Abstract
We present the method to improve the operation effectiveness of wells by enhancing the electric-centrifugal pump. Some of the best ways to extend the electric-centrifugal pumps operating lifetime is using today's techniques as well as additional protective equipment as a part of the electric-centrifugal pump. In paper it is shown that high corrosiveness of formation fluid (a multi-component medium composed of oil, produced water, free and dissolved gases) is a major cause of failures of downhole equipment. Coil tubing is the most efficient technology to deal with this problem. The experience of coil tubing operations has proved that high-quality bottom hole cleaning saving the cost of operation due to a decreased failure rate of pumps associated with ejection of mechanical impurity.
Highlights
Nowadays, the use of electric-centrifugal pumps (ECPs) is the most advanced and efficient method of artificial oil lifts
High corrosiveness of formation fluid is a major cause of the failures of downhole equipment operated using this method [1]
Lifetime of the electric-centrifugal pumps can be increased by using additional protective equipment as a part of the ECP
Summary
The use of electric-centrifugal pumps (ECPs) is the most advanced and efficient method of artificial oil lifts. 2. The basic principle of the calculation of the ECP parameters To select a borehole pump it is convenient to use the method of artificial lift. The basic principle of this method is based on the following information: the well productivity index (based on the hydrodynamic research findings), the inclinometer survey, the gas/oil ratio, the formation pressure, the saturation pressure, the well water cut, and the concentrations of entrained solids [2]. Calculation algorithm for ECP include: receiving information about productive formation and well geometry, choosing the ECP setting depth and required lift, calculating the gas separation at the pump output, adjustment of the pump service properties, and selecting the electric motor, cable, transformer, and control station.
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