Specialized sucker rod pumps are insert and tubing SRPs with nominal size from 1 1/6” up to 4 3/4" specially developed for complicated oil production conditions when application of conventional SRPs becomes inefficient or impossible. Presently we offer solutions for high GOR; high solids content; high viscosity and emulsions; asphalt-wax-resin deposits (ARWD); deviated, low and deep wells.