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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

Needed oil-output limits defy Trump’s misguided harangues

Parties to the Dec. 7 agreement limiting oil production had to take seriously messages coming from the US—but not tweets from the White House.
 
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BLM issues proposed final greater sage grouse plan EISs, amendments

The US Bureau of Land Management proposed final environmental impact statements and amendments to greater sage grouse habitat management programs in seven western US states. “With today’s actio...

Central signs gas sales contract for NT-to-Queensland system

Central Petroleum Ltd., Brisbane, is to sell gas to pipeline operator Jemena for commissioning of the Northern Gas Pipeline (NGP) connecting the Northern Territory pipeline grid to the Queensland s...

Baker Hughes: Canada drops 13 rigs for the week

Canada lost 13 rigs for the week ended Dec. 7, according to Baker Hughes data. With 186 rigs running, the count is less than the 219 units drilling this week a year ago. The number of oil-directed...

South Korean firm plans Australia’s fifth proposed LNG import terminal

South Korean developer EPIK, based in Seoul, has proposed the establishment of a floating LNG import terminal at the Port of Newcastle north of Sydney on Australia’s east coast. EPIK has signed a...

US late-November oil exports top imports

The US exported more crude oil and petroleum products than it imported during the week ending Nov. 30, according to the Energy Information Administration’s Weekly Petroleum Status Report. The cou...

Troll Phase 3 moves ahead with PDO approval

Equinor will work with partners and suppliers to bring on stream Phase 3 of giant Troll oil and gas field in the Norwegian North Sea in the first half of 2021 following approval of its development...

OPEC, non-OPEC producers agree to 1.2 million-b/d cut

The Organization of Petroleum Exporting Countries concluded a 2-day meeting in Vienna on Dec. 7 with an agreement to cut 800,000 b/d of production, while 10 non-OPEC countries agreed to cut 400,000...

Contract details outlined for North Dakota refinery

McDermott International Inc. has confirmed details of its scope of work on previously awarded contract by Meridian Energy Group Inc. to finalize front-end engineering design for Meridian’s grassr...

Baker Hughes: International rig count down 26 units in November

The international rig count for November reached 991, down 26 units from the 1,017 rigs counted in October and up 49 units from the 942 rigs counted a year ago, according to Baker Hughes data. The...

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Featured of the month

Company ...

Baker Hughes

Baker Hughes provides the world's oil & gas industry with products and services for drilling, formation evaluation, completion, production and reservoir consulting. Baker Hughes operates in over 90 countries worldwide mainly based in countries with a mature petroleum industry as is the case with most oil & gas service companies.

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Technology ...

Coiled tubing

Coiled tubing is a continuous string of tubing, rolled onto a spool. It is made from rolling strip material into a tubular form and resistance welding along its length. Coiled-Tubing (CT) continues to grow as an enabling technology that provides cost economy and time efficiency for the oil and gas industry. It has gained wider acceptance in all operations involved in oil and gas exploration.

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Article ...

Flow assurance

Flow assurance is essential to the sustained operability of production facilities. Flow assurance failures often result in production shut-down and costly interventions. What operating environments does flow assurance typically pose a challenge? Almost all, but some are worse than others.

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Contributor ...

Dr. Torben Lund Skovhus

Dr. Torben Lund Skovhus is Researcher and Project Manager at VIA University College in the Centre of Applied Research & Development in Building, Energy & Environment (Horsens, Denmark). Torben is currently chair of NACE TEG286X and ISMOS TSC an organization he co-founded in 2006.

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