Spring type. Torsion springs cost more but deliver smoother operation and longer lifespan. Extension springs cost less but require more frequent replacement. Local labor rates. Cities with a higher ...

I recently wrote a piece discussing some of the basic differences between coil springs and leaf springs. But while putting the piece together, I ran into an interesting problem. Despite coil springs ...

Wellbore curvature and torsion greatly influence the forces applied on the downhole pipe string and its consequent deformation. They serve as the bases for calculating the drag and torque of a pipe ...