TYPE OF JOB
|
TYPE OF WELL
|
RECOMMENDED FREQUENCY
|
Wellhead Valves Integrity
|
Wells in populated area
|
2 times per year
|
Non-residential – desert to rest etc
|
Once every 2 years
|
All other wells
|
annually
|
SSV/SSSV/ESD TEST
|
All wells
|
2 tests per year
|
Wels with ESP
|
2 tests per year
|
Wells in populated area
|
2 tests per year
|
Annual Surveys
|
All other wells
|
Annually
|
Landing Base Inspection
|
All wells
|
Once every 10years
|
Wells over 30 years old
|
Once every 5year
|
Corrosion Logs
|
All fields
|
Representative wells should be selected in all producting fields to be logged through tubing or during their workover to establish the rate of corrosion in every field (or area within a field)
|
Wells with no previous corrosion logs
|
Calculate the Remaining Casing Life(RCL) by dividing the total metal thinckness by the rate of corrosion (for wells with Remaining Casing Life exceeding 20 years, assume 20 years of Remaining Casing Life(RCL)
|
Wells with previious corrosion logs
|
Determine the rate of corrosion and calculate RCL.
Run corrosion logs based on numbers of years
|
All Wells
|
Issue workover proposal if the Remaining Casing Life (RCL) is less than 4years
|
