| 摘要 |
FIELD: oil and gas industry.SUBSTANCE: group of inventions is related to oil industry and may be used for the well. The method of valve actuation in the well includes accumulation of energy due to differential pressure across the closed valve locking device and allocation of at least part of the accumulated energy at opening of the locking device. The valve used in the well includes a closing device, displacing device and a drive, which conserves energy in the displacing device acting under differential pressure across the closing device. The valve includes the closing device and a drive, which actuates the valve, at least partially, under differential pressure across the closing device.EFFECT: technical result lies in increase in operational efficiency of the downhole valve.15 cl, 22 dwg |
