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Causes of Drill Pipe Failures by Robert Koch is a document available to read on EtoBox.
Drillpipe failures can occur due to excessive torque, tension, internal or external pressure, or fatigue from cyclic loads. Failures are caused by stresses on the drillstring from rotation, tension, and bending during directional drilling as well as corrosion from factors in the drilling mud like oxygen, carbon dioxide, salts, hydrogen sulfide, and organic acids. A case example describes identifying a drillpipe washout from a gradual pressure loss and weakening MWD signals, then pulling the string to find t
- Author
- Robert Koch
- Language
- EN