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Gate valve bonnet failures from thermal expansion of fluids at high temperature - In a steam-assisted gravity drainage application, immediately after start-up, a gate valve bonnet failure caused a release of pressure to atmosphere. In thermal applications throughout the oil and gas industry, there have been incidents of valve failures during start-up. Resulting damage can include stretching studs and loss of pressure integrity between the body and bonnet. The main cause is pressure build-up in the gate valve cavity from thermal expansion of fluids, which was completely full and isolated. Such pressure exceeded the rated working pressure of the valve.

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Industry headlines

KrisEnergy appoints interim chief

Founding director Keith Cameron announces his retirement

Five join race for ONGC’s LEWP-3 platforms prize

Bids submitted for job to replace 10 WHP topsides on India’s Mumbai High North and South fields

Petroperu head sacked over spills

Government dismisses head of Peru's state-owned energy company

C&J reaches tentative deal with lenders

Nabors-controlled fracturing player hopes banks will wipe out debt in return for equity

Court overturns Northern Gateway approval

Enbridge's pipeline plan faced fierce opposition from green, aboriginal and community groups

Triangle subsidiaries file for Chapter 11

Parent company says will continue to pursue strategic alternatives

US tightens royalty rules

Industry pushes against regulations which aim to streamline and update valuation process

TransCanada closes $13bn Columbia deal

Buy makes Calgary-based company one of North America's largest gas transmission players

Oil falls on profit taking

Prices also pressured by returning Nigerian and Canadian crude output from outages

ExxonMobil: 'Liza up to 1.4bn boe'

US supermajor gives recoverable resource estimate at Guyana offshore oil find after appraisal probe

Lundin Petroleum completes Edvard Grieg acquisition transaction

Lundin Petroleum AB has announced the completion of the acquisition by Lundin Norway AS from Statoil Petroleum AS of an additional 15% interest in the Edvard Grieg field, PL338 and interests in ass...

Murkowski comments on Obama's latest anti-production regulation

U.S. Sen. Lisa Murkowski, R-Alaska, today issued the following statement after the Department of the Interior released its final regulation for valuation and revenue collection from oil, gas and co...

Oil pares biggest quarterly gain since 2009 amid rebalancing

Oil headed for the biggest quarterly advance in seven years as falling U.S. supply added to speculation the global surplus is easing.

Commodities shrug off Brexit on path to best quarter since 2010

Commodity investors aren’t letting the shock of Brexit spoil their best three months since 2010.

Triangle USA Petroleum, oil and gas explorer, files bankruptcy

Triangle USA Petroleum Corp., an oil and gas explorer working one of the largest shale oil reservoirs in North America, filed for bankruptcy with a plan to restructure that will keep its parent com...

Construction begins on Statoil's Johan Sverdrup riser platform

The riser platform construction start was marked today at the Samsung Heavy Industries yard in South Korea.

Exxon confirms world-class oil discovery offshore Guyana

Exxon Mobil today said that drilling results from the Liza-2 well, the second exploration well in the Stabroek Block offshore Guyana, confirm a world-class discovery with a recoverable resource of...

Stone Energy cancels Ensco rig contract, enters interim contract with Williams

Stone Energy Corporation has announced the termination of an existing long-term deepwater rig commitment and the execution of a new interim Appalachian midstream contract.

Tullow rises after detailing plans to fix Jubilee vessel fault

LONDON (Bloomberg) -- Tullow Oil detailed plans to fix a faulty turret at a production vessel at its flagship field off Ghana and revised its estimates of West African output. The shares rose.

Fugro deploys additional resource for the world’s largest seep-hunting survey

Fugro has deployed the multi-purpose offshore survey vessel Fugro Gauss to join the Fugro Brasilis offshore Mexico, to help complete the world’s largest seep-hunting survey for TGS.

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FMC Technologies, Incorporated

U.S.-based oil and gas equipment and services technology company. FMC Technologies was incorporated in 2000 when FMC Corporation divested its machinery businesses. FMC has its headquarters in northern Houston, Texas.

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Halliburton's DeepReach™ Coiled Tubing Servic

Halliburton's DeepReach™ Coiled Tubing Servic uses multiple outer diameter coiled tubing sections in a single string with larger OD sections near the top of the string and smaller OD sections near the bottom.

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Three phase separator

Produced well fluids typically contain a varied amount of oil, produced water, natural gas and sediment. The first step in processing these fluids is to split them up into individual components.

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