IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0344289
(2006-01-31)
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등록번호 |
US-7389823
(2008-06-24)
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발명자
/ 주소 |
- Turley,Rocky A.
- Garcia,Joseph R.
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출원인 / 주소 |
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대리인 / 주소 |
Patterson & Sheridan, LLP
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인용정보 |
피인용 횟수 :
12 인용 특허 :
59 |
초록
A method and apparatus for a bridge plug for isolating portions of a downhole casing is provided comprising a retrievable upper mandrel assembly and a lower mandrel assembly coupled to the upper mandrel assembly, wherein the lower mandrel assembly comprises a drillable material.
대표청구항
▼
The invention claimed is: 1. A bridge plug for isolating portions of a downhole casing comprising: an upper mandrel assembly; a lower mandrel assembly removably coupled to the upper mandrel assembly, wherein the lower mandrel assembly comprises a drillable material and wherein the lower mandrel ass
The invention claimed is: 1. A bridge plug for isolating portions of a downhole casing comprising: an upper mandrel assembly; a lower mandrel assembly removably coupled to the upper mandrel assembly, wherein the lower mandrel assembly comprises a drillable material and wherein the lower mandrel assembly comprises several components formed of a composite material; and an outer selling sleeve, wherein the outer setting sleeve houses a setting tool body and wherein the outer setting is removably coupled to the upper mandrel assembly. 2. The bridge plug of claim 1, wherein a lower end of the upper mandrel assembly is removeably countable to an upper end of the lower mandrel assembly. 3. The bridge plug of claim 1, wherein a lower end of the upper mandrel assembly is coupled to an upper end of the lower mandrel assembly by an emergency release mechanism. 4. The bridge plug of claim 3, wherein the emergency release mechanism is a fracturable shear pin. 5. The bridge plug of claim 1, wherein the lower mandrel assembly comprises: a lower mandrel; an upper slip and cone assembly countable to the lower mandrel; a lower slip and cone assembly countable to the lower mandrel and spaced apart axially from the first slip and cone assembly; a resilient packer element retained between the upper and lower slip and cone assemblies; and a nose shoe formed proximate a lower end of the lower mandrel. 6. The bridge plug of claim 5, wherein the lower mandrel assembly further comprises: a body lock ring housing surrounding an upper end of the lower mandrel and coupled to the upper slip and cone assembly; and a lock ring retained within the housing, wherein the lock ring comprises a plurality of teeth that secure the lower mandrel to a lower end of the upper mandrel assembly. 7. The bridge plug of claim 6, wherein at least one of the lower mandrel, upper and lower slip and cone assemblies, packer element and body lock ring housing comprises a composite material. 8. The bridge plug of claim 1, wherein the setting tool body is couplable to a rod. 9. The bridge plug of claim 8, wherein the setting tool body actuates slips in the lower mandrel assembly. 10. Method for removing a bridge plug from a wellbore, comprising: exerting an upward force on an upper portion of the bridge plug; pulling at least the upper portion of the bridge plug upward and out of the wellbore, wherein the upper portion includes a setting tool body housed within a sleeve; and milling at least a portion of the bridge plug that remains in the wellbore. 11. The method of claim 10, wherein the upper portion of the bridge plug may be separated from a lower portion of the bridge plug by disconnecting the upper portion from the lower portion of the bridge plug. 12. The method of claim 11, wherein the disconnecting is accomplished by exerting sufficient force to break a shear pin connecting the upper and lower portions of the bridge plug. 13. A bridge plug assembly comprising: a bridge having: an upper portion; and a lower portion coupled to the upper portion, wherein the lower portion comprises one or more components made of a composite drillable material and wherein the upper portion is releasable from the lower portion at a predetermined force; and a setting sleeve adapted to activate the bridge plug and is releasably connected to the bridge plug. 14. The bridge plug assembly from claim 13, further comprising: a connector formed on the setting sleeve, for connection to a downhole tool; a selection tool housed within the upper portion; and an upper mandrel housed within the selection tool. 15. The bridge plug assembly from claim 14, further comprising: a first radial port in the upper mandrel; a second radial port in the selection tool; an annular, sinuous groove on an outer circumference of the upper portion; and a selection tool lug extending radially inward from the selection tool into the sinuous groove, wherein vertical movement of the selection tool lug in the annular, sinuous groove rotates the first and second radial ports relative to each other. 