WELL BORE CONNECTION ASSEMBLY WITH VARIABLE CONFIGURATION Russian patent published in 2016 - IPC E21B19/16 E21B7/08 E21B17/04 

FIELD: oil industry.

SUBSTANCE: group of inventions relates to assemblies of well bore connection, methods for installation thereof and to downhole connection systems for branched or multilateral wells. In method of installation of well bore connection assembly is connected at least first and second tubular column with first connector opposite end of tubular column with similar sizes oriented connections, first and second tubular columns are made with possibility of interchangeable connection with connector oriented connections, third tubular column with second opposite end connector connected fourth tubular column with second opposite end connector, wherein fourth tubular column is located at least partially in third tubular column.

EFFECT: technical result consists in enhanced performance of well bore connection assemblies.

49 cl, 14 dwg