The document discusses enhancing offshore pipeline emergency repair capabilities from 2014-2017. It notes pipeline diameters and inventory in SEIC. Pipeline failures like leaks and ruptures could be addressed with diverless equipment like hydro clamps, section replacement connectors, and ROVs. Currently available equipment requires divers. Emergency pipes are stocked in Kholmsk. The strategy is to use Oil States diverless equipment with a remote operated vehicle spread for cutting, welding, and coating removal to respond to emergencies without divers during ice conditions from December to May.

1. Offshore Pipelines Emergency
Repair Capability Enhancement
Diverless Services : (2014-17)
Rakesh Kumar
Sr Pipeline Engineer

2. 14” – 4 numbers
30” – 3 numbers
4” – 1 number
Pipeline Inventory in SEIC

3. Pipeline Failure - Offshore
Leak Rupture
Fix Hydro Clamp Section replacement-connectors
Diving Spread >10mtShallow Barge 1-10mt
No Resources during Ice
Condition – Dec to May
Ice Class Vessel, Work Class
ROV, Diverless Equipments
Current strategy

4. Currently available OIL States Equipments-Diver assisted
Leak Clamp
Connector
MAF

5. Emergency pipes stocked
in Kholmsk (fully
refurbished)
Stored in Kholmsk

6. Offshore Pipeline Emergency Documents
1 5600-Z-90-04-P-0017-00 Rev 02 Pipelines Emergency Response Plan (PA-A to Chaivo)
2 5600-Z-90-04-P-0016-00 Rev 02 Pipelines Emergency Response Plan (PA-B to Chaivo)
3 5600-Z-90-04-P-0018-00 Rev 02 Pipelines Emergency Response Plan (LUN-A to OPF)
4 2000-S-00-N-P-3272-00 Rev 06 PA-A Emergency Response Procedure
5 4000-S-90-04-P-0007-00 Rev 03 Lun-A Emergency Response Procedure
6 3000-S-90-04-P0008-00 Rev 02 PA-B Emergency Response Procedure
7 4000-S-56-43-P-0001-00 Rev 01 MEG Tie-In Spool Contingency Plan - Replacement with
Flexible Pipe
8 5025-S-90-90-P-0004-00 Rev 0 MEG Tie-In Spool Contingency Plan - Diving Workscope
9 5600-S-90-01-T-0019-00 Rev P1 Pipeline Repair Strategy

7. Ice during
March
near
platforms

8. With both connectors placed the spoolpiece (flanged section)
replacement is descending.
The connector on the left has been set. The connector on the
right was pulled to the replacement section by the tightening of
the nuts on the replacement flange.
The concrete protective coating has been removed. The
pipeline has been cut in two places and the deteriorated section
is being hoisted away.
The ends of the pipeline have been cleaned more than the
length of the connector.
REPAIR OF PIPELINE SECTION USING MECHANICAL CONNECTOR

9. Standard Diverless Spread

10. Diverless Spread-Lowering Frame
Lowering Frame

11. Diverless Spread
Coating Removal Units

12. Diverless Spread
Weld Seam Removal

13. Diverless Spread
1. Oil States equipments (clamps, MAF, connectors and
handling tools) –SEIC
2. Remote Diverless Spread: Hire
H Frames
Excavation tools
Pipeline Cutting and concrete removal tools
ROV special tooling with manipulator
Pipeline retrieval tools
3. Vessel and Logistics – SEIC
-to improve with 100ton