.... Many persistent problems in sucker rod pumping including partial pump fillage, gas interference, gas locking, fluid pound, sticking valves, rod downstroke compression loading, equipment failure, reduced production, etc. are difficult to diagnose from the surface. Currently, verification of sucker-rod...

... Abstract The unique geometry of the RotaFlex pumping unit results in a constant torque arm (or torque factor) on most of the upstroke and downstroke. The geometry promotes high electrical efficiencies. These electrical efficiencies can be measured by comparing the work required to raise...

... and downstroke. This allows determination of the existing level of counterbalance and provides the most rapid and accurate method for counterbalance adjustment to achieve lower torque loading on the gear box and reduced energy utilization. One of the principal advantages of this balancing method...

... of the annulus and placed a significant distance apart allow continuous flow of fluids into and out of the separator during both the upstroke and downstroke of the pump. These innovations have resulted in a gas separator efficiency much greater than that of conventional designs. liquid column upstroke...

...POSITION - Top of The Upstroke The plunger valve has the hydrastatic pressure load. The top valve, or two-stage gas and sand check valve, is in equilibrium and the weight of the ball closes on the seat. POSITION - Start of The Downstroke The plunger starts down, vacating the chamber...

... card conventional sucker rod conventional sucker rod pumping system amperage requirement installation united states government downstroke torque cushioning device upstream oil & gas minimum polished rod load consumption fluctuation dynamic force exerted displacement INTRODUCTION...

... will offer distinct advantages over its beam counterpart. operation inch stroke spm performance analysis beam unit rod string upstream oil & gas polished rod load dynagraph upstroke valve hydraulic unit oklahoma engine downstroke sucker rod production control united states...