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A fluid flow control device (60) for use in a wellbore to control the inflow of production fluids comprises a sand control screen (62) having a base pipe (64) with a first set of openings (66) that allows the production fluids to flow therethrough and a sleeve (74) coaxially disposed adjacent to the

A fluid flow control device (60) for use in a wellbore to control the inflow of production fluids comprises a sand control screen (62) having a base pipe (64) with a first set of openings (66) that allows the production fluids to flow therethrough and a sleeve (74) coaxially disposed adjacent to the base pipe (64). The sleeve (74) has a second set of openings (76) that allows the production fluids to flow therethrough. The sleeve (74) is selectively positionable relative to the base pipe (64) such that a pressure drop in the production fluids is selectively controllable by adjusting an alignment of the first set of openings (66) relative to the second set of openings ( 76).

대표청구항 ▼

What is claimed is: 1. A fluid flow control device for use in a wellbore to control the inflow of production fluids comprising: a sand control screen having a base pipe with a first set of openings that allows the production fluids to flow therethrough; and a sleeve coaxially disposed adjacent to t

What is claimed is: 1. A fluid flow control device for use in a wellbore to control the inflow of production fluids comprising: a sand control screen having a base pipe with a first set of openings that allows the production fluids to flow therethrough; and a sleeve coaxially disposed adjacent to the base pipe forming an annulus therebetween, the sleeve having a second set of openings that allows the production fluids to flow therethrough, the sleeve selectively positionable relative to the base pipe such that a pressure drop in the production fluids is selectively controllable by adjusting an alignment of the first set of openings relative to the second set of openings, thereby adjusting the distance the production fluids must travel in the annulus which alters the pressure drop in the production fluids traveling within the annulus. 2. The fluid flow control device as recited in claim 1 wherein the sleeve is axially selectively positionable relative to the base pipe to adjust the alignment of the first set of openings relative to the second set of openings. 3. The fluid flow control device as recited in claim 1 wherein the sleeve is rotatably selectively positionable relative to the base pipe to adjust the alignment of the first set of openings relative to the second set of openings. 4. The fluid flow control device as recited in claim 1 wherein the sleeve is axially and rotatably selectively positionable relative to the base pipe to adjust the alignment of the first set of openings relative to the second set of openings. 5. The fluid flow control device as recited in claim 1 wherein the first set of openings has substantially the same geometry as the second set of openings. 6. The fluid flow control device as recited in claim 1 wherein the first set of openings has a different geometry than the second set of openings. 7. The fluid flow control device as recited in claim 1 wherein the fluid flow control device has a fully open position wherein the pressure drop in the production fluids traveling through the first set of openings and the second set of openings is at a minimum. 8. The fluid flow control device as recited in claim 1 wherein the sleeve is selectively positlonable relative to the base pipe using hydraulic pressure. 9. The fluid flow control device as recited in claim 1 wherein the fluid flow control device has a fully closed position wherein the flow of the production fluids therethrough is prevented. 10. The fluid flow control device as recited in claim 1 wherein the fluid flow control device is adjustable between fully opened and fully closed positions. 11. The fluid flow control device as recited in claim 1 wherein the sleeve is selectively positionable relative to the base pipe using a mechanical shifting tool. 12. The fluid flow control device as recited in claim 1 wherein the sleeve is selectively positionable relative to the base pipe using a mechanical shifting tool. 13. The fluid flow control device as recited in claim 1 further comprising a first pressure sensor exteriorly positioned relative to the fluid flow control device and a second pressure sensor interiorly positioned relative to the fluid flow control device that are used to determine the pressure drop in the production fluids. 14. The fluid flow control device as recited in claim 13 further comprising a control circuit that provides signals to control the relative position of the sleeve and the base pipe based upon the determined pressure drop in the production fluids. 15. The fluid flow control device as recited in claim 1 wherein the sleeve is coaxially disposed interiorly of the base pipe. 16. The fluid flow control device as recited in claim 1 wherein the sleeve is coaxially disposed exteriorly of the base pipe. 17. A method for controlling the inflow of production fluids into a production conduit within a wellbore comprising the steps of: providing the production conduit including a sand control screen having a base pipe with a first set of openings and a sleeve coaxially disposed adjacent to the base pipe forming an annulus with the base pipe and having a second set of openings; installing the production conduit within the wellbore; producing the production fluids into the production conduit through the first set of openings of the base pipe, the annulus and the second set of openings of the sleeve; and selectively positioning the sleeve relative to the base pipe such that a pressure drop in the production fluids is controlled by adjusting the alignment of the first set of openings relative to the second set of openings, thereby adjusting the distance the production fluids must travel in the annulus which alters the pressure drop in the production fluids traveling within the annulus. 