FIELD: mining industry.
SUBSTANCE: method includes lowering perforation device into well on tubing column. Two diametrically opposed perforation slits are formed in operation column by moving two diametrically positioned extending elements. According to invention, as extending elements toothed cogs are used. Two perforation slits are formed gradually by increasing drilling by micro-impacts, delivered by toothed cogs because of stepped pressure generation in tubing column. According to method for opening beds, perforation device is lowered into well on tubing column. Two diametrically positioned perforation slits are formed in operation column by moving two diametrically positioned extending elements. As extending elements toothed cogs are used. Forming of two perforation slits is performed by gradually strengthening penetration by micro-impacts, delivered by cogs because of stepped pressure generation in tubing column. Then into received slits opening liquid is fed concurrently through hydro-monitoring heads, which are provided on perforation device, in form of two oppositely directed streams.
EFFECT: higher efficiency, higher durability.
2 cl
