 |
| Pipeline Burial / Trenching |
|
| Spot Excavation |
Pipelines / cables / umbilicals: |
Jack-up Rigs / Platforms / Subsea structures: |
| Pre-cutting excavation |
Pre-Sweeping |
Seabed preparation |
| Deburial / Hot tapping / precision controlled excavation |
Trenching |
Rig Penetration |
| Soils removal |
Backfilling |
Uncontrolled decent |
| Drill-cut removal |
De-burial & IRM |
Rig retraction/recovery |
| ROV dredging |
Lowering |
Spudcans cleaning |
| Diver Dredging |
Crossings |
Alternative to Swiss Cheese workover |
| |
Freespan correction |
|
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