18. The method as recited in claim 17 wherein the step of selectively positioning the sleeve relative to the base pipe further comprises axially adjusting the sleeve relative to the base pipe. 19. The method as recited in claim 17 wherein the step of selectively positioning the sleeve relative to the base pipe further comprises rotatably adjusting the sleeve relative to the base pipe. 20. The method as recited in claim 17 wherein the step of selectively positioning the sleeve relative to the base pipe further comprises axially and rotatably adjusting the sleeve relative to the base pipe. 21. The method as recited in claim 17 wherein the step of selectively positioning the sleeve relative to the base pipe further comprises adjusting the sleeve relative to the base pipe such that the pressure drop in the production fluids traveling through the first set of openings, the annulus and the second set of openings is at a minimum. 22. The method as recited in claim 17 wherein the step of selectively positioning the sleeve relative to the base pipe further comprises adjusting the sleeve relative to the base pipe such that the pressure drop in the production fluids traveling through the first set of openings, the annulus and the second set of openings is between a minimum and a maximum pressure drop. 23. The method as recited in claim 17 wherein the step of selectively positioning the sleeve relative to the base pipe further comprises adjusting the sleeve relative to the base pipe using hydraulic pressure. 24. The method as recited in claim 17 wherein the step of selectively positioning the sleeve relative to the base pipe further comprises adjusting the sleeve relative to the base pipe such that the flow of the production fluids therethrough is prevented. 25. The method as recited in claim 17 wherein the step of selectively positioning the sleeve relative to the base pipe further comprises adjusting the sleeve relative to the base pipe using a mechanical shifting tool. 26. The method as recited in claim 1 wherein the step of selectively positioning the sleeve relative to the base pipe further comprises adjusting the sleeve relative to the base pipe using an electrically operated device. 27. The method as recited in claim 17 further comprising the step of measuring the pressure exteriorly of the production conduit and the pressure interiorly of the production conduit to determine the pressure drop in the production fluids. 28. The method as recited in claim 27 further comprising the steps of providing signals from a control circuit to control the relative position of the sleeve and the base pipe based upon the determined pressure drop in the production fluids. 29. A fluid flow control device for controlling the flow of a fluid therethrough comprising: a first tubular member having a plurality of entry openings in a side wall thereof that allow the flow of the fluid therethrough; a filter medium positioned exteriorly of the first tubular; and a second tubular member coaxially disposed within the first tubular member forming an annulus therebetween, the second tubular member having a plurality of exit openings in a side wall thereof that allow the flow of the fluid therethrough, the second tubular member rotatably selectively positionable relative to the first tubular member to adjust the alignment of the entry openings relative to the exit openings such that a pressure drop in the fluid is selectively controllable by adjusting an alignment of the entry openings relative to the exit openings, which adjusts the distance the fluid must travel in the annulus and alters the pressure drop in the production fluids traveling within the annulus. 30. The fluid flow control device as recited in claim 29 wherein the entry openings have substantially the same geometry as exit of openings. 31. The fluid flow control device as recited in claim 29 wherein the entry openings have a different geometry than the exit openings. 32. The fluid flow control device as recited in claim 29 wherein the entry openings have substantially the same shape as the exit openings. 33. The fluid flow control device as recited in claim 29 wherein the entry openings have a different shape than the exit openings. 34. The fluid flow control device as recited in claim 29 wherein the fluid flow control device has a fully open position wherein the pressure drop in the fluid traveling through the entry openings, the annulus and the exit openings is at a minimum. 35. The fluid flow control device as recited in claim 29 wherein at least one of an exterior surface of the second tubular member and an interior surface of the first tubular member is a turbulizer surface. 36. The fluid flow control device as recited in claim 29 wherein the fluid flow control device has a fully closed position wherein the flow of the fluid therethrough is prevented. 37. The fluid flow control device as recited in claim 29 wherein the fluid flow control device is adjustable between fully opened and fully closed positions. 38. The fluid flow control device as recited in claim 29 further comprising a first pressure sensor exteriorly positioned relative to the fluid flow control device and a second pressure sensor interiorly positioned relative to the fluid flow control device that are used to determine the pressure drop in the fluid flowing therethrough. 