METHOD OF SEAM HYDRAULIC BREAK AND DEVICE FOR ITS REALIZATION Russian patent published in 1994 - IPC

FIELD: oil industry. SUBSTANCE: method of seam hydraulic break is carried out by running perforator on tubing string with perforation holes made in vertical plane, by azimuthal orientation of perforator tubing string, by execution of slit perforation of well in position of perforator tubing string oriented azimuthally and stabilized against turning, by flushing of well, by lifting of perforator on tubing string, by running perforator on tubing string with packer and anchor, by pumping of break fluid and of sand-carrying fluid under pressure. Device to realize this method includes perforator on tubing string with perforated holes located in vertical plane, anchor unit positioned above perforator. Anchor unit is composed of body, pistons put into body perpendicular to its axis. Stopping members lengthened along axis of body are placed on ends of pistons. Inner surface of perforator tubing string has mark. EFFECT: execution of hydraulic break of seam in direction oriented azimuthally. 2 cl, 2 dwg