초록 ▼

A sand control screen assembly (40) and method for treating formations traversed by a wellbore (34) in a single trip are disclosed. The sand control screen assembly (40) includes a base pipe (56) with a plurality of openings (58) that allow fluid flow therethrough. A filter medium (62) is positioned

A sand control screen assembly (40) and method for treating formations traversed by a wellbore (34) in a single trip are disclosed. The sand control screen assembly (40) includes a base pipe (56) with a plurality of openings (58) that allow fluid flow therethrough. A filter medium (62) is positioned about the exterior of the base pipe (56) to filter particulate matter out of the production fluids. One-way valves (70) are operably associated within the openings (58) of the base pipe (56) to prevent fluid flow from the interior of the base pipe (56) to the exterior of the base pipe (56) during a treatment process. The one-way valves (70), however, are actuatable to allow fluid flow from the exterior of the base pipe (56) to the interior of the base pipe (56) to allow production of fluids from the formation (14).

대표청구항 ▼

1. A sand control screen assembly positionable within a production interval comprising:a base pipe having at least one opening that allows fluid flow therethrough; a filter medium positioned about the exterior of the base pipe, the filter medium selectively allowing fluid flow therethrough and preve

1. A sand control screen assembly positionable within a production interval comprising:a base pipe having at least one opening that allows fluid flow therethrough; a filter medium positioned about the exterior of the base pipe, the filter medium selectively allowing fluid flow therethrough and preventing particulate flow therethrough; and a one-way valve operably associated with the base pipe that controls fluid flow through the opening of the base pipe. 2. The sand control screen assembly as recited in claim 1 wherein the one-way valve prevents fluid flow from the interior of the base pipe to the exterior of the filter medium and is actuatable to allow fluid flow from the exterior of the filter medium to the interior of the base pipe.3. The sand control screen assembly as recited in claim 2 wherein the base pipe includes a plurality of openings and wherein the one-way valve further comprises a plurality of one-way valves each disposed at least partially within one of the openings of the base pipe, the one-way valves prevent fluid flow from the interior of the base pipe to the exterior of the filter medium and are actuatable to allow fluid flow from the exterior of the filter medium to the interior of the base pipe.4. The sand control screen assembly as recited in claim 3 wherein the one-way valves are flush mounted within the openings of the base pipe.5. The sand control screen assembly as recited in claim 3 wherein the one-way valves extend partially inwardly into the base pipe.6. The sand control screen assembly as recited in claim 5 wherein the one-way valves reduce the inner diameter of the base pipe by no more than about thirty percent.7. The sand control screen assembly as recited in claim 5 wherein the one-way valve reduce the inner diameter of the base pipe by between about ten percent and about thirty percent.8. The sand control screen assembly as recited in claim 3 wherein the one-way valves extend partially outwardly from the base pipe.9. The sand control screen assembly as recited in claim 8 wherein the one-way valves increase the outer diameter of the base pipe by no more than about thirty percent.10. The sand control screen assembly as recited in claim 8 wherein the one-way valves increase the outer diameter of the base pipe by between about ten percent and about thirty percent.11. The sand control screen assembly as recited in claim 3 wherein the one-way valves are ball and seat type one-way valves.12. The sand control screen assembly as recited in claim 1 wherein the one-way valve is selectively operable to a disabled configuration such that fluid flow from the interior of the base pipe to the exterior of the filter medium is enabled.13. The sand control screen assembly as recited in claim 1 wherein the one-way valve further comprises a sliding sleeve and a spring.14. The sand control screen assembly as recited in claim 1 wherein the one-way valve further comprises at least one piston and at least one spring.15. A sand control screen assembly positionable within a production interval of a wellbore comprising:a base pipe having a plurality of openings that allow fluid flow therethrough; a filter medium positioned about the exterior of the base pipe, the filter medium selectively allowing fluid flow therethrough and preventing particulate flow therethrough; and a plurality of one-way valves positioned at least partially within the openings of the base pipe, the one-way valves having a first operating mode wherein the one-way valves prevent fluid flow from the interior of the base pipe to the exterior of the base pipe and are actuatable to allow fluid flow from the exterior of the base pipe to the interior of the base pipe and a second operating mode