Case History Perforations Shut Off in Algeria
Application type: Perforations shut off
Casing: 7in x 29 lbs/ft Vertical well
Patch ID after setting:
Nominal: 5.63in | 142.95mm
Drift: 5.50in | 139.59
Temperature: 100°C | 212 °F
Depth: Perforations length from 3197m (10 489’) to 3212m (10 538’)
Patch setting pressure: 330bar | 4 789psi
To seal off perforations in a 7in casing #29 lbs/ft in an oil producer.
Perforations length 15m (49’). 7in SES Patch Reinforced 20.5m (pre-expansion length).
SES Patch has been set (post-expansion length 20.1m | 66ft).
A drilling Rig has been used for this operation.
Onsite welding of the patch was achieved without issue.
Non-standard length setting managed seamlessly
Post patch operations resumed immediately
The SES Patch was successfully expanded in 26 steps and drifted to 135mm. The expansion process lasted 7 hours from safety meeting to drift control. No pressure test has been done due to other perforations in the well.