API 11AX, May 2015 – Specification for Subsurface Sucker Rod Pump Assemblies, Components, and Fittings

API 11AX provides the requirements and guidelines for the design of subsurface sucker rod pumps and their components as defined herein for use in the sucker rod lift method for the petroleum and natural gas industry.

This specification covers subsurface sucker rod pump assemblies (including insert and tubing), components, and fittings, in commonly used bore sizes for the sucker rod lift method. Sufficient dimensional and material requirements are provided to assure interchangeability and standardization of all component parts.

This specification does not cover specialty subsurface sucker rod pump accessories or special design components. Installation, operation, and maintenance of these products are not included in this specification; however, recommendations can be found in API 11AR.