Method of casing multilateral wells and associated apparatus

Details Method of casing multilateral wells and associated apparatus Method of casing multilateral wells and associated apparatus

E - Fixed Constructions

21

B

E21B 33/00 (2006.01) E21B 41/00 (2006.01) E21B 43/10 (2006.01) E21B 43/14 (2006.01)

Patent

CA 2355798

A method of casing multilateral wells and associated apparatus provide increased diameter in wellbores drilled below a casing splitter. In a described embodiment, a casing splitter is positioned in a subsea wellbore with a minimum restriction of 18.565", with the casing splitter attached at a lower end of a 13-3/8" casing string. Two 8-1/2" bores extend through a lower end of the casing splitter, whereby only one standard casing size is skipped due to the wellbore junction formed by the casing splitter.

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