A system for completing a well with multiple zones of production includes a casing having a plurality of valves that are integrated therein for isolating each well zone. Communication is established between each underlying formation and the interior of the casing, and a treatment fluid is delivered
A system for completing a well with multiple zones of production includes a casing having a plurality of valves that are integrated therein for isolating each well zone. Communication is established between each underlying formation and the interior of the casing, and a treatment fluid is delivered to each of the multiple well zones. Mechanisms for actuating one or more of the valves include, but are not limited to, a dart, a drop ball, a running tool, and a control line actuating system.
대표청구항▼
What is claimed is: 1. A system for use in a wellbore having a plurality of well zones, comprising: a casing deployed in the wellbore; and a plurality of valves connected to the casing, each valve for establishing communication between the casing and a well zone; wherein the casing is fixed to the
What is claimed is: 1. A system for use in a wellbore having a plurality of well zones, comprising: a casing deployed in the wellbore; and a plurality of valves connected to the casing, each valve for establishing communication between the casing and a well zone; wherein the casing is fixed to the wellbore by cement, wherein at least one of the valves comprises a filter moveable between a filtering position at which the filter is aligned with at least one port of the valve and another position in which the filter is not aligned with said at least one port. 2. The system of claim 1, wherein each valve comprises: a housing having an axial bore therein, the housing having at least one port formed therein for establishing communication between the axial bore of the housing and a well zone; and a sliding sleeve arranged within the housing, the sleeve moveable between an open port position wherein a flowpath exists between the axial bore of the housing and a well zone and a closed port position wherein the flowpath is interrupted. 3. The system of claim 2, wherein the sliding sleeve comprises: at least one port formed therein, the at least one port of the sleeve being aligned with the at least one port of the housing when the sleeve is in the open port position and the at least one port of the sleeve being misaligned with the at least one port of the housing when the sleeve is in the closed port position. 4. The system of claim 1, further comprising: a drop ball having a predetermined diameter; and a seat connected to the sleeve, the seat having an axial bore therethrough, the axial bore of the seat having a diameter smaller than the diameter of the drop ball, wherein the drop ball is adapted to engage the seat to shift the sliding sleeve between the open port position and the closed port position. 5. The system of claim 1, further comprising: an expandable element formed around each port of the housing, the expandable clement adapted to prevent cement from entering the port when activated. 6. The system on claim 5, wherein the expandable element is selected from a group consisting of swellable rubber, swellable hydrogel, and swellable elastomer blend. 7. The system of claim 1, wherein the filter comprises a sand or proppant control filter. 8. A system for use in a wellbore having a well zone, comprising: a casing deployed in the wellbore, the casing having an axial bore therein; and a valve connected to the casing for establishing communication between the casing and the well zone, the valve moveable between an open position wherein a flowpath exists between the axial bore of the casing and the well zone and a closed port position wherein the flowpath is interrupted, wherein the casing is fixed to the wellbore by cement, the valve has a selectable filtering position to filter fluid communicated from the well zone, and the valve is adapted to, in the selectable filtering position, filter sand or proppant from the fluid communicated from the well zone. 9. The system of claim 8, further comprising: a drop ball adapted to actuate the valve between the open position and the closed position.
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