Alternate path multilateral production/injection

A method of drilling and completing a well having intersecting first and second wellbores, the method comprising the steps of:

• interconnecting at least one apparatus in a casing string having an internal longitudinal flow passage formed therethrough, the apparatus including first and second passages formed therein, the first passage extending longitudinally through the apparatus and forming a portion of the casing string flow passage;
• positioning the apparatus in the first wellbore at a location where it is desired to drill the second wellbore;
• drilling the second wellbore by passing a drill string through the first and second passages;
• and
• flowing fluid between the second wellbore and a remote location through a third passage of the apparatus, the third passage being isolated from the first passage in the apparatus.

A method of completing a well having a first wellbore intersecting each of second and third wellbores, the method comprising the steps of:

• interconnecting first and second apparatuses in a casing string, each of the apparatuses having a first passage formed therethrough which forms a portion of an internal flow passage of the casing string, and a second passage intersecting the first passage and extending laterally relative to the first passage;
• positioning the casing string in the first wellbore;
• and
• receiving fluid from one of the second and third wellbores into one of the first and second apparatuses;
• separating hydrocarbons and water from the fluid received into the one of the first and second apparatuses;
• and
• flowing one of the separated hydrocarbons and water to the other of the first and second apparatuses through a third passage interconnected between the first and second apparatuses.