Snubbing Case History #11

Objective: Change production tubing and BHA to 60.3mm

Well Information: 18.5 Mpa sweet gas well, 3,100m deep

Procedure: Rig up snubbing unit and pressure test. Strip out tubing hanger and POOH, swabbing tubing as required. With 1 joint left, land tubing hanger and install 2.5m riser spool and strip out BHA. Change over handling equipment to 60.3mm and pressure test. Snub in packer assembly and 3,100m 60.3mm tubing. Strip in tubing hanger, set packer and land tubing. Rig out snubbing unit.

Time on location: 28 hours over 4 days.