Sucker rod pin and coupling failures continue to plague the oil and gas industry and escalate lifting costs. The rod connection is solidly designed and is up to the task of staying together if it is properly treated in the field. Clearly, all paths to the root causes of the premature connection failures lead to field techniques, practices and to unrecognized and uncontrollable variances. The useful life of a sucker rod is clearly dependent in part, to how it is handled in the field.
This paper will present datasets gathered from the recently developed CDDs (Circumferential Displacement Device) to illustrate "the life" of the sucker rod connection from its initial first make up to point where permanent deformation might call for the retirement of the rod and or coupling.