Extensible transition joint for control line protection

An extensible transition joint (ETJ) for a primary wellbore and a secondary wellbore, comprising:

• a first member;
• a second member, wherein the first member is movably disposed in the second member to retract into the secondary wellbore from the primary wellbore;
• and
• a lock operable to secure the first member relative to the second member to provide different positions of the first member relative to the second member.

A system for passing a control line from a primary wellbore to a secondary wellbore, the system comprising:

• an extensible transition joint (ETJ) comprising:
• at least two members;
• wherein a first member is operable to retract into a second member, wherein the first and second members of the ETJ are operable to receive the control line passing through the primary and secondary wellbores;
• and
• a tool operable to engage and disengage the ETJ to position the ETJ.

A method for passing a control line from a primary wellbore to a secondary wellbore, the method comprising:

• disposing an extensible transition joint (ETJ) into the secondary wellbore, wherein the ETJ comprises:
• a first member;
• and
• a second member, wherein the first member is movably disposed in the second member to retract into the secondary wellbore from the primary wellbore;
• extending the ETJ from the secondary wellbore into the primary wellbore through a window that is disposed between the primary wellbore and the secondary wellbore;
• and
• passing a completion string through the ETJ, the completion string comprising a control line.