Customer Challenges
- Major North Sea operator to permanently abandon all wells and decommission their facility (first production 1996)
- Five well campaign planned for 70 days
- Delivered via rigless thru-tubing abandonment supported by a self-erecting jack-up barge
- Challenges included potential salt accumulations in wells restricting wellbore access
Expro Excellence
- Multi barrier perforation: a combination of existing technology (and Expro proven track record of perforating through multiple barriers using standard deep penetrating or big hole perforating charges) and new technology developed and tested
- New technology: successful design, development, testing, build and delivery of three new PAC™ gun systems within 82 days of award
- Delivered on slickline vs e-line
- All guns (5 x 2.125" guns; 12 x 3.125" guns) run and successfully fired
- A total of 12 cement plugs squeezed through the perforating zones to fully comply with abandonment regulations
- Three successful tubing cuts performed, including cutting a triple encapsulated injection line to ensure no conduit was left through cement plugs
- Client commendation received for performance
Value to Client
- No rig required: tubing remained in the well
- No requirement for e-line: one PCE rig up per well which saved time
- Reduced personnel costs: 3-man, multi-disciplined, intervention crew
- Safe, cost-effective, technology-driven solutions
New technology: Owen's PAC™ (Plug & Abandonment - Circulation)
A long-term working relationship between Expro and Owen Oil Tools contributed to the accelerated design, development and delivery of the three new PAC™ gun systems:
Superior option to standard tubing/casing perforators
0-360 degree coverage
Large diameter exit holes
Designed and developed to produce limtied damage to secondary string regardless of primary to secondary string orientation
Multiple tubing/casing string penetration
