METHOD OF TRANSPORTATION AND ORIENTATION OF JET CHARGES, ORIENTED HOLLOW-CARRIER JET-TYPE PERFORATOR, METHOD OF PERFORATING AND ORIENTED PERFORATOR SYSTEM Russian patent published in 2006 - IPC E21B43/117 E21B43/119 

FIELD: oil producing industry; perforators.

SUBSTANCE: according to invention, weight of one or several components of perforator string is increased. Adapter provided with wheels and turnable casing are installed between one or several components of perforator string and tool string. Non-uniformity of bending moment of perforator string is determined. Oriented perforator contains one or several jet charges provided with envelope, perforator carrier, charge tube, adapter with roller wheels and turnable casing. Weight of one or several components of perforator string is increased eccentrically and center of gravity of envelope is changed. Method of perforating is used according to which well hole is reflected and tool string is used for transportation of perforator system. Adapter is placed between tool string and perforator system. Perforator system is orientated and orientation is acknowledged. Oriented perforator system contains perforator string and tool string, adapter with roller wheels arranged between perforator string and tool string, turnable casing and swivel arranged between perforator string and tool string and provided with at least one thrust bearing and support buffer member.

EFFECT: facilitated transportation and orientation of perforator system devices.

29 cl, 56 dwg