Automatic hydraulic augmented injection pump

Abstract

The invention discloses an automatic hydraulic augmented injection pump; the valve chamber of a reversing valve comprises an upper chamber and a lower chamber; the upper chamber and the lower chamber are respectively provided with water inlets; an upper chamber reversing valve core capable of moving in the upper chamber is arranged in the upper chamber, and a lower chamber reversing valve core capable of moving in the lower chamber is arranged in the lower chamber; a power piston and a piston rod capable of driving the power piston to move are arranged in a power cylinder, the reversing valveis respectively communicated with the left cylinder body and the right cylinder body of the power cylinder through a first header and a second header, and the first header and the second header are respectively communicated with the water outlet of the reversing valve through the upper chamber; and a supercharging piston capable of moving in a supercharging cylinder is arranged in the supercharging cylinder. The automatic hydraulic augmented injection pump can complete twice of augmented injection in one stroke, drains liquid and augments injection while feeding liquid so as to improve the working efficiency, and a liquid feed water source can be reused for numerous times.

Description

technical field [0001] The invention relates to a special water injection pump for an oil field, in particular to a hydraulic automatic booster injection pump which utilizes the incoming water from the pipe network of a pumping station as power to pressurize the incoming water. Background technique [0002] At present, oilfield water injection in the world basically uses a single pump pressure to inject water into multiple wells. Therefore, there are generally under-injection wells that need to be boosted and low-pressure water injection wells that need to be adjusted. Distinguishing different well conditions A new type of injection booster pump powered by incoming water, rather than simply relying on pressure reducing valves and electric booster injection pumps to achieve single-well partial pressure water injection is to solve under-injection of water injection wells in oil fields and avoid pressure regulation, greatly improving water injection pipes The fundamental way ou...

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Problems solved by technology

But there is following defect in this kind of ground dual-pressure hydraulic boosting pump: 1, because the high-pressure flowing water from the pumping station is not treated before boosting by this kind of ground dual-pressure hydraulic boosting pump, the impurities in the incoming water will affect the boosting rate. The service life of the injection pump will reduce the pump efficiency; 2. This kind of ground dual-pressure hydraulic injection pump also needs to be used in conjunction with the water distributor placed in the well, and it is troublesome to replace the water distributor placed in the well; 3. This kind of ground dual-pressure The reversing valve of the hydraulic booster injection pump is an ordinary reversing valve, and the ordinary reversing valve is only suitable for hydraulic oil with high filtration accuracy.

4. The liquid inlet valve and liquid discharge valve of the booster cylinder are set in a separate delivery pipeline, which is easily damaged in the open air

5. This kind of surface dual-pressure hydraulic booster injection pump cannot fine-tune the incoming water pressure. When the pump efficiency decreases or the pressure of the water injection well increases, another booster injection pump must be replaced

However, this kind of surface dual-pressure hydraulic injection pump has the following defects: 1. The injection pressure is relatively low, which cannot fully meet the requirements of increasing injection to a single well.

2. Only one additional injection can be completed in one stroke, and the work efficiency is low

3. When the liquid is injected, the liquid discharge and increase injection cannot be performed at the same time, the energy consumption is high and the efficiency is also low

4. The structure is complex, resulting in a short service life of the equipment

5. The influent water source cannot be recycled, which wastes energy and pollutes the environment

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