| US 7,600,564 B2 | ||
| Coiled tubing swivel assembly | ||
| Rod Shampine, Houston, Tex. (US); Vishal Saheta, Houston, Tex. (US); and Matthew E. Wilson, Eureka, Kans. (US) | ||
| Assigned to Schlumberger Technology Corporation, Sugar Land, Tex. (US) | ||
| Filed on Dec. 30, 2005, as Appl. No. 11/323,684. | ||
| Prior Publication US 2007/0151721 A1, Jul. 05, 2007 | ||
| Int. Cl. E21B 19/00 (2006.01) | ||
| U.S. Cl. 166—90.1 [166/77.2; 239/195; 239/197] | 19 Claims |
| 15. A method of pumping a fluid into a wellbore comprising:
providing a pump;
providing a string of coiled tubing attached to a coiled tubing reel;
connecting a coiled tubing swivel assembly between said pump and said string of coiled tubing, wherein said connecting comprises:
mounting a mandrel to the pump, and
rotatably mounting a hub to the mandrel through a slewing ring of oblongly arched bearing races accommodating a bearing and
further mounting the hub to an end of the string of coiled tubing, wherein the mandrel and the hub together form a fluid conduit;
and
operating the pump to pump said fluid into the wellbore, via the fluid conduit and the string of coiled tubing, wherein the
slewing ring is not in direct physical contact with the mandrel.
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