ABSTRACT

The conveyance of multiphase fluids with very high gas volume fractions (GVF's) by means of multiphase screw pumps represents a challenging task. The correct prediction of the pump characteristics and temperature distribution inside the pump at GVF's from 90 % up to the loss of prime is very important. In this research, the most significant part of a new screw pump model is presented. This model deals with the compressibility, acceleration and heat transfer effects of the two-phase mixture inside the internal clearances. It is used to predict the decrease of the volumetric flow rate at very high GVF's. Furthermore a finite volume based CFD programme was developed to enable the calculation of the two-phase flow through all clearances, using the homogeneous equilibrium model.

Keywords:
investigation, bhr group 2007, hydraulic jet pump, screw pump, multiphase production technology 13, upstream oil & gas, artificial lift system, volumetric flow rate, performance curve, equation
Subjects:
Artificial Lift Systems, Well & Reservoir Surveillance and Monitoring, Formation Evaluation & Management, Hydraulic and jet pumps
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2007. BHR Group 2007 Multiphase Production Technology 13
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