Paraffins are organic deposits caused by changing wellbore conditions that upset the chemical equilibrium so that various materials in ...
Read More »Drill String and Bit Considerations in Deviated Wells
Drill String Design As inclination angle increases in a directional or horizontal well, the borehole walls support more of the drill string weight. This contact, along with the capstan effect (the normal force caused by the deformation of an axially loaded member about some obstacle), results in frictional forces that oppose the …
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