A tong as may be used for a continuous circulation system in a wellbore. The tong has a housing with a hollow interior. A plurality of spaced apart jaw assemblies reside within the housing's hollow interior for engaging a portion of a tubular to be gripped and rotated by the tong. A gear wheel is se
A tong as may be used for a continuous circulation system in a wellbore. The tong has a housing with a hollow interior. A plurality of spaced apart jaw assemblies reside within the housing's hollow interior for engaging a portion of a tubular to be gripped and rotated by the tong. A gear wheel is secured to the housing for rotating the housing and the jaw assemblies. The gear wheel includes a toothed outer circumference for mating with teeth of a drive shaft of a driving motor. A gear flange is movably mounted on the gear wheel such that rotation of the gear wheel does not rotate the gear flange.
대표청구항▼
We claim: 1. A kelly bushing, comprising: a base with a tubular channel therethrough from top to bottom, the base having a plurality of base axle slots, a roller support on the base, the roller support with a plurality of roller support axle slots, at least one roller having an axle with a first po
We claim: 1. A kelly bushing, comprising: a base with a tubular channel therethrough from top to bottom, the base having a plurality of base axle slots, a roller support on the base, the roller support with a plurality of roller support axle slots, at least one roller having an axle with a first portion movably positioned in a corresponding roller support axle slot of the roller support so that movement of the axle there moves the at least one roller with respect to the tubular channel, the axle with a second portion movably positioned in a corresponding base axle slots of the base so that movement of the axle therein moves the at least one roller with respect to the tubular channel, a leveling bar at the top of the roller support, the roller support movable vertically by moving the leveling bar, and the base axle slots at an angle to the roller support axle slots so that movement of the leveling bar effects movement of the base axle slots with respect to the roller support thereby moving the at least one roller with respect to the tubular channel into and out of contact with a kelly within the tubular channel. 2. The kelly bushing of claim 1, further comprising: a plurality of spaced-apart guide rods extending upwardly from the base and through openings in the leveling bar to guide movement of the leveling bar with respect to the base thereby guiding movement of the at least one roller. 3. An apparatus for use with a torque transmission member, comprising: a body; a channel extending through the body for receiving the torque transmission member; one or more engagement members coupled to the body, the one or more engagement members adapted to engage the torque transmission member; and wherein the one or more engagement members is coupled to two intersecting guide members and changing a point of intersection between the two intersecting guide members causes the one or more engagement members to engage or disengage the torque transmission member. 4. The apparatus of claim 3, wherein the one or more engagement members include an axle for mating with the two intersecting guide members. 5. The apparatus of claim 3, wherein the body comprises two body portions. 6. The apparatus of claim 3, wherein the one or more engagement members comprises a profile for engaging the torque transmission member. 7. The apparatus of claim 3, wherein the apparatus is coupled to a rotary table. 8. The apparatus of claim 3, wherein the one or more engagement members are radially movable to engage or disengage from the torque transmission member. 9. The apparatus of claim 3, further comprising an actuating member for moving the two intersecting guide members. 10. The apparatus of claim 3, wherein the apparatus comprises a bushing and the torque transmission member comprises a kelly. 11. The apparatus of claim 3, wherein the apparatus is positionable on a rig floor with the one or more engagement members beneath the rig floor. 12. The apparatus of claim 3, wherein the one or more engagement members comprise one or more rollers. 13. The apparatus of claim 4, wherein the axle is movable along the two intersecting guide members. 14. The apparatus of claim 5, wherein the two body portions are releasably connected. 15. The apparatus of claim 6, wherein the profile is adapted to transfer torque to the torque transmission member. 16. The apparatus of claim 9, wherein the actuating member is adapted to change the point of intersection between the two intersecting guide members. 17. The apparatus of claim 10, wherein the kelly comprises a polygonal profile. 18. An apparatus for use with a downhole tool, comprising: a kelly coupled to the downhole tool; and a kelly bushing, having: a body; a channel extending through the body for receiving the kelly; a roller coupled to the body, the roller adapted to engage the kelly; at least two intersecting guide members movably coupled to the body; and an actuating member for changing a point of intersection between the two intersecting guide members, wherein movement of the roller along the at least two intersecting guide members causes the roller to engage or disengage the kelly. 19. The apparatus of claim 18, further comprising a rotary table for rotating the kelly bushing. 20. The apparatus of claim 18, wherein the roller comprises a profile for engaging the kelly. 21. The apparatus of claim 18, wherein the downhole tool comprises a wellbore tubular. 22. The apparatus of claim 18, wherein a diameter of the kelly is larger than a diameter of the downhole tool. 23. The apparatus of claim 18, wherein the kelly comprises a tubular. 24. The apparatus of claim 19, wherein torque generated by the rotary table is transmitted to the kelly through the kelly bushing. 25. The apparatus of claim 20, wherein the kelly comprises a complementary profile for mating with the profile of the roller. 26. The apparatus of claim 21, wherein the wellbore tubular is selected from the group consisting of a drill pipe, a tool joint, and combinations thereof. 27. The apparatus of claim 25, wherein the complementary profile comprises a polygonal profile.
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이 특허에 인용된 특허 (78)
Schulze-Beckinghausen Joerg E. (Garbsen DEX), Active jaw for a power tong.
McDaniels Gary ; Cummings Patrick ; Hayes Michael ; Albright Steven ; Pietras Bernd G.,DEX ; Schulze-Beckinghausen Jorg,DEX ; Carlsson Andreas,DEX, Power tong.
Keast Larry G. (Houston TX) Horton Herbert D. (Mayhill NM), Power tong apparatus for making and breaking connections between lengths of small diameter tubing.
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