Gabor Takacs Technical University of Miskolc Miskolc, Hungary Direct energy costs for sucker-rod pumping can be optimized by selecting the right pump size, stroke length, and pumping speed for the required liquid production rate. Calculation procedures for a computer program are developed for optimizing the design of conventional pumping units. The developed program is an alternative to API Bulletin RP 11L and improves the accuracy of pumping system design. ARTIFICIAL LIFT The aim of artificial-lift design is to ensure the most economical means of liquid production within the constraints imposed by the given well a...

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