SOUTHAMPTON, UK – Oil Spill Response Ltd. (OSRL) and the Subsea Well Response Project (SWRP) have completed work on a containment toolkit that can be deployed to minimize the environmental impact of a subsea well incident.
This follows their delivery of four subsea well capping stacks, designed to shut in an uncontrolled subsea well, during 2013-2014.
The new toolkit, designed to work alongside standard industry well test hardware (i.e. vessels, well test equipment, drilling riser, BOP, inner string, coil tubing unit), incorporates long-lead items said to be not readily available.
It includes a flowline end termination; side-entry flow spool with subsea test tree latch; diverless subsea connectors; coiled tubing termination head; chemical distribution assembly; deployment reels for flying leads; flexible jumpers/flowlines; topsides transfer pumps and coolers; hose end valves; and offloading hoses.
In cases where a well cannot be shut in, the containment system can be used to flow hydrocarbons from a subsea well to the surface for safe storage and disposal.
During a response, it can be assembled in one, two, or three containment legs depending on the situation, providing additional response flexibility.
This toolkit will be stored in strategic locations to facilitate timely response worldwide. Its flexible subsea jumpers and subsea flowlines are too large to be transported by air, so three sets will be stored in the UK, Brazil, and Singapore ready for onward transit.
All other components are air-freightable and stored with the original equipment manufacturers in the UK, USA, and Norway. This toolkit includes guidelines to assist a well owner/operator in the development of a well-specific containment response plan.