Case:The feild test of Hollow air proof & oil extraction tool set used for carbon dioxide drive in Daqingzi area oil field
The test of dioxide drive for Daqingzi area oil field in Jilin, while the oil extraction well becomes effective, dioxide higher, oil-gas ratio higher, casing pressure higher. Normal pump in the influence of gas, coefficient of fullness drop, pump efficiency lower, impact the oil production in some extent.
The hollow air proof & oil extraction tool set produced by Puyang Kerui Mechanical Engineering Technology Co.,Ltd, is composed of hollow air proof pump and multi-function oil-gas separator. Hollow air proof pump open up the passageway for the gas in the oil-gas separator, solved the return pump and gas locking; multi-function oil-gas separator improved the effect of oil-gas separate under well.
From March, 2011 this tool set has two the field pilot test in Daqingzi area oil field for dioxide drive: black 59-2-3 well and black 59-8-10 well, and obtain the good result. Production performance analysis shows that after the application the average single well increase fluid 4.5m³/day, increase 2.7t, containing water cut 10%. Injection-production relationship improved in injection-production, Contradiction between the layers get remission. Allowed recommend this tool set and the matching tools has a widely application.