First line: routine wellhead maintenance
Surface pressure measurement
Second line: non – routine wellhead maintenance and Adhoc jobs
Change – out of bean box, flow line safety valves gates & seat Assy of master, wing, swab (survey), gate valves.
Rectify faulty safety system for emergency shut-in of wells.
Re-set flow lines safety valves
Plugging and unplugging BPV with the use of rig-lubricator
Installation and change-out of Christmas trees