wherein the one-way valves allow fluid flow from the interior of the base pipe to the exterior of the base pipe and from the exterior of the base pipe to the interior of the base pipe. 16. The sand control screen assembly as recited in claim 15 wherein the one-way valves are flush mounted within the openings of the base pipe.17. The sand control screen assembly as recited in claim 15 wherein the one-way valves extend partially inwardly into the base pipe.18. The sand control screen assembly as recited in claim 17 wherein the one-way valves reduce the inner diameter of the base pipe by no more than about thirty percent.19. The sand control screen assembly as recited in claim 17 wherein the one-way valves reduce the inner diameter of the base pipe by between about ten percent and about thirty percent.20. The sand control screen assembly as recited in claim 15 wherein the one-way valves extend partially outwardly from the base pipe.21. The sand control screen assembly as recited in claim 20 wherein the one-way valves increase the outer diameter of the base pipe by no more than about thirty percent.22. The sand control screen assembly as recited in claim 20 wherein the one-way valves increase the outer diameter of the base pipe by between about ten percent and about thirty percent.23. The sand control screen assembly as recited in claim 15 wherein the one-way valves are ball and seat type one-way valves.24. The sand control screen assembly as recited in claim 15 wherein the one-way valves are operated from the first operating mode to the second operating mode in response to a preselected differential pressure.25. A said control screen assembly positionable within a production interval of a wellbore comprising:a base pipe having at least one opening that allows fluid flow therethrough; a filter medium positioned about an exterior of the base pipe, the filter medium selectively allowing fluid flow therethrough and preventing particulate flow therethrough; and a one-way valve positioned in a fluid flow path between the filter medium and the at least one opening in the base pipe that prevents fluid flow from an interior of the base pipe to an exterior of the filter medium and is actuatable to allow fluid flow from the exterior of the filter medium to the interior of the base pipe. 26. The sand control screen assembly as recited in claim 25 wherein the one-way valve further comprises a sliding sleeve and a spring.27. The sand control screen assembly as recited in claim 25 wherein the one-way valve further comprises at least one piston and at least one spring.28. The sand control screen assembly as recited in claim 25 wherein the one-way valve is selectively operable to a disabled configuration such that fluid flow from the interior of the base pipe to the exterior of the filter medium is enabled.29. The sand control screen assembly as recited in claim 25 wherein the one-way valve is positioned to the exterior of the base pipe.30. A sand control screen assembly comprising:a tubular member having at least one fluid passageway in a sidewall section thereof; a filter medium positioned exteriorly around the tubular member defining a first annular region with the tubular member; a housing positioned exteriorly around the tubular member defining a second annular region with the tubular member; and a sleeve slidably positioned within the second annular region, the sleeve having a sealing position and a nonsealing position, the sleeve mechanically biased toward the sealing position, the sleeve operated to the sealing position when a force generated by differential pressure acting on the sleeve between an exterior of the filter medium and an interior of the base pipe does not exceed the mechanical bias force, thereby preventing fluid flow from the interior of the bane pipe to the exterior of the filter medium, the sleeve operated to the nonsealing position when the force generated by differential pressure acting on the sleeve between the exterior of the filter medium and the interior of the base pipe exceeds the mechanical bias farce, thereby allowing fluid flow from the exterior of the filter medium to the interior of the base pipe. 31. The sand control screen assembly as recited in claim 30 wherein the sleeve further comprises and annular sleeve.32. The sand control screen assembly as recited in claim 30 wherein the sleeve further comprises a non-annular sleeve.33. The sand control screen assembly as recited in claim 30 wherein the mechanical bias force is generated by a spring.34. A downhole treatment method comprising the steps of:locating a sand control screen assembly within a production interval of a wellbore, the sand control screen assembly including a base pipe having at least one opening and a filter medium positioned about an exterior of the base pipe; pumping a treatment fluid into the production interval; and preventing fluid flow from an interior to an exterior of the sand control screen assembly with at least one one-way operably associated with the base pipe that controls fluid flow through the at least one opening of the base pipe. 35. The method as recited in claim 34 wherein the at