Ground-driven screw pump is a new type of oil recovery machinery, which utilizes rotary motion to achieve oil pumping with minimal mechanical and fluid loss. It is because of this special mode of movement and structural advantages of simple economy, so that the technology has other oil production equipment unmatched development prospects. Screw pump production technology has been in China's Daqing Oilfield, Dagang Oilfield, Jidong Oilfield and other major oil fields have a certain scale of applications, and achieved good economic returns.
As a kind of mechanical oil recovery equipment, the screw pump is maturing in the domestic processing and manufacturing and practical applications, and the supporting facilities such as the special driving rod are also getting better and better. Screw pump production process a one-time investment less, only pumping equipment and other lifting equipment half; system efficiency, 20% more than the pumping unit, the daily screw pump can save 50 kilowatt-hours of energy; maintenance management Convenient, the process without large lifting equipment, which can greatly reduce the labor intensity of workers; adaptability, sand wells, poor conditions of the wells, sand card is not easy.
In addition to the obvious advantages of reducing large-scale equipment on the ground, saving energy and saving operating costs, this technology also has the advantages of prolonging the production cycle of the oil well and preventing damage to the formation. The application prospect is very promising.
Screw pump production technology this year in Shu 4-7-014, Qi 2-5-3012 two wells into the test. Qi 2-5-3012 well production is normal. The well daily displacement of 28.8 tons, the average daily electricity consumption of 112.5 kilowatt hours, the pump efficiency was 98.5%, the system efficiency of 23.5%, the effect of contrast liquid by obvious.
Field tests show that the technology is suitable for popularization and application of oil wells with temperature less than 50 ℃, viscosity less than 8000 mPa s, sand content less than 5% of output fluid and relatively sufficient liquid supply capacity. From the perspective of improving economic efficiency, optimizing the development system and saving production costs, it is entirely possible to replace the traditional pumping unit lift with the screw pump production technology for the thin oil-old block and the heavy oil cold block that meet these well selection conditions Oil production process.Oscillating Cutting Machine
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