DEVICE FOR RADIAL RESERVOIR EXPOSING Russian patent published in 2007 - IPC E21B7/08 E21B29/06 

FIELD: oil production industry, particularly to change well bore orientation in radial direction along with window cutting.

SUBSTANCE: device comprises body with bent channel and anchor rigidly connected therewith and located downstream of the body. The body is connected with lift pipe string and may perform limited axial displacement by means of pin connection. The body has additional bent channels with inlets offset from body axis and uniformly distributed along a circle. Device has rotary bush installed over the body. The bush may rotate and has longitudinal orifice made as asymmetric funnel and figured slot. The slot is closed and extends along outer bush surface to cooperate with pin secured to lift pipe string so that as lift pipe string reciprocates relatively the body lower outlet of asymmetric funnel is successively aligned with inlet of one bent channel.

EFFECT: increased simplicity and decreased costs, provision of guaranteed cutting tool rotation and removal without body orientation change.

2 dwg