Organic six-proof rodless hydraulic drive double-acting reciprocating pump

Abstract

The invention is an organic six-proof rodless hydraulically driven double-acting reciprocating pump integrating anti-corrosion, anti-scaling, anti-wax, anti-stickiness, anti-gas and anti-sand, which belongs to the new field of mechanical oil recovery technology. The pump is composed of an upper male and female buckle joint, a lower joint and a reversing valve assembly connected in series from top to bottom, a hydraulic cylinder assembly, and a liquid discharge cylinder assembly. The lower joint Selectively configure sand removal and gas prevention devices under the fixed valve, in which the hydraulic cylinder assembly and liquid discharge cylinder assembly can be optimally combined in series according to different well depths, pressures and liquid discharge requirements to form a single drive and single row Or single-drive multi-row or multi-drive single-row or multi-drive multi-row hydraulic drive device. The pump has multiple functions of anti-corrosion, anti-scaling, anti-wax, anti-sticky, anti-gas, anti-sand, anti-wear and obvious oil-increasing effect, suitable for large-scale promotion and application.

Description

technical field [0001] The invention is an organic six-proof rodless hydraulically driven double-acting reciprocating pump integrating anti-corrosion, anti-scaling, anti-wax, anti-stickiness, anti-gas and anti-sand, which belongs to the new field of mechanical oil recovery technology. Background technique [0002] In the mechanical oil recovery with rod pumps in oil fields, inorganic steel well pumps are used without exception. Due to the complex geological conditions of oil reservoirs and the differences in the physical properties of crude oil, sand, wax, thick, scale, gas and high salinity corrosive media seriously affect the service life of inorganic steel rod pumps. Focusing on the problems of anti-corrosion, anti-scaling, anti-wax, anti-stickiness, anti-gas, and anti-sand, oil production technicians have made every effort to develop many advanced and practical new technologies and new processes. Chemical sand consolidation, cyclone sand removal, high-efficiency sand fi...

AI Technical Summary

Problems solved by technology

[0009] The above research results will theoretically promote the progress of oil recovery technology, but it will also bring certain negative effects

[0010] First, although the centralized liquid supply on the ground solves the quality problem of power fluid, it virtually increases the difficulty of construction investment and management;

[0011] Second, the dispersed liquid supply of a single well is convenient for operation and operation, but the loss and replenishment of power fluid cause unnecessary troubles;

[0012] Third, regardless of the surface or underground hydraulic reversing, the reliability and life of the reversing valve are greatly reduced

[0015] Exploration is often only one step away from success. An in-depth analysis of the reasons why many patented technologies are difficult to transform into productivity is not a problem of the technical content of patented achievements, but the fact that the research process cannot get rid of the shackles of the law of inertia, and there are inertial thinking blind spots in research ideas, often a shortcut to breakthrough The essential crux of the technical problem can't be found when it's around

For example, to solve the anti-corrosion and scaling problems of downhole oil well pumps, people are used to researching expensive stainless steel or highly polluting non-ferrous metal coatings, instead of developing organic plastics with excellent anti-corrosion, difficult to scale, anti-wax and anti-thickening effects , not only to propose a plan for organic plastics, but also to use 100 question marks that have never been used before. As a result, many high-performance organic plastic products have been sent to the sky with satellites, but so far they have not been pumped into underground wells with oil pumps; another example is to improve For the life of the workpiece under frequent and continuous wear conditions, superhard and wear-resistant alloy steel is often preferred regardless of cost and demanding machining accuracy, but the technical approach of no wear or less wear is ignored

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