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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

Yamal LNG on target for first cargo

Russia correspondent Vladimir Afanasiev reports from Salekhard on key LNG project's progress

The best of Upstream this week

Take a look at the best stories from this week's edition of Upstream newspaper.

Shell cuts US Gulf staff by 25%

Organisational review of deep-water region determines operator 'will require' 25% fewer offshore workers

Oil ends week lower

Prices retreat 4% as climbing US rig count adds to glut worries

Noble halts Katmai drilling after 'kick'

Operator runs into downhole pressure problems midway through first appraisal of US Gulf discovery

Halcon wins support for Chapter 11 filing

Houston junior sees lenders approve plan for restructuring

AEG wins Yamal LNG power job

Company to supply critical equipment to Novatek-led project in Russia

Silver Run buys out Centennial

Mark Papa makes his return to the industry with takeover of Delaware basin specialist

Nord Stream 2 gets antitrust warning

Poland watchdog says major pipeline project could undermine local competition

US adds 14 oil rigs

Texas makes biggest gains and adds 15 rigs with eight in Permian

Suncor's emissions goal seen challenging even without total cuts

Suncor Energy Inc. plans to hold total greenhouse gas emissions at current levels through 2030, even as it boosts crude production by targeting a reduction in carbon output per barrel.

Southwestern's gas drilling revival could be bad sign for U.S. bulls

Southwestern Energy Co.’s revival of its dormant drilling program may be the beginning of the end for the U.S. natural gas rally.

BOEM to broadcast next month’s Gulf of Mexico lease sale online

BOEM Director Abigail Ross Hopper announced Friday that the bureau will offer 23.8 million acres offshore Texas for oil and gas exploration and development in a milestone lease sale that will inclu...

Operators add 14 oil rigs in longest streak since August

U.S. oil producers continue to revive drilling in the shale patch, adding rigs for the fourth consecutive week in the longest streak of increases since August.

Oil glut deeper than just crude exposed as recovery stumbles

For almost two years, the spotlight in the global oil market has been on a surplus of crude. The latest stumble in prices has shown that the glut extends further.

Noble Energy starts production at Gunflint in deepwater Gulf of Mexico

Noble Energy has started production at the company's Gunflint oil development in the deepwater Gulf of Mexico.

Total signs long-term LNG agreement with Japan’s Chugoku Electric

Total has signed a binding Heads of Agreement with Chugoku Electric for the direct supply of LNG for a period of 17 years starting from 2019.

Oil’s second quarter shaping up to be best of the year

For oil companies, the second quarter might be as good as it gets. Shares gained more than in any other industry, thanks to crude rising from a 12-year low.

Precision Drilling eyes Kuwait growth once oil prices recover

Precision Drilling Corp. is eyeing growth in Kuwait and other Middle Eastern countries once crude prices recover as a way to reduce dependency on North American markets, CEO Kevin Neveu said.

Fraclog in the biggest U.S. oil field may all but disappear

The number of dormant crude and natural gas wells in the U.S. stopped growing in the first quarter—and may all but disappear in the nation’s biggest oil field should prices hold steady.

Featured of the month

Company ...

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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Technology ...

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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Contributor ...

Marc Archibald

Scale Specialist at Clariant Oil Services, Chemist 1 at Nalco Champion, Senior Development Chemist at Clariant Oil Services

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