T This research focuses on optimizing the hydraulic pumping unit (hpu) at well ce-8 in the sar field to increase production by improving its low volumetric efficiency, which was below 45%. the well\\\'s declining performance required a comprehensive evaluation of its artificial lift system. the analysis began with constructing an inflow performance relationship (ipr) curve to understand the fluid flow capacity from the reservoir to the bottom of the well. subsequently, the pump\\\'s operating parameters, namely stroke per minute (spm) and stroke length (sl), were evaluated. with the initial setting of 8 spm and an sl of 125 inches, the production rate was only 92.2 bfpd with a volumetric efficiency of 26.60%. optimization was then carried out by adjusting the spm and sl based on the well\\\'s actual characteristics. the result was a new combination of operational parameters, 19 spm and 62,5 inches, which successfully increased production significantly to 336 bfpd. the volumetric efficiency also surged dramatically to 85.77%. in conclusion, the optimization of the hpu\\\'s design and operational parameters proved to have a very significant impact on improving the production performance of well ce-8. precise adjustments based on well condition analysis successfully overcame the low-efficiency issue and boosted the production rate.