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该类型泵是针对煤层气井在排采过程中大多采用丛式井,开采井斜度较大,常规泵下井后阀球开启不够及时,煤粉等固体颗粒进入井筒后容易造成卡泵、砂埋管柱;煤层气井产气后气体也会对抽油泵有影响,导致排采效率下降、气锁等问题,研制的煤层气井专用斜井防气泵,该泵具有防煤粉与防气体影响的双重作用,可以防止停抽时煤粉卡泵现象的发生,同时还可以通过环形阀进行气液置换,保证游动阀开启及时,减少气体的影响,提高排采效率。
This type of pump is for the CBM wells in the mining process, most of the use of cluster wells, mining wells gradient larger, conventional pump down after the valve ball is not open enough time, coal and other solid particles into the well after the easy to cause the card pump, sand buried The gas column will also affect the oil pump after the gas is produced in the CBM well, which will lead to the problems such as draining efficiency and air lock, and the developed special inclined well anti-gas pump for coalbed methane wells. The pump has dual effects of anti-pulverized coal and gas prevention The utility model can prevent the occurrence of occurrence of pulverized coal card pumping during the stop of pumping and can also replace the gas and liquid through the annular valve to ensure the timely opening of the traveling valve and reduce the influence of the gas and improve the efficiency of discharging.