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.
Russia correspondent Vladimir Afanasiev reports from Salekhard on key LNG project's progress
Take a look at the best stories from this week's edition of Upstream newspaper.
Organisational review of deep-water region determines operator 'will require' 25% fewer offshore workers
Prices retreat 4% as climbing US rig count adds to glut worries
Operator runs into downhole pressure problems midway through first appraisal of US Gulf discovery
Houston junior sees lenders approve plan for restructuring
Company to supply critical equipment to Novatek-led project in Russia
Mark Papa makes his return to the industry with takeover of Delaware basin specialist
Poland watchdog says major pipeline project could undermine local competition
Texas makes biggest gains and adds 15 rigs with eight in Permian
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 Energy Co.’s revival of its dormant drilling program may be the beginning of the end for the U.S. natural gas rally.
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...
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.
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 has started production at the company's Gunflint oil development in the deepwater Gulf of Mexico.
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.
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 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.
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.
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