least one opening further comprises a plurality of openings and the at least one one-way valve further comprises a plurality of one-way valves and wherein the step of preventing fluid flow from the interior to the exterior of the sand control screen assembly further comprises positioning one of the one-way valves at least partially within each of the openings of the base pipe.36. The method as recited in claim 35 wherein the step of positioning one of the one-way valves at least partially within each of the openings of the base pipe further comprises flush mounting the one-way valves within the openings of the base pipe.37. The method as recited in claim 35 wherein the step of positioning one of the one-way valves at least partially within each of the openings of the base pipe further comprises extending the one-way valves partially inwardly into the base pipe.38. The method as recited in claim 35 wherein the step of positioning one of the one-way valves at least partially within each of the openings of the base pipe further comprises extending the one-way valves partially outwardly from the base pipe.39. The method as recited in claim 35 further comprising selectively operating the one-way valves to a disabled configuration allowing fluid flow from the interior of the sand control screen assembly to the exterior of the sand control screen assembly.40. The method as recited in claim 34 further comprising the step of allowing fluid flow from the exterior of the sand control screen assembly to the interior of the sand control screen assembly through the at least one one-way valve.41. The method as recited in claim 34 further comprising the step of continuing to prevent fluid flow from the interior to the exterior of the sand control screen assembly after terminating the pumping of the treatment fluid into the production interval.42. The method as recited in claim 34 wherein the step of preventing fluid flow from the interior to the exterior of the sand control screen assembly further comprises positioning the at least one one-way valve in a fluid path between the filter medium and the opening of the base pipe.43. The method as recited in claim 42 wherein the step of positioning the at least one one-way valve in a fluid path between the filter medium and the opening of the base pipe further comprises positioning a sliding sleeve in the fluid path between the filter medium and the opening of the base pipe.44. The method as recited in claim 42 wherein the step of positioning the at least one one-way valve in a fluid path between the filter medium and the opening of the base pipe further comprises positioning at least one piston in the fluid path between the filter medium and the opening of the base pipe.45. The method as recited in claim 42 further comprising selectively operating the at least one one-way valve to a disabled configuration allowing fluid flow from the interior of the sand control screen assembly to the exterior of the sand control screen assembly.46. A downhole treatment method comprising the steps of:locating a sand control screen assembly within a production interval of a wellbore, the sand control screen assembly including a base pipe having at least one opening and a filter medium positioned about an exterior of the base pipe; preventing fluid flow from the interior to the exterior of the sand control screen assembly by positioning at least one one-way valve in a fluid path between the exterior and the interior of the sand control screen; pumping a treatment fluid into the production interval; allowing fluid flow from the exterior to the interior of the sand control screen assembly through the one-way valve; and selectively operating the one-way valve to a disabled configuration allowing fluid flow from the interior of the sand control screen assembly to the exterior of the sand control screen assembly. 47. The method as recited in claim 46 wherein the step of positioning at least one one-way valve in a fluid path between the exterior and the interior of the sand control screen further comprises positioning the one-way valve to the exterior of the base pipe.48. The method as recited in claim 46 wherein the step of selectively operating the one-way valve to a disabled configuration further comprises exposing the one-way valve to a differential pressure above a preselected level.49. The method as recited in claim 46 wherein the step of positioning at least one one-way valve in a fluid path between the exterior and the interior of the sand control screen further comprises positioning the one-way valve at least partially within the opening of the base pipe.50. The method as recited in claim 49 wherein the step of positioning at least one one-way valve in a fluid path between the exterior and the interior of the sand control screen further comprise: extending the one-way valve partially inwardly into the base pipe.51. The method as recited in claim 49 wherein the step of positioning at least one one-way valve in a fluid path between the exterior and the interior of the sand control screen further comprises extending the one-way valve partially outwardly from the base pipe.