The mechanical friction of liner operations is investigated and compared to what is expected for a conventional drill pipe. In addition the cuttings transport efficiency for realistic conditions is studied. The work is also relevant for running completion strings. This article is based on results from laboratory scale flow loop for drilling applications. Sand particles were injected while circulating the drilling fluid through the test section in some of the tests. The procedures used to conduct the experiments are explained and experimental results and observations are discussed. The drilling fluids and additives in these experiments are similar to those used in in fields on the Norwegian Continental Shelf (NCS). Friction coefficient is calculated from the measured torque for different flow velocities and rotational velocities and the force perpendicular to the surface caused by the buoyed weight of the string.
- Ocean, Offshore and Arctic Engineering Division
Experimental Investigation of Mechanical Friction and Hydraulics for Liner Drilling and Liner Running
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Ytrehus, JD, Taghipour, A, Lund, B, Gyland, KR, & Saasen, A. "Experimental Investigation of Mechanical Friction and Hydraulics for Liner Drilling and Liner Running." Proceedings of the ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology. Busan, South Korea. June 19–24, 2016. V008T11A037. ASME. https://doi.org/10.1115/OMAE2016-54049
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