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2009•Oil Field EquipmentRequires access

Calculation of Annular Clearance Leakage for the Plunger and Pump Barrel of Sucker-rod Pump

Jianhua Wang

Open publisher page 1 citations

Abstract

Because of the effect of well fluid pressure,temperature and axial force imposed on the plunger and pump barrel as sucker-rod pump being in operation,the annular clearance between the plunger and pump barrel appeared to be a reverted cone along the length of the plunger.Based on the principle of fluid dynamics in the wedge clearance,accurate and simple approximate formulas were derived for calculating the annular leakages as the axes of pump barrel and the plunger being parallel and not parallel.The formulas provided a theoretical fact for calculating efficiency of sucker-rod pump.

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What this paper is about

Because of the effect of well fluid pressure,temperature and axial force imposed on the plunger and pump barrel as sucker-rod pump being in operation,the annular clearance between the plunger and pump barrel appeared to be a reverted cone along the length of the plunger.Based on the principle of fluid dynamics in the wedge clearance,accurate and simple approximate formulas were derived for calculating the annular leakages as the axes of pump barrel and the plunger being parallel and not parallel.The formulas provided a theoretical fact for calculating efficiency of sucker-rod pump.

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Available abstract

Because of the effect of well fluid pressure,temperature and axial force imposed on the plunger and pump barrel as sucker-rod pump being in operation,the annular clearance between the plunger and pump barrel appeared to be a reverted cone along the length of the plunger.Based on the principle of fluid dynamics in the wedge clearance,accurate and simple approximate formulas were derived for calculating the annular leakages as the axes of pump barrel and the plunger being parallel and not parallel.The formulas provided a theoretical fact for calculating efficiency of sucker-rod pump.

Key concepts: Plunger, Sucker rod, Barrel (horology), Plunger pump, Mechanics, Reciprocating pump, Variable displacement pump, Leakage (economics)

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