... at the tool-joint is directly estimated from the mesoscopic properties of the fluid flow, without resorting to simplifications, e.g.: drag and lift models. To do so, a tool-joint is assumed to rotate at constant velocity, while moving with a prescribed dynamic, while the flow dynamics is obtained...

... The top drive system rotating the titanium rod inside the drill pipe is driven by a servo motor and gearbox, providing 1300 RPM and 5 Nm. The rod is connected to the motor using a standard 3-jawed drill chuck which is an efficient technique to stabilize the rod during drilling and allow...

... casing and cementing liner rotation circulation assembly expandable liner provider installation Upstream Oil & Gas liner rotation objective expandable liner sidetrack expansion tool torque expansion requirement cement job launcher DART simulation annular pressure drilling...

... of time. As a result, these conditions have allowed drill-string whirl to be kept sufficiently steady with the consequence of severely damaging the tool-joints. Mathematical modelling of the drill-string behavior can help determining the critical rotational speed as a function of the weight on bit...

...% for the wells drilled using TBS technology. Figure 2 shows that average fraction of the total footage drilled using the rotation mode and sliding mode is 98.0% and 2% respectively for the wells drilled with TBS and 84.3% and 15.7% for the wells drilled with the conventional steerable mud motor. Abstract...

... long liners and meet the demands of ERD wells. Another critical advantage of the ELH is the ability to reciprocate and rotate while running in hole and during the entire cement job preventing bridging and packoffs and providing a quality cement job. These case histories provide evidence the sealing...

... Abstract A computational fluid dynamics (CFD) analysis is conducted on the flow of Newtonian and non-Newtonian fluids in annuli including the effect of inner pipe rotation. A practical numerical model is proposed that accurately estimates the annular frictional pressure losses with and without...

...-drilling technology application, and tailored drilling practices that not only made an undrillable well drillable but also set a new industry limit to run smart-completions. drilling fluid management & disposal Upstream Oil & Gas friction factor rotation loss circulation drilling fluids...

... as they approach the stall condition. The rotation of the reamer shoe can facilitate running a liner or casing through restrictions in the hole. This is especially useful when rotation from surface is either undesirable due to increased stiffness of the liner when rotated, or not possible due to the torque...