Devices for creation of perforations deep insight into oil and gas wells

摘要

The proposal relates to the field of well drilling and exploitation, namely a device for secondary opening productive strata by creating perforations in production strings of oil, gas and injection wells; fracture cement annulus and create deep penetration channels into the perforations. An apparatus for creating perforations in wells containing housed in piercers housing, each having a piston and a flush channel for supplying the working fluid and is mounted movably in the radial direction under the influence of hydraulic fluid pressure, according to the proposal is provided mounted in the housing a pressure transducer, intended for connection to the tubing (tubing) and having a through passage extending through the plunger and its piston, and gidromehan nical lock liquid flow switch mounted in said passage and adapted to be opened when creating tubing hydraulic fluid pressure and to ensure the supply of hydraulic fluid flow from the tubing into the cavity of the housing and impact on the pistons punch and with the possibility of closing when removing the tubing the working fluid pressure. Punches are preferably arranged in pairs with an angular displacement of the axes of each pair of punches relative to each other and offset along the punch axis of the device coinciding with the axis of the pressure transducer. Yl 3. 3 ZP f-ly.