16. The bridge plug assembly from claim 13, wherein the lower portion comprises: a lower mandrel; an upper slip and cone assembly coupled to the lower mandrel; a lower slip and cone assembly coupled to the lower mandrel and spaced apart axially from the upper slip and cone assembly; one or more resilient packer elements retained between the upper and lower slip and cone assemblies; and a nose shoe formed proximate a lower end of the lower mandrel. 17. The bridge plug assembly from claim 13, wherein the upper portion is coupled to the lower portion using a shearable connection adapted to shear at the predetermined force. 18. A method for setting and removing a bridge plug from a wellbore, comprising: setting the bridge plug using a setting sleeve releasably connected to the bridge plug; releasing the setting sleeve by exerting a first upward force on an upper portion of the setting sleeve; exerting a second upward force on an upper portion of the bridge plug after removing the setting sleeve; pulling at least the upper portion of the bridge plug upward and out of the wellbore; and removing at least a portion of the bridge plug that remains in the wellbore. 19. The method of claim 18, wherein the second upward force separates the upper portion of the bridge plug from a lower portion of the bridge plug. 20. The method of claim 19, wherein the first upward force is less than the second upward force. 21. The method of claim 18, wherein removing at least a portion of the bridge plug comprises milling at least a portion of the bridge plug. 22. The method of claim 18, wherein removing at least a portion of the bridge plug comprises drilling at least the portion of the bridge plug. 23. A bridge plug for isolating portions of a downhole casing comprising: an outer setting sleeve, wherein the outer setting sleeve houses a setting tool body; an upper mandrel assembly having: a connector formed on the outer setting sleeve for connection to a downhole tool; a selection tool; and an upper mandrel housed within the selection tool.; and a lower mandrel assembly couplable to the upper mandrel assembly, wherein the lower mandrel assembly comprises a drillable material. 24. The bridge plug of claim 23, wherein the upper mandrel assembly further comprises: a first radial port in the upper mandrel, formed proximate a lower end of the upper mandrel assembly; a second radial port in the selection tool, formed proximate a lower end of the upper mandrel assembly; an annular, sinuous groove on an outer circumference of the upper mandrel; and a selection tool lug extending radially inward from the selection tool into said groove, wherein vertical movement of the selection tool lug in the annular, sinuous groove rotates the first and second radial ports relative to each other. 25. A bridge plug for isolating portions of a downhole casing comprising: an upper mandrel assembly; a lower mandrel assembly couplable to the upper mandrel assembly, wherein the lower mandrel assembly comprises: one or more components made from a drillable composite material; a lower mandrel; an upper slip and cone assembly couplable to the lower mandrel; a lower slip and cone assembly couplable to the lower mandrel and spaced apart axially from the first slip and cone assembly; a resilient packer element retained between the upper and lower slip and cone assemblies; and a nose shoe formed proximate a lower end of the lower mandrel; and an outer setting sleeve, wherein the outer setting sleeve houses a setting tool body. 26. The bridge plug of claim 25, wherein the lower mandrel assembly further comprises: a body lock ring housing surrounding an upper end of the lower mandrel and coupled to the upper slip and cone assembly; and a lock ring retained within the housing, wherein the lock ring comprises a plurality of teeth that secure the lower mandrel to a lower end of the upper mandrel assembly. 27. The bridge plug of claim 26, wherein at least one of the lower mandrel, upper and lower slip and cone assemblies, packer element and body lock ring housing comprises a composite material. 28. A bridge plug for isolating portions of a downhole casing comprising: an outer setting sleeve, wherein the outer setting sleeve houses a setting tool body; an upper mandrel assembly having: a connector formed on an upper end of the setting sleeve, for connection to a down hole tool; and a selection tool proximate the setting tool body; and a lower mandrel assembly couplable to the upper mandrel assembly, wherein the lower mandrel assembly comprises a drillable material. 29. The bridge plug of claim 28, wherein the selection tool comprises: a first end terminating in a fishing neck; a second end terminating in a downward-facing plunger; and a radial port formed proximate the second end. 30. A bridge plug for isolating portions of a downhole casing comprising: an upper mandrel assembly, wherein a lower end of the upper mandrel assembly is coupled to an upper end of the lower mandrel assembly by an emergency release mechanism wherein the emergency release mechanism is a fracturable shear pin; a lower mandrel assembly removably coupled to the upper mandrel assembly, wherein the lower mandrel assembly comprises a drillable material; and an outer setting sleeve, wherein the outer setting sleeve houses a setting tool body and wherein the outer setting sleeve is removably coupled to the upper mandrel assembly. 