Main Page

From OilfieldWiki
Jump to: navigation, search
Welcome to Oilfield Wiki
the free collaborative knowledge portal for the oil/gas industry
6,741 articles in English

Your participation is vital. Please JOIN and contribute!

Industry Alerts!

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.(more...)

Featured Article of the Month

A 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. This generally takes place at some types of separator. A three phase separator uses gravity to separate produced well fluids into gas, oil, and water phases.

Three phase separators may be designed in either vertical or horizontal configurations. In a horizontal separator, fluid enters the vessel and hits an inlet diverter. The resulting sudden change in momentum provides the initial gross separator of liquid and vapor. The liquid collection section of the vessel must provide sufficient for the oil and emulsion to form a layer or pad above the water. A weir maintains the oil level while an interface controller maintains the water level... (more...)

Featured Company of the Week

05logo 001.gif

FMC Technologies, Incorporated (NYSEFTI), is a 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.

Named by FORTUNE® Magazine as the World's Most Admired Oil and Gas Equipment, Service Company in 2012, the Company has approximately 18,400 employees and operates 30 production facilities in 16 countries. FMC Technologies designs, manufactures and services systems and products such as subsea production and processing systems, surface wellhead systems, high pressure fluid control equipment, measurement solutions, and marine loading systems for the oil and gas industry.(more...)

Featured Editor of the Month

Marc Archibald.jpg

Marc Archibald

  • Scale Specialist at Clariant Oil Services: October 2012 – Present (1 year 3 months)
  • Chemist 1 at Nalco Champion: February 2010 – September 2012 (2 years 8 months)
  • Senior Development Chemist at Clariant Oil Services: September 2001 – January 2010 (8 years 5 months)

Industry Headlines

Shell faces Arctic setback

US officials rule in favour of walrus protection regulations

Transocean wades in to combat over-supply

Drilling giant earmarks 21 of its units for attrition, as analysts say the blood-letting has only just begun

Gastar smiles at Utica dry gas gusher

Company's second well in shale gas play hits stellar IP rate

Abu Dhabi 'eyes Taqa merger'

Emirate reportedly considering combining debt-laden energy company with another state-owned unit

Cenovus in $2.66bn asset sale

Canadian oil sands player sells huge swathes of acreage to local pension plan

Harvey Gulf launches shipbuilding unit

US marine transportation contractor acquires two shipyards to be managed by new affiliate

Maersk Oil awaits approval for Culzean

Danish company approves ultra-high-pressure high-temperature internally, with FID planned soon

Samsung lands $888m Sverdrup deals

South Korean yard to build two platforms for Statoil project, as first reported by Upstream

Israel airs Leviathan outline deal

Noble and Delek to be allowed to keep control of giant gas field if proposal passes public consultation

Exploration well count seen falling 20%

Small- and mid-cap E&Ps to take largest cuts, while large-caps and majors ‘holding firm’, consultancy says

Germany delays fracking vote

Passing legislation on shale gas drilling postponed as parties fail to reach agreement: report

Statoil submits new Gullfaks area plan

Norwegian major to develop Shetland and Lista finds through subsea tiebacks to Gullfaks facilities

Oando in $461m downstream sale

Nigerian player selling controlling stake in West Africa downstream business to Vitol-connected company

DECC: UK fracking rejection ‘disappointing’

UK government continues to be confident in the ‘huge potential of shale gas’, it says

Eni in Pertamina deal

Italian player signs agreement for liquefied natural gas coming from Jangkrik fields

Technip wins Libra topside gig

French engineering player awarded contract on FPSO to be stationed in Santos basin pre-salt play off Brazil

Northcote drills at Shoats Creek

London-listed player spuds Lutcher Moore twin well in Louisiana

Total selects Elk-Antelope plan

Development concept chosen for onshore LNG project in Papua New Guinea

CNOOC Ltd starts Bozhong flows

Series of Bohai shallow-water oilfields begin production with peak output set for next year

Gulfsands hunts fresh funds

London-listed explorer eyes private placement to repay loan following axed strategic tie-up with Arawak

Wood Group buys Canadian player

Beta Machinery Analysis to add to the service offerings of existing subsidiary

Oil continues to fall

Both benchmarks on track to post a monthly loss

Yinson to focus on oil and gas sector

Malaysian player also looking to raise cash through a private placement

Petrobras cuts production unit targets

Cuts part of newly announced business plan that sees production and spending slashed

Podcast: Paranoia in the Middle East

This week, The Bit looks at how Saudi-Iranian relations impact security in the Middle East, plus new details on plans in the US Gulf and the TMS

Africa Energy exits two Puntland blocks

Toronto-listed player cites political uncertainty in volatile region as reason for quitting blocks

Imperial Oil defers Arctic plans

Canadian company and partners request seven-year extension to exploration licence

Siemens, Dresser-Rand deal approved

European Commission greenlights $7.6 billion merger, scheduled to close on Tuesday

