1. Electric submersible screw pump
In order to meet the needs of heavy oil wells, inclined wells and horizontal wells, the application of electric submersible screw pumps should be developed. The oilfield has successfully developed a downhole electric submersible screw pump. The system consists of a ground control system, a downhole cable, a screw pump, a protector, a reducer and a motor.
2. Explore the new screw pump:
It mainly includes the following pumps: metal stator screw pump, equal wall thickness stator screw pump, synthetic material screw pump, plug-in screw pump and multi-suction screw pump.
3, screw pump column unloading technology:
After the screw pump is stopped, although the driving device can catch the polished rod to prevent the reverse rotation, the elastic energy stored in the column and the screw pump motor effect caused by the difference in the oil level of the oil casing will cause the high speed rotation of the rod column or the dismantling wellhead process. Even the curved rods pose a safety hazard, and it is necessary to develop a corresponding bar column unloading technology during shutdown.
4, screw pump intelligent control technology:
Based on the wireless pump test and diagnosis technology of screw pump, the intelligent control technology of screw pump well overload protection and no-flow protection is developed, and the intelligent control technology of screw pump for on-line adjustment of speed and intelligent monitoring of supply and discharge relationship is ensured to ensure downhole pump. Operate in a water efficient area and under reasonable working conditions.
5. Research on adaptability of screw pump stator rubber:
According to the characteristics of crude oil physical properties in different blocks of different oilfields, the stator rubber of the screw pump is developed and optimized to match the physical properties of the crude oil, so that the application of the screw pump is targeted and purposeful, the service life of the stator rubber of the screw pump is extended, and the screw pump is improved. Overall pump cycle.
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