초록 ▼

Tubing rotator 10 includes a main body or rotator spool 20 , a selected bottom connector 50 , and a selected top connector 70 . The bottom connector 50 may be adapted for a screw cap type wellhead or a flanged wellhead. The top connector may comprise a pin connection mandrel 72 with either a threade

Tubing rotator 10 includes a main body or rotator spool 20 , a selected bottom connector 50 , and a selected top connector 70 . The bottom connector 50 may be adapted for a screw cap type wellhead or a flanged wellhead. The top connector may comprise a pin connection mandrel 72 with either a threaded or flanged upper end, or a flow-T and/or BOP housing that bolts to the top of the spool. The tubing rotator may be adapted for hanging the tubing directly from the tubing rotator or may be used with a double box bushing 110 hung within the tubing rotator. The tubing rotator may also use a swivel hanger 120 included in the tubing head.

대표청구항 ▼

1. A tubing rotator for attaching to a wellhead for rotating a tubing string in a well, comprising:a tubing rotator spool housing a drive shaft interconnecting a power source and the tubing string for rotating the tubing string;a retainer sub removably secured to the spool housing;a retainer plate r

1. A tubing rotator for attaching to a wellhead for rotating a tubing string in a well, comprising:a tubing rotator spool housing a drive shaft interconnecting a power source and the tubing string for rotating the tubing string;a retainer sub removably secured to the spool housing;a retainer plate removably secured to the retainer sub;a top connector removably attached at its lower end to an upper end of the rotator spool; anda bottom connector removably attached at its upper end to a lower end of the rotator spool and at its lower end to the wellhead. 2. A tubing rotator as defined in claim 1, further comprising:the retainer sub being threadably secured to the rotator spool and including a plurality of circumferentially spaced ports each for receiving a securing member for rotatably connecting the retainer sub to the rotator spool; andthe retainer plate includes a plurality of circumferentially spaced ports for receiving a securing member to rotatably secure the retainer sub to the retainer plate. 3. A tubing rotator as defined in claim 1, further comprising:a seal between the retainer plate and the wellhead. 4. A tubing rotator as defined in claim 1, wherein the bottom connector is threaded to the rotator spool, the tubing rotator further comprising:a locking mechanism to prevent unthreading of the bottom connector from the rotator spool due to torque imparted to rotate the tubing string; andthe bottom connector includes a plurality of circumferentially spaced holes for receiving the locking mechanism. 5. A tubing rotator as defined in claim 1, further comprising:a double box bushing within the rotator spool for lowering beneath the rotator spool then securing to the rotator spool to set a tension anchor. 6. A tubing rotator as defined in claim 1, wherein the top connector includes a flow-T and BOP. 7. A tubing rotator as defined in claim 1, further comprising:a swivel tubing hanger with a locking fitting to prevent the tubing hanger from swiveling when a lift sub is backed out of the swivel tubing hanger. 8. A tubing rotator as defined in claim 1, wherein the rotator spool comprises:a first set of radially inward ports for connecting a selected top connector with the rotator spool; anda second set of radially outward ports for connecting another selected top connector with the rotator spool. 9. A tubing rotator as defined in claim 8, further comprising:the top connector including a pin connection mandrel with one of a thread and a flange at its upper end for connection with oilfield equipment. 10. A tubing rotator as defined in claim 8, further comprising:the top connector including at least one of a flow-T housing and a BOP housing. 11. A tubing rotator as defined in claim 1, wherein the bottom connector is attached to the wellhead such that the rotator spool and drive shaft may be oriented in a selected direction relative to the wellhead. 12. A tubing rotator for attaching to a wellhead for rotating a tubing string in a well, comprising:a tubing rotator spool housing a drive shaft interconnecting a power source and the tubing string for rotating the tubing string, the rotator spool including a first set of radially inward circumferentially arranged ports aligned for connecting a selected top connector with the rotator spool, and a second set of radially outward circumferentially arranged ports each radially outward from the first set of ports and aligned for connecting another selected top connector with the rotator spool;the top connector removably attached at its lower end to an upper end of the rotator spool; anda bottom connector attached at its upper end to a lower end of the rotator spool and at its lower end to the wellhead. 13. A tubing rotator as defined in claim 12, further comprising:the top connector including a pin connection mandrel with one of a thread and a flange at its upper end for connection with oilfield equipment. 14. A tubing rotator as defined in claim 12, further comprising:the top connector incl uding at least one of a flow-T housing and a BOP housing. 