of claim 19 wherein the flowspace comprises a first fluid passageway and a second fluid passageway; and further comprising selectively aligning the first and second fluid passageways by rotating the valve member. 22. The method of claim 19 further comprising forming a tortuous path in the flowspace for control of fluid flow rate through the flowspace.