Electric submersible centrifugal pumps
Hit
RINPO LLC, a subsidiary of Sistema-Service Group of Companies, produces electric submersible centrifugal pumps.
Details
Electric submersible centrifugal pumps
Purpose
Used for lifting reservoir fluid, as well as in reservoir pressure maintenance systems. ESCPs allow pumping liquid with a capacity of 188.7 to 7 862 barrel/day with a flow of up.Construction
There are three groups: 5 – 4.87 in.; 5A – 5.118 in.; 6 – 5.839 in.. The pump case diameter is 3.622, 4.055, and 4.488 in. respectively. The pumps consist of an top section (with a fishneck for attaching the pump to the tubing), middle sections, an input module, a check valve, and a bleed valve.Application
For oil well operation (high-rate, flooded, deep, and inclined wells).Work principle
The pump does the main work—lifting the liquid. The pump consists of sections, and sections consist of stages. The more stages, the greater the maximum pressure of the pump. The larger the stage, the greater the flow rate (the amount of fluid pumped per unit of time). The more flow rate and pressure it has, the more energy it consumes. Everything is connected. The pumps, in addition to flow rate and pressure, also differ in size and design—standard, wear-resistant, corrosion-resistant, wear-corrosion-resistant.Reservoir fluid characteristics
• Reservoir fluid is a mixture of oil, production water, and petroleum gas;• Maximum fluid density – 87.4 lb/ft³;
• Maximum kinematic viscosity of a single-phase fluid, which provides operation of the pump without
changing the pressure and efficiency – 0.01 Stoke.
• Hydrogen index of produced water pH – 6.0–8.5;
• Maximum solids mass concentration for pumps:
- standard version – 0.09988 oz/ft³ (0.01%);
- corrosion-resistant version – 0.1998 oz/ft³ (0.02%);
- wear-resistant, wear-corrosion-resistant version – 0.4994 oz/ft³ (0.05%);
- increased corrosion and wear-resistant version – 0.9988 oz/ft³ (0.10%);
• Microhardness of particles according to the Mohs scale, not more than:
- conventional, corrosion-resistant, corrosion-wear-resistant version – 5;
- increased corrosion and wear-resistant, wear-resistant version – 7;
• Maximum content of production water – 99%;
• Maximum content of free gas at the pump intake – 25%;
• By volume, with the use of a gas separator as part of the unit – 55%.
• Maximum hydrogen sulfide concentration for pumps:
- standard, wear-resistant version – 0.009988 oz/ft³ (0.001%);
- corrosion-resistant and wear- corrosion-resistant versions, increased corrosion and wear resistance
– 1.249 oz/ft³ (0.125%);
• Temperature of the pumped liquid up to 302 °F
• Maximum hydrostatic pressure in the installation area – 5.802 ksi.
Advantages
In high-flow areas (over 503.2 barrel/day), ESPs have the highest efficiency among all methods of artificial oil liftCharacteristics
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Questions and answers
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