... in bit torque can cause a significant and undesired change in the tool face. The wellbore friction along the string will hinder an immediate twist response, but after some time, typically 1-30 minutes but strongly dependent on the ROP and the string length, the axial motion of the string will cause...

... tool face, slow ROP, etc. The good news is that static friction while sliding can now be greatly reduced by effectively converting it to kinetic friction; kinetic friction being much less inhibitive to drilling operations. The following paper introduces a drilling tool that breaks static friction...

... Abstract This paper introduces bending tool face, a new measurement with applications in directional drilling. The measurement is derived from two perpendicular bending moment sensors in the BHA and identifies the orientation of BHA bending with respect to gravity high side while drilling, both...

... 26 ft behind the bit. These sensors delivered two perpendicular bending moment measurements referenced to gravity high side. Transmitted to surface via mud pulse telemetry, the two signals were further processed to deliver the well tool face and - with the help of a mathematical BHA model...

... of penetration (ROP) by more than three-fold in some cases. Reducing motor stalls to zero (sometimes seven stalls per slide were recorded for the conventional method on a slide distance that ranged from 5 ft to 15 ft). Reducing time to orient tool face by an order of magnitude. Tool face orientation...

... tool face correction longitudinal drag field test downhole motor tool-face correction directional drilling iadc spe 87162 driller motor mwd system slide drilling directional well tool-face angle drillpipe drilling operation reactive torque surface torque upstream oil & gas...

... the risk in running casing. trajectory azimuth bha prediction drilling operation continuous direction directional driller tool face spe iadc 67752 inclination curve rate sequence tortuosity directional drilling upstream oil & gas tendency information rotate sequence steerable...

... rotation spe 35055 upstream oil & gas lateral assembly mwd system articulated lateral motor dogleg assembly drill collar tool face SPE 35055 Short Radius Drilling System Randal H. PustanykSp.erry:Sun O.rilling..Services..otCanada Copyright1996, Society of Petroleum Engineers This paper...