SEALING PACKER FOR INSTALLATION IN SIDE WELLBORE OF MULTIHOLE WELL Russian patent published in 2012 - IPC E21B33/12 E21B23/06 

FIELD: gas and oil production.

SUBSTANCE: sealing packer for installation in side wellbore of multihole well includes case with sealing element between top and bottom supports, device of packer transportation and installation. Sealing element can rest on annular gooseneck of liner in the selected wellbore of multihole well, top support features annular rabbeting on top end, and the case features annular lug at the outside with a collet mounted on the case below, spring-loaded outwards and fixated by shear pin. The case features external annular rabbeting for spring ring which can interact with annular thread of the collet. Transportation and installation device is made in the form of cup and pusher inserted telescopically in the cup and equipped with ball support on top, gripped in a spherical bushing. Cup and pusher feature interconnected radial channels linked to pipe string. Cup is pulled onto the case of sealing packer and fixated by shear element, and collet can grip top annular gooseneck of liner of the selected wellbore of multihole well, when extended.

EFFECT: reliable simple design allowing use of sealing packer in side wellbores of multihole wells without additional equipment.

2 dwg