METHOD OF PROFILE SHUTTER INSTALLATION IN WELL Russian patent published in 2010 - IPC E21B29/10 

FIELD: oil and gas industry.

SUBSTANCE: offer concerns gas-and-oil producing industry, particularly methods of troublesome zone isolation in well drilling with shutters of shaped tubes. The method involves connection of shaped pipe joints, lowering of the shutter in the troublesome zone, pressure straightening of the shutter and expansion to dense tight pressing to well walls, tight connection of the shaped pipe joints with their pin ends comprising an external surface narrowed to an end face and supplied with collars, and a coupling end comprising an internal surface extended to the end face and supplied with internal ring samples for pin collars. Besides the method implies machine fit and fixation with a ring enclosing the coupling end. The coupling end representing a taper socket with an internal seat is pressed out along the external surface of the pin end of the other shaped pipe joint in the form of the external taper surface by moving along the external surface to an end face of the ring with fixing the collars of the pin end in the samples of the coupling end of the matched shaped pipe joints.

EFFECT: reduced production costs, simplified design, and improved reliability of troublesome zone closing.

3 dwg