DEVICE FOR GASLIFT EXTRACTION OF OIL Russian patent published in 1997 - IPC

FIELD: oil and gas industry. SUBSTANCE: to reduce specific consumption of compressed gas for extracting product from wells, diameters of holes made in bush and gaslift tube are kept within 0.05-0.1 mm, and distance between them in lateral and longitudinal directions is determined from relation = 1.5-2 where 1 - distance between holes, mm d - diameter of hole, mm. Relation of diameters of gaslift tubes and holes is according to relation = 380-1500. Number of holes is determined from relation n=1.25 , where Q_g - consumption of compressed gas, m3/s, W - velocity of gas flowing through hole of diameter, m/s. Holes made in bush and gaslift tube are located relative to each other at angle a = 45-60^o. EFFECT: high efficiency. 3 cl, 3 dwg, 5 tbl