DRILLED PARKER Russian patent published in 2010 - IPC E21B33/12 

FIELD: oil-and-gas production.

SUBSTANCE: drilled parker contains setting tool, which includes hydraulic cylinder with bottom support, piston with adapter on the top, top and bottom connecting rods, the connecting rod made with radial canals and stiffly connected with a tip with a process holes to a perforated nipple, a sealing unit, which includes a sleeve, a deformable barrel and a drift with widening angle on its top, connected on the bottom part with a fitting, through a share ring - with the tip and the perforated nipple, which telescopically installed into the drift, equipped with external cylindrical sections, a cutting-off valve and a blind valve, fixed on the tip with a lock ring. The is telescopically installed directly into the deformed barrel and into the bottom support, relatively to which the tip in its transport position fixed with a share bolt. The shut-off valve made as a plug with external ring sampling, hermetically installed into the tip and fixed with stoppers, installed into the tip's process holes with ability of limited movements towards outside incase of share ring destroy and the drift penetration, also with ability to interact in transport position plug ring sampling from the inside, and with drift - from the outside, which external cylindrical sections have a similar diametre, separated with at least one ring cavity with a edge, directed to the sealing unit, at that the drift's widening angle is 20-25° relatively to the parker axis. The deformable barrel's internal cylindrical surface is double-stepped with the smaller diametre on the top, and the upper rod over the piston equipped with outside ring cavity, and the cylinder's sub in its upper part equipped with inside selection with a spring ring, executed with ability to interact with the upper rod ring cavity and piston fixation in the extreme upper position. Use of the bored parker because of drift improved design, which angle is 20-25° relatively to the parker axis, and external sections have the same diametres, separated with at least one ring cavity with the edge, allows to drift widening barrel twice for a drift's single pass, which it its turn made double - staged with the smaller diametre (D1<D2) on the top.

EFFECT: received cone is pressing the sleeve to the production string walls, which increases the bored parker setting reliability in the wells defined interval and avoids its sliding, avoids its resealing during the bored parker installation in to the well.

2 dwg