A conical screw pump-based injection-production integrated oil extraction device

By combining a conical screw pump with a lifting mechanism, the problems of mechanical performance degradation of screw pumps and complexity of gas injection operations under high gas content conditions are solved, achieving efficient and safe integrated injection and production oil production.

CN117145429BActive Publication Date: 2026-07-07WUXI HENGXIN BEISHI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUXI HENGXIN BEISHI TECH CO LTD
Filing Date
2022-05-23
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

When existing screw pumps are used for oil production under high gas content conditions, the reduced gas porosity decreases the volumetric efficiency, leading to deterioration of mechanical properties. Furthermore, the gas injection process requires external force equipment, which prolongs the pump start-up and shutdown cycle and reduces oil production efficiency.

Method used

It adopts a conical screw pump structure and controls the gap between the conical rotor and the stator through a lifting mechanism to realize the air injection operation without the need to completely extract the rotor. Combined with alloy steel material and worm gear transmission, it improves safety and efficiency.

Benefits of technology

Gas injection can be achieved without affecting oil production, shortening the operation cycle, improving gas injection efficiency, avoiding water drive, enhancing the equipment's high-temperature resistance, reducing disassembly and assembly operations, and ensuring sealing and safety.

✦ Generated by Eureka AI based on patent content.

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    Figure CN117145429B_ABST
Patent Text Reader

Abstract

The application provides a conical screw pump-based injection-production integrated oil extraction equipment and relates to the field of oil collection. The equipment comprises a lifting mechanism connected to a supporting mechanism, the lifting mechanism is axially connected with a conical rotor through a lifting lead screw, the conical rotor is installed in a conical stator, the conical rotor is lifted through the lifting mechanism, a gas injection gap is formed between the conical rotor and the conical stator, during the gas injection operation, the entire rotor does not need to be lifted, the rotor only needs to be lifted to a certain height, a gas injection channel hole is opened, the gas injection operation can be realized, external force equipment is not needed, and the operation of lifting and lowering the pump and the well shut-in period are shortened.
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