DEVICE FOR STIMULATION AND CLEANING OF BOTTOMHOLE FORMATION ZONE

摘要

FIELD: treatment and cleaning of bottomhole formation zone; applicable in construction and operation of wells. SUBSTANCE: device has successively installed and interconnected by pipes; shank, check valve, implosion device in form of cylinder with hollow plunger having holes in side walls, and tubing connected with hollow plunger and communicated with plunger cavity. Device is provided with hydraulic decolmatator of slide-valve type installed between check valve and implosion device. Hollow plunger is made with check valve designed for communication of plunger cavity with under-plunger cavity during supply of fluid to tubing. EFFECT: higher productivity, increased permeability of bottomhole zone, improved quality of fluid filtration at considerable distance from perforation interval. 5 cl, 3 dwg