A method and apparatus for holding and turning a tubular and string of tubulars, such as casing, for make-up and drilling with the tubulars are disclosed. The apparatus generally includes a spear and a clamping head, both of which are mounted to a top drive. The spear and the clamping head can be en
A method and apparatus for holding and turning a tubular and string of tubulars, such as casing, for make-up and drilling with the tubulars are disclosed. The apparatus generally includes a spear and a clamping head, both of which are mounted to a top drive. The spear and the clamping head can be engaged to transmit torque therebetween from the top drive. In addition, an aspect of the invention provides variable height wickers positioned on slips to enable use of the slips with variable inner diameter (ID) and weight casing without deformation or rupture of the casing. Still further, a casing collar is also provided to provide reinforcement to the casing in the area of slip contact with the casing ID.
대표청구항▼
We claim: 1. A method for suspending and turning a tubular using a top drive, comprising: gripping an outside of the tubular with a second gripping member; moving the second gripping member toward a first gripping member to couple the second gripping member to the first gripping member; actuating t
We claim: 1. A method for suspending and turning a tubular using a top drive, comprising: gripping an outside of the tubular with a second gripping member; moving the second gripping member toward a first gripping member to couple the second gripping member to the first gripping member; actuating the first gripping member to engage an inside of the tubular; and rotating the tubular to make up a connection between the tubular and a tubular string. 2. The method of claim 1, wherein the tubular comprises casing. 3. The method of claim 1, further comprising providing a thrust force to the tubular string, the thrust force at least partially transferred to the tubular string through the first gripping member. 4. The method of claim 1, wherein torque is transferred to the tubular string through the second gripping member. 5. The method of claim 1, wherein torque is transferred to the tubular string through the first gripping member. 6. The method of claim 1, further comprising axially moving the second gripping member to compensate for motion of the casing caused by the make-up of the connection. 7. The method of claim 1, further comprising pivoting the second gripping member into alignment with the first gripping member. 8. The method of claim 1, further comprising coupling the second gripping member to the first gripping member such that torque is transferable therebetween. 9. The method of claim 1, wherein the second gripping member is coupled to a swivel. 10. The method of claim 1, wherein the second gripping member comprises an elevator. 11. The method of claim 1, wherein the second gripping member grips and rotates the tubular. 12. The method of claim 1, wherein the second gripping member rotates and supports a weight of the tubular. 13. A system for suspending and turning a tubular string, comprising: a top drive; an internal gripping member driven by the top drive, the internal gripping member comprising a body, one or more slips, and an actuator for engaging the one or more slips with an interior surface of the tubular string; and an external gripping member capable of engaging an outside portion of the tubular string, wherein the external gripping member is selectively movable to couple and decouple from the internal gripping member. 14. The system of claim 13, wherein the one or more slips include a plurality of wickers extending therefrom, the wickers having variable heights. 15. The system of claim 13, further comprising a collar disposed about an exterior of the tubular string and a conforming element disposed between the collar and the exterior of the tubular string. 16. The system of claim 13, wherein one or more bails is connected by a swivel to the top drive. 17. The system of claim 16, further comprising a lifting device that raises and lowers the external gripping member along the one or more bails. 18. The system of claim 16, wherein at least a portion of the external gripping member freely rotates with the tubular string. 19. The system of claim 13, wherein the external gripping member has a mating end, and the internal gripping member has a corresponding mating end that engages with the mating end of the external gripping member to transmit rotational forces therebetween. 20. The system of claim 13, wherein the actuator comprises a biasing member that urges the one or more slips a distance in one direction and a swivel mechanism that selectively controls the length of the distance. 21. The system of claim 13, wherein the actuator comprises a spindle drive. 22. The system of claim 13, wherein the external gripping member for engaging the tubular is hydraulically actuated. 23. The system of claim 13, wherein the external gripping member is coupled to a swivel. 24. A method for suspending and turning a tubular, comprising: gripping an outside of the tubular with a gripping member; positioning the tubular in alignment with a top drive after gripping the tubular; moving the gripping member toward a torque housing to couple the torque housing to the gripping member; and rotating the tubular to make up a connection between the tubular and a tubular string. 25. The method of claim 24, wherein the torque housing further comprises a second gripping member. 26. The method of claim 25, further comprising actuating the second gripping member to engage the inside of the tubular. 27. The method of claim 24, wherein gripping the tubular comprises supporting a weight of the tubular. 28. The method of claim 24, wherein coupling the torque housing to the gripping member comprises connecting the torque housing to the gripping member. 29. The method of claim 28, further comprising transferring torque through a connection connecting the torque housing to the gripping member. 30. The method of claim 29, wherein the connection allows the gripping member to move axially relative to the torque housing. 31. The method of claim 24, wherein the torque housing is rotatably coupled to the top drive. 32. The method of claim 24, wherein rotating the tubular comprises rotating the tubular using the torque housing, wherein the top drive is used to rotate the torque housing. 33. The method of claim 24, further comprising positioning the gripping member below the top drive to enable coupling of the torque housing and the gripping member. 34. The method of claim 24, wherein positioning the tubular comprising pivoting the tubular relative to the gripping member to align the tubular with the top drive. 35. The method of claim 24, wherein positioning the tubular comprises pivoting the gripping member relative to the top drive to align the tubular with the top drive. 36. The method of claim 24, wherein the torque housing is disposed above the gripping member. 37. The method of claim 24, wherein the top drive is disposed above the torque housing for rotating the tubular.
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