39. A fluid flow control device for controlling the flow of a fluid therethrough comprising: first tubular member having a plurality of entry openings in a side wall thereof that allow the flow of the fluid therethrough; a filter medium positioned exteriorly of the first tubular; and a second tubular member coaxially disposed within the first tubular member forming an annulus therebetween, the second tubular member having a plurality of exit openings in a side wall thereof that allow the flow of the fluid therethrough, the second tubular member axially and rotatably selectively positionable relative to the first tubular member to adjust the alignment of the entry openings relative to the exit openings such that a pressure drop in the fluid is selectively controllable by adjusting an alignment of the entry openings relative to the exit openings, which adjusts the distance the fluid must travel in the annulus and alters the pressure drop in the production fluids traveling within the annulus. 40. The fluid flow control device as recited in claim 39 wherein the entry openings have substantially the same geometry as exit of openings. 41. The fluid flow control device as recited in claim 39 wherein the entry openings have a different geometry than the exit openings. 42. The fluid flow control device as recited in claim 39 wherein the entry openings have substantially the same shape as the exit openings. 43. The fluid flow control device as recited in claim 39 wherein the entry openings have a different shape than the exit openings. 44. The fluid flow control device as recited in claim 39 wherein the fluid flow control device has a fully open position wherein the pressure drop in the fluid traveling through the entry openings, the annulus and the exit openings is at a minimum. 45. The fluid flow control device as recited in claim 39 wherein at least one of an exterior surface of the second tubular member and an interior surface of the first tubular member is a turbulizer surface. 46. The fluid flow control device as recited in claim 39 wherein the fluid flow control device has a fully closed position wherein the flow of the fluid therethrough is prevented. 47. The fluid flow control device as recited in claim 39 wherein the fluid flow control device is adjustable between fully opened and fully closed positions. 48. The fluid flow control device as recited in claim 39 further comprising a first pressure sensor exteriorly positioned relative to the fluid flow control device and a second pressure sensor interiorly positioned relative to the fluid flow control device that are used to determine the pressure drop in the fluid flowing therethrough. 49. A fluid flow control device for controlling the flow of a fluid therethrough comprising: a first tubular member having a plurality of entry openings in a side wall thereof that allow the flow of the fluid therethrough; a filter medium positioned exteriorly of the first tubular; and a second tubular member coaxially disposed within the first tubular member forming an annulus therebetween, the second tubular member having a plurality of exit openings in a side wall thereof that allow the flow of the fluid therethrough, at least one of an exterior surface of the second tubular member and an interior surface of the first tubular member is a turbulizer surface, the second tubular member selectively positionable relative to the first tubular member such that a pressure drop in the fluid is selectively controllable by adjusting an alignment of the entry openings relative to the exit openings, which adjusts the distance the fluid must travel in the annulus and alters the pressure drop in the production fluids traveling within the annulus. 50. The fluid flow control device as recited in claim 49 wherein the second tubular member is axially selectively positionable relative to the first tubular member to adjust the alignment of the entry openings relative to the exit openings. 51. The fluid flow control device as recited in claim 49 wherein the second tubular member is rotatably selectively positionable relative to the first tubular member to adjust the alignment of the entry openings relative to the exit openings. 52. The fluid flow control device as recited in claim 49 wherein the second tubular member is axially and rotatably selectively positionable relative to the first tubular member to adjust the alignment of the entry openings relative to the exit openings. 53. The fluid flow control device as recited in claim 49 wherein the entry openings have substantially the same geometry as exit of openings. 54. The fluid flow control device as recited in claim 49 wherein the entry openings have a different geometry than the exit openings. 55. The fluid flow control device as recited in claim 49 wherein the entry openings have substantially the same shape as the exit openings. 56. The fluid flow control device as recited in claim 49 wherein the entry openings have a different shape than the exit openings. 57. The fluid flow control device as recited in claim 49 wherein the fluid flow control device has a fully open position wherein the pressure drop in the fluid traveling through the entry openings, the annulus and the exit openings is at a minimum. 58. The fluid flow control device as recited in claim 49 wherein the fluid flow control device has a fully closed position wherein the flow of the fluid therethrough is prevented. 59. The fluid flow control device as recited in claim 49 wherein the fluid flow control device is adjustable between fully opened and fully closed positions. 60. The fluid flow control device as recited in claim 49 further comprising a first pressure sensor exteriorly positioned relative to the fluid flow control device and a second pressure sensor interiorly positioned relative to the fluid flow control device that are used to determine the pressure drop in the fluid flowing therethrough.