Problem: Heavy Air Leakage and Non functioning of Hi/Lo Clutch during Retrieval of Pull out of Drill pipes at 2450 mtr.
Observed Heavy air leakage from Relay valve input pipe(Damaged Relay valve fount at the bottom water sump). Ball valve is used to shut the air, Lo Clutch functionality resumed.Started Pull out of Drill pipes before casing. Relay Valve and control piping put back in place, Full functionality of Lo/Hi Clutch returned.
Interlock relay valve also Lubricated & checked before testing of Draw works.
Shut down was avoided, Safe retrieval of Drill String also before casing, which was planned in the subsequent day, Casing also completed as per schedule.
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