FIELD: oil production, particularly methods to isolate troublesome zones during well drilling and well repair with the use of shutters made of profiled casing pipes.
SUBSTANCE: method involves connecting profiled pipe sections with end cylindrical sections; lowering shutter to selected closing interval; preliminarily straightening shutter with excessive pressure in upper section; straightening remainder sections with wedge die and tightly pressing thereof to well wall.
EFFECT: increased shutter installation quality and reliability.
2 dwg
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