Paper: New Design API Modified Sucker Rod Connection And Methods And Systems For Precise Connection Make-Up

The steel API sucker rod connection design used in beam and progressing cavity pumping systems has been an industry standard since the 1920"s. During these many years of continuous use, improvements have been made both large and small, yet this three part connection system is responsible for the majority of rod string connection failures. After 31/2 years of development, we now bring to the industry a new API modified four-part design with a method and system for precise make-up which expands load bearing capabilities and extends the working life of sucker rod connections. This paper describes development and testing work performed, information acquired, systems and methods created, and how the new API modified connection solves problems, eliminates or greatly extends time between failures, keeping work over and associated costs to a minimum. {See Figure - 1 }