Organic six-prevention-effect rodless hydraulic driving double-action reciprocating pump

Abstract

The invention relates to an organic six-prevention-effect rodless hydraulic driving double-action reciprocating pump integrating corrosion prevention, scale prevention, wax prevention, viscosity prevention, gas prevention and sand prevention, and belongs to the new field of a mechanical oil production technology. The reciprocating pump consists of organic components of a reversing valve assembly, a hydraulic cylinder assembly and a liquid discharging cylinder assembly wich are connected in series by an upper male and female buckle joint, a lower joint and a fixed valve integral valve from top to bottom, wherein a sand removing and gas prevention device is selectively arranged under the lower joint and the fixed valve integral valve; and the hydraulic cylinder assembly and the liquid discharging cylinder can be connected in series and optimally combined into a single-driving single-discharging or single-driving multi-discharging or multi-driving single-discharging or multi-driving and multi-discharging hydraulic driving and discharging device according to different well depths, pressure and liquid discharging requirements. The pump has the obvious oil increase effect and various efficiencies including corrosion prevention, scale prevention, wax prevention, viscosity prevention, gas prevention and sand prevention, and is suitable for being popularized and applied in scales.

Description

Technical field [0001] The invention is an organic six-proof rodless hydraulic drive double-acting reciprocating pump integrating anti-corrosion, anti-scaling, wax-proof, anti-stickiness, gas-proof, and sand-proof, and belongs to a new field of mechanical oil extraction technology. Background technique [0002] In the oil field with rod pump mechanical oil production, without exception, inorganic steel pumps are used. Due to the complex geological conditions of the oil layer and the differences in the physical properties of crude oil, sand, wax, thick, scale, gas and high salinity corrosive media have severely affected the service life of the inorganic steel rod pump. Focusing on the problems of anti-corrosion, anti-scaling, anti-wax, anti-stickiness, anti-gas, and anti-sand, the oil production technicians made every effort to develop many advanced and practical new technologies and new processes. A large number of applications such as chemical sand fixation, cyclone sand remova...

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

Images