31. A bridge plug for isolating portions of a downhole casing comprising: an upper mandrel assembly comprising: a connector formed on the outer setting sleeve, for connection to a downhole tool; a selection tool; and an upper mandrel housed within the selection tool; a lower mandrel assembly removably coupled to the upper mandrel assembly, wherein the lower mandrel assembly comprises a drillable material; and an outer setting sleeve, wherein the outer setting sleeve houses a setting tool body and wherein the outer setting sleeve is removably coupled to the upper mandrel assembly. 32. The bridge plug of claim 31, wherein the upper mandrel assembly further comprises: a first radial port in the upper mandrel, formed proximate a lower end of the upper mandrel assembly; a second radial port in the selection tool, formed proximate a lower end of the upper mandrel assembly; an annular, sinuous groove on an outer circumference of the upper mandrel; and a selection tool lug extending radially inward from the selection tool into said groove, wherein vertical movement of the selection tool lug in the annular, sinuous groove rotates the first and second radial ports relative to each other. 33. A bridge plug for isolating portions of a downhole casing comprising: an upper mandrel assembly comprising: a connector formed on an upper end of the setting sleeve, for connection to a downhole tool; and a selection tool proximate the setting tool body; a lower mandrel assembly removably coupled to the upper mandrel assembly, wherein the lower mandrel assembly comprises a drillable material; and an outer setting sleeve, wherein the outer setting sleeve houses a setting tool body and wherein the outer setting sleeve is removably coupled to the upper mandrel assembly. 34. The bridge plug of claim 33, wherein the selection tool comprises: a first end terminating in a fishing neck; a second end terminating in a downward-facing plunger; and a radial port formed proximate the second end. 35. The bridge plug of claim 34, wherein the lower mandrel assembly comprises: a lower mandrel; an upper slip and cone assembly coupled to the lower mandrel; a lower slip and cone assembly coupled to the lower mandrel and spaced apart axially from the first slip and cone assembly; and at least one resilient packer element retained between the upper and lower slip and cone assemblies. 36. The bridge plug of claim 35, wherein the lower mandrel comprises: a first end terminating in a recess; a second end terminating in a nose shoe a body lock ring housing surrounding a portion of the lower mandrel and coupled to the upper slip and cone assembly; a lock ring retained within the housing; and a fluid conduit defined at least partially through an interior of the lower mandrel, wherein the lock ring comprises a plurality of teeth that secure the lower mandrel to a lower end of the upper mandrel assembly. 37. The bridge plug of claim 36, wherein engagement of the selection tool plunger with the recess in the lower mandrel controls a fluid flow from the lower mandrel assembly to the upper mandrel assembly. 38. The bridge plug of claim 35, wherein at least one of the lower mandrel, upper and lower slip and cone assemblies, at least one packer element and body lock ring housing comprises a composite material. 39. A bridge plug assembly comprising: a bridge plug having: an upper portion; and a lower portion coupled to the upper portion, wherein the lower portion comprises a drillable material and wherein the upper portion is releasable from the lower portion at a predetermined force; and a setting sleeve adapted to activate the bridge plug and is releasably connected to the bridge plug and wherein the upper portion is coupled to the lower portion using a shearable connection adapted to shear at the predetermined force. 40. A bridge plug for isolating portions of a downhole casing comprising: an upper mandrel assembly; a lower mandrel assembly couplable to the upper mandrel assembly, wherein the lower mandrel assembly comprises: a drillable material; a lower mandrel; an upper slip and cone assembly couplable to the lower mandrel; a lower slip and cone assembly couplable to the lower mandrel and spaced apart axially from the first slip and cone assembly; a resilient packer element retained between the upper and lower slip and cone assemblies; and a nose shoe formed proximate a lower end of the lower mandrel a body lock ring housing surrounding an upper end of the lower mandrel and coupled to the upper slip and cone assembly; and a lock ring retained within the housing, wherein the lock ring comprises a plurality of teeth that secure the lower mandrel to a lower end of the upper mandrel assembly; and an outer setting sleeve, wherein the outer setting sleeve houses a setting tool body.
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