15. A tubing rotator as defined in claim 12, wherein the bottom connector is attached to the wellhead such that the rotator spool and drive shaft may be oriented in a selected direction relative to the wellhead. 16. A tubing rotator as defined in claim 12, wherein the bottom connector is threaded to the rotator spool, the threaded connection including threads which tighten in response to torque imparted to rotate the tubing string to prevent unthreading of the threaded connection. 17. The tubing rotator as defined in claim 12, wherein the bottom connector comprises:a retainer sub threadably secured to the rotator spool and including a plurality of circumferentially spaced ports each for receiving a securing member for rotatably connecting the retainer sub to the rotator spool; anda retainer plate removably secured to the retainer sub and including a plurality of circumferentially spaced ports for receiving a securing member to rotatably secure the retainer sub to the retainer plate. 18. A tubing rotator as defined in claim 12, further comprising:a swivel tubing hanger with a locking fitting to prevent the tubing hanger from swiveling when a lift sub is backed out of the swivel tubing hanger. 19. A tubing rotator as defined in claim 12, further comprising:a double box bushing within the rotator spool for lowering beneath the rotator spool then securing to the rotator spool to set a tension anchor. 20. A tubing rotator for attaching to a wellhead for rotating a tubing string in a well, comprising:a tubing rotator spool housing a drive shaft interconnecting a power source and the tubing string for rotating the tubing string;a top connector positioned above the rotator spool; anda bottom connector attached at its upper end to a lower end of the rotator spool and attached at its lower end to the wellhead, the bottom connector including a retainer sub secured to the spool housing, and a retainer plate removably secured to the retainer sub. 21. A tubing rotator as defined in claim 20, wherein the top connector is integral with the rotator spool. 22. A tubing rotator as defined in claim 20, wherein the top connector is removably connected to the rotator spool. 23. A tubing rotator as defined in claim 20, wherein the retainer sub is integral with the rotator spool. 24. A tubing rotator as defined in claim 20, wherein the retainer sub is movably secured to the rotator spool. 25. A tubing rotator as defined in claim 20, further comprising:the retainer sub being threadably secured to the spool housing and including a plurality of circumferentially spaced ports each for receiving a securing member for rotatably connecting the retainer sub to the spool housing; andthe retainer plate includes a plurality of circumferentially spaced ports for receiving a securing member to rotatably secure the retainer sub to the retainer plate. 26. A tubing rotator as defined in claim 20, further comprising:a seal between the retainer plate and the wellhead. 27. A tubing rotator as defined in claim 20, wherein the bottom connector is threaded to the rotator spool, the tubing rotator further comprising:a locking mechanism to prevent unthreading of the bottom component from the spool due to torque imparted to rotate the tubing string. 28. A tubing rotator as defined in claim 27, wherein the bottom connector includes a plurality of circumferentially spaced holes for receiving the locking mechanism. 29. A tubing rotator as defined in claim 20, wherein the bottom connector is attached to the wellhead such that the rotator spool and drive shaft may be oriented in a selected direction relative to the wellhead. 30. A tubing rotator for attaching to a wellhead for rotating a tubing string in a well, comprising:a tubing rotator spool housing a drive shaft interconnecting a power source and the tubing string for rotating the tubing string;a top connector removably attached at its lower end to an upper end of the rotator spool;a bottom connector removably attached at its upper end to a lower end of the rotator spool and at its lower end to the wellhead;a double box bushing within the rotator spool for lowering beneath the rotator spool then securing to the rotator spool to set a tension anchor;a swivel tubing hanger with a locking fitting to prevent the tubing hanger from swiveling when a lift sub is backed out of the swivel tubing hanger. 31. A tubing rotator as defined in claim 30, further comprising:a first set of radially inward ports for connecting a selected top connector with the rotator spool; anda second set of radially outward ports for connecting another selected top connector with the rotator spool. 32. A tubing rotator as defined in claim 30, further comprising:the top connector including at least one of a flow-T housing and a BOP housing. 33. A tubing rotator as defined in claim 30, further comprising:a retainer sub threadably secured to the rotator spool and including a plurality of circumferentially spaced ports each for receiving a securing member for rotatably connecting the retainer sub to the rotator spool; anda retainer plate removably secured to the retainer sub and including a plurality of circumferentially spaced ports for receiving a securing member to rotatably secure the retainer sub to the retainer plate. 34. A tubing rotator as defined in claim 30, wherein the double box bushing is unthreaded from the rotator spool and rethreaded to the rotator spool after the tension anchor is set.