New York formally bans fracking

Final report from state environmental officials affirms previous decision to bar practise

Supreme Court declines Macondo appeal

Highest US court will not hear BP case on Clean Water Act fines

Oil hits three-week lows

Crude prices drop 2%as Greek fiscal crisis worsens

Pennsylvania to cut FracFocus ties

Marcellus shale state's DEP will develop own chemical disclosure website

Cheniere takes on debt for Sabine Pass

US LNG company will assume about $5.8 billion for fifth train at Louisiana facility

Petrobras slashes spending in new plan

Under-fire Brazilian oil giant releases new five-year strategy, with investments to drop

UK council says 'no' to fracking

Local government rejects proposal made by Cuadrilla Resources to drill in north-west England

Falklands players silent on legal move

European and US oil companies mum amid Argentina federal order to seize their assets

Tourmaline in Mapan move

Calgary-based explorer snaps up compatriot in deal worth around $86 million

Amerisur in Petro Dorado SA buy

More Colombian acreage for London-listed explorer with $6 million company acquisition

Statoil to tap Gullfaks finds

Development plan to be filed with authorities for Shetland-Lista pair at veteran Norway field

Husky in South White Rose start-up

Calgary-based player says extension of field off Canada to ramp up to about 15,000 bpd

Shandong makes $165m Northern offer

Blue Ocean Drilling-connected player in cash offer for Houston-based driller

Salander nod for E.ON

German player gains drilling permit for upcoming wildcat in Norwegian Sea

Saudi fixation with Iran is damaging

Leaked exchanges show depth of mistrust between Middle East producers

UK player eyes Ivory Coast block

African Petroleum inks preliminary pact with potential partner on prospective tract ahead of drilling campaign

Sevan Marine in Brazil probe

Norwegian floating tech player enlists law firm to investigate reports of corruption involving ex-manager

Bjaaland safety slap for OMV

Austrian explorer criticised by agency for failure to assess iceberg collision risk at Barents well

Sevan Drilling to delist

Existing entity to be replaced on Oslo bourse under corporate move to Bermuda

Changes in Iran for services companies

Competition for foreign players looms after home need to fill sanctions gap

Egdon farms-out of Holmwood

London-listed player to keep smaller interest in the Weald basin licence

Polarcus in $27.5m multi-client sale

Seismic player makes decision to sell part of library amid 'challenging market environment'

Build-up on Johan Sverdrup

Kvaerner starts fabrication of first jacket for giant project off Norway

Oilex starts Cambay gas sales

Company looking to increase sales to local market as more wells are planned to come back online at Indian field

AWE spuds Waitsia probe

Drilling starts on appraisal well in Western Australia's Perth basin

Oil drops below $59

Prices head south in early trade on eurozone worries

Origin provides assurance over Sinopec APLNG deal

Origin reaffirms SPA with Sinopec is take-or-pay amid media reports the Chinese company could struggle to take gas

Argentina orders seizure of Falkland explorers assets

Five companies operating off disputed South Atlantic islands targeted in court order

Eni, KMG finalise Isatay agreement

Duo to explore Caspian Sea block off Kazakhstan

Gunmen kill NOC official

Chief of operations killed in Kirkuk as he leaves office

New Standard to focus on WA assets

Australian junior reaches deal to sell stakes in US and South Australian projects to Sundance Energy

Anton wins Iraq workover contract

Chinese oilfield service provider the successful bidder for three-well gig

Final sprint for Sverdrup topsides contracts

Three Korean yards in race for fabrication awards, but one now has the edge, sources say

Chevron supportive of marriage ruling

US supermajor says landmark Supreme Court decision reflects company's 'inclusive work environment'

Investors pressure Penn Virginia

Shareholder urges Eagle Ford player to launch 'robust' review after rumoured rejection of BP offer

Some shales more equal than others

Plight of floundering Samson Resources shows it is better to have one great asset than many marginal ones

Study: Oil sands fuels emit more

Emissions associated with oil sands-derived fuels 20% greater than those from fuels derived from conventional oil

Featured Technology of the Week

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.With this arrangement, the tension along the string length is reduced while sufficient flow capacity is retained for performing well intervention operations.

Tapered OD Makes the Difference

The vertical depth capability of conventional coiled tubing is limited because as the length of the tubing string increases in the well, the string’s total weight also increases; therefore, the capability of a conventional CT string to perform ultra-deep work depends primarily on the string’s total hanging weight and the yield strength of the parent metal. If the hanging weight exceeds the pipe’s yield strength, a string separation can occur. Since a tapered coiled tubing string is lighter in weight (compared to a single string of the largest diameter) and its design provides greater strength at the upper end of string, operators can realize up to a 30 percent increase in depth capability over conventional CT strings.

Key Enabling Technologies

Multiple technologies were developed to enable DeepReach coiled tubing to be used in deep well operations. These technologies

include 1) the CT transition joints, 2) Boots & Coots V-Block® gripper design, (more...)