![]() ![]() ![]() The simulations show drillpipe rotation can improve the cuttings transport, and the effect is more pronounced for smaller particle size. But drillpipe rotation has no additional contribution to hole cleaning after a certain rotation speed. It was observed that small cuttings transport is mainly dominated by pipe rotation and fluid rheology, and improvement by pipe rotation in the transport efficiency of small cuttings is up to twice as large as the improvement in large cuttings transport. The results show that in lower inclinations, no critical range of rotary speeds is determined but higher meant better, and orbital motion can significantly improve cuttings transport. In experimental investigations, Peden et al. Numerous researches related to the effect of pipe rotation on hole cleaning have been carried out by experimental investigations and CFD simulations in the past several years. Warning: Invalid argument supplied for foreach() in /srv/users/serverpilot/apps/jujaitaly/public/index.php on line 447. ![]() Therefore, it is important and essential to study the key factors of cuttings bed development in annulus, especially if drillpipe is rotating. However, hole cleaning is often difficult to be handled during drilling inclined and horizontal sections of complex structure wells, and cuttings are easily accumulated to develop cuttings bed, especially in the inclinations around 4. Complex structure well includes horizontal well, extended reach well, and multilateral well, which has been widely used for offshore oil exploration and exploitation and improving the recovery of oil field. Double-click the downloaded file to install the software.Įffect of drillpipe rotation on cuttings transport using computational fluid dynamics (CFD) in complex structure wells. Download the free trial version below to get started. Impact of drilling fluid viscosity, velocity and hole inclination on cuttings transport in horizontal and highly deviated wells. ![]()
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