TDW completes pipeline pressure isolation offshore Malaysia

Offshore staff

STAVANGER, Norway – TDW Offshore Services (TDW) has completed a pipeline pressure isolation operation for Talisman Malaysia Ltd. The operation was carried out on a 24-in. pipeline extending between two platforms located off the coast of Peninsular Malaysia.

TDW used the SmartPlug pressure isolation tool to replace a shutdown valve (SDV) on a key section of a gas export pipeline without having to bleed down the line. To execute the double-block pressure isolation, the SmartPlug tool was launched and pigged with nitrogen for about 20 m (66 ft) past the valve and into the riser, and then set the tool vertically in the riser. The SmartTrack system was used to track the tool as it traveled along the pigging route, and to monitor pressure throughout the entire operation.  

For 11 days, the SmartPlug tool remained in the line, creating a double-block isolation. Pipeline pressure was maintained at 90 bar (1,305 psi) while Talisman replaced the valve. After the valve was replaced, TDW set the third module of the SmartPlug tool so that a test on the new valve against an operating pressure of 99 bar (1,436 psi) could be performed. The SmartPlug tool was then unset and pigged back using gas pressure from the pipeline. 

From mobilization to demobilization, the entire operation was completed in 16 days. The pressure isolation operation was carried out by TDW personnel based in Stavanger, Norway, and Singapore, and an independent engineering agent of TDW in Malaysia. 


TDW Offshore Services pipeline intervention

Related Articles

Tap signs PSC for block offshore Myanmar

Aug 27, 2015

Tap Oil has formalized its debut as an operator offshore Myanmar.

CNOOC bringing more fields onstream offshore China

Aug 26, 2015

CNOOC has issued a review of its operations offshore China during the first half of 2015.

Tanjong Baram tieback leads to changes at West Lutong A

Aug 21, 2015

EnQuest says the Tanjong Baram field development offshore Malaysia came onstream on schedule in June.

Fluor, CNOOC combine on fabrication yard

Aug 20, 2015 Fluor Corp. (NYSE: FLR) and China National Offshore Oil Corp. subsidiary Offshore Oil Engineering Co. Ltd. have agreed to form a new joint venture, COOEC Fluor Heavy Industries Co. Ltd., through wh...

CNOOC signs PSC with Roc for two South China Sea blocks

Aug 19, 2015

China National Offshore Oil Corp. has signed two production-sharing contracts with Roc Oil (China) for blocks 16/07 and 03/33 in the South China Sea.

Trending News

Crude oil prices move upwards of $50 for the first time since July

Oct 8, 2015

Crude oil prices rose above $50/bbl in New York for the first time since July on speculation that demand is picking up, according to a report in the Houston Chronicle. 

GMC Intelligently Connected Pipe eliminates offshore welding

Oct 8, 2015

GMC was named as a finalist for the American Society of Mechanical Engineers International (ASME) Global Pipeline Award for its Intelligently Connected Pipe.

Offshore photo of the day

Kvaerner, Dragados scoop remaining Johan Sverdrup jackets

Oct 8, 2015

Statoil has awarded contracts for two more platform jackets for the Johan Sverdrup complex in the central Norwegian North Sea to Kvaerner Verdal and Dragados Offshore.

Energy Ministry downgrades Norway petroleum revenue estimate

Oct 8, 2015

Norway’s Ministry of Petroleum and Energy estimates the state’s net cash flow from the petroleum industry in 2015 at almost NOK 218 billion ($26.6 billion).

Digital Magazine
Look Inside
Current Issue
Click to view the Offshore Learning Center

Oil & Gas Jobs

Search More Job Listings >>