| 摘要 |
A tubing rotator includes a first annular body and a second annular body. The second annular body is concentrically positioned within an interior bore of the first annular body. Gears are provided to rotate the second annular body relative to the first annular body. The interior surface of the second annular body is smooth and has an interior seating portion that is tapered. A tubing hanger is provided having an exterior surface that is smooth and has an exterior seating portion that is tapered. The tapered exterior seating portion of the tubing hanger engages the tapered interior seating portion of the second annular body to form a taper lock, which couples the tubing hanger with the second annular body solely by frictional engagement.
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