... tangent vector vector extremity gravitational component buoyancy force pipe inclination straight section Introduction For drilling and completion of wells it is important to be able to estimate and evaluate the mechanical forces experienced by a drill-sting or a completion string. Both...

.... drillstring design Upstream Oil & Gas wellbore trajectory displacement wellbore shape tangent vector formulation contact force minimum curvature model trajectory vector spline model curvature calculation cosh equation torque-drag model iadc spe 112623 trajectory model Introduction...

... Completion Installation and Operations lateral axial force Upstream Oil & Gas calculation discontinuity movement calculation wellbore cross-sectional area length change pipe injection packer trajectory design Hooke tangent vector PBR internal pressure equation expansion joint Lubinski...

... to show how these criteria can be used to validate torque-drag models. Some general observations are made about torque-drag model applicability, but the real value of this study is the test criteria themselves. curvature tangent vector coefficient equilibrium equation drillstring design...

... forces in the stability of tubing and in the stability of seafloor flowlines. axial torque axial force friction force equation drillstring design friction tangent vector reduction iadc spe 99099 initial buckling buckling Upstream Oil & Gas trajectory vector wellbore lateral...