METHOD OF PRODUCTIVE STRATA WAVE PROCESSING AND DEVICE FOR ITS FULFILLMENT Russian patent published in 2008 - IPC E21B43/25 E21B28/00 E21B43/16 

FIELD: mining engineering; oil recovery.

SUBSTANCE: device includes cylinder and located in it plunger with ability of axis movement, connected with external drive of out-in traverse by hauling with inner passage. Cylinder and plunger are installed with ability of creation of isolated underplunger passage. Plunger is made as canted glass with ports on side and frontal surfaces and fitted with air valve in draft channel, and bleed-off valve located on upper frontal part of plunger. Method includes installing and fixing in cased well of plunger pair and periodical hydrodynamical acting on layer with pressure changing in underplunger passage. It is packed off the layer and tubular annulus and jointed with atmosphere while upper plunger stripping. At the end of upper plunger stripping - with block of well filling liquid, while down plunger stripping this passage with tubular annulus.

EFFECT: oil recovery improvement.

5 cl, 2 dwg