Freeze wellhead to remove damaged top section.
Well Information: 3,700kPa sweet gas well with damaged master valve not allowing access into tubing.
Procedure: Warm up wellhead to prevent gel from prematurely freezing. Install pumping equipment and pressure test. Inject gel into tubing. Install dry ice cribbing across tubing spool to produce plug in tubing hanger and tubing bellow hanger. Pressure test plug and replace damaged equipment.
Time on location: 8.5 hours