FIELD: oil extraction, in particular, lifting of oil from deep wells.
SUBSTANCE: device includes disk valve with barrel, positioned in lower section of perforated casing string, made with apertures, analogical to apertures of perforation of casing pipe. Barrel is made with possible combination of its apertures with apertures of casing pipe in well and is held on compression pipe, made with apertures for oil, by means of U-shaped post. Barrel has packing gland in upper section and pressing ring for holding the packing gland during lowering of barrel into casing pipe.
EFFECT: increased debit of well, its productiveness and economy of resources spent on lifting.
1 dwg
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