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. 

7/13/2012

TDW Offshore Services pipeline intervention

Related Articles

Aqualis Offshore signs MSA with Atwood Oceanics

Dec 16, 2014

Aqualis Offshore has signed a master service agreement with offshore driller Atwood Oceanics.

ONGC makes oil and gas discoveries offshore India

Dec 15, 2014

ONGC has made new offshore oil and gas discoveries – one in the deepwater KG basin off the east coast of India, and the second in the Mumbai offshore basin off the west coast.

Liuhua gas field goes onstream offshore China

Dec 15, 2014

CNOOC has started production from the Liuhua 34-2 gas field in the eastern South China Sea, where water depths range from 850-1,250 m (2,789-4,101 ft).

Liwan marks first-ever deepwater gas development offshore China

Dec 12, 2014 Husky's Liwan Gas Project is the first deepwater gas development offshore China. The project, in block 29/26, delivered first production this year, approximately seven years following its discovery...

Nido acquires GPC shares from Otto Energy

Dec 12, 2014 Nido Petroleum Ltd. and Otto Energy Ltd. have executed a sale and purchase agreement whereby Nido will acquire 100% of the shares in Galoc Production Co. WLL, the holder of Otto’s 33% working inter...

Trending News

IHS paints gloomy picture for oil prices ahead

Jul 31, 2015

With oil production from the US, Saudi Arabia, Iraq, and to some degree Russia rising in the face of declining prices, and with output from Iran looming on the market, IHS Energy sees another drop in per barrel prices as possible.

Offshore photo of the day

Mexico to postpone deepwater auction, revise bid terms

Jul 31, 2015

Officials with the Mexican government have indicated that it will postpone auctions for deepwater oil exploration and production contracts, and adjust the terms of upcoming tenders, according to reports from Reuters and the Financial Times. 

INPEX to drill offshore Japan in 2016

Jul 31, 2015

The Agency of Natural Resources and Energy of the Ministry of Economy, Trade and Industry of Japan has commissioned INPEX Corp. to drill one exploratory well for its “Heisei 26~28 Domestic Offshore Drilling Program in Japan.” 

Dragados completes giant Mariner field jacket

Jul 31, 2015

The jacket for Statoil’s Mariner project was loaded out recently from Dragados Offshore’s yard in southwest Spain.

  Offshore
Digital Magazine
Look Inside
Cover
Current Issue

Oil & Gas Jobs

Search More Job Listings >>