Dual-cylinder double-effect power-saving economical pumping unit for use in steel strip reciprocating type ultra-long-stroke pumping device

Abstract

The invention relates to an energy-saving pumping unit for reciprocating stroke pumping system with two wheel and double-effect steel belt, which is the improvement for prior mechanical pumping system. The invention provides an energy-saving pumping unit with small cubage, light weight, low cost, high oil amount, little exhaust power, long service life and in repairing and installing convenience. The invention comprises roller drum for winding belt (7) (14), continuous steel belt (4.2), clockwork spring, releasing and forcing mechanism for forcing to each other (5), gear transmission mechanism (3) and magnetic fluid sealer (6.3).

Description

Technical field: [0001] The present invention relates to the improvement of the structure of the surface part pumping unit of the oil pumping unit: and the intermediate part polished rod connecting the surface and the downhole. Background technique: [0002] Rod pumping unit is an important equipment for mechanical oil extraction. About 80% of the production wells in domestic oil fields use rod pumping technology, 60% of the country's liquid production and 75% of oil production rely on rod pumping equipment. picked. The beam pumping unit is the most important rod pumping unit, as shown in Figure (1). A variety of complex conditions such as flooding and strong corrosion often occur, and the shortcomings of the beam pumping unit oil pump are becoming more and more obvious, mainly in: [0003] 1. The stroke loss of the oil well pump is large. Due to the action of the load, the sucker rod and the oil pipe are deformed, causing the stroke loss of the oil well pump plunger. [...

AI Technical Summary

Problems solved by technology

[0003] 1. The stroke loss of the oil well pump is relatively large. Due to the action of the load, the sucker rod and the oil pipe are deformed, which causes the stroke loss of the oil well pump plunger

[0004] 2. The quality of the pumping unit is large, but the volumetric efficiency and efficiency of the pump are not high

[0005] 3. The volume of the pumping unit is large, and the general floor area is at least 7.8*2.9*6.9 meters, and the maximum is 10.5*2.31 meters*9.3 meters

[0007] 5. Large power consumption, the minimum motor power is 7.5kw, the maximum is 37kw

[0008] 6. Not suitable for gas-bearing wells, deep wells, low-permeability wells or heavy oil wells, etc.

[0009] 7. The running stability is poor, the acceleration of the suspension point is too large, and the direction changes at any time

[0017] 15. Single stroke, pumping oil upwards, doing useless work downwards, wasting energy

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