Main Page

From OilfieldWiki
Jump to: navigation, search
Welcome to Oilfield Wiki
the free collaborative knowledge portal for the oil/gas industry
6,738 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

Upstream RSS

Latest news from Upstream Online

Russia ‘to support Shell’s activities’

Russia will give “all the necessary support” to Shell in the Anglo-Dutch supermajor’s projects in the country, President Vladimir Putin has said.

Eni ready to launch bid battle for Mozambique floater

At least four groups said to be in line to receive papers as Italian moves at Area 4

Eni readies Mozambique floater battle

Italian major Eni is set to issue bid documents within weeks covering a multi-billion-dollar floating liquefied natural gas vessel destined to be deployed in Area 4 off northern Mozambique.

‘Dozens dead’ in S Sudan UN camp

Dozens of people have been shot dead at a UN camp in South Sudan that was stormed by hundreds of gunmen in a raid on Thursday.

Technip lands another Kaombo deal

Technip has won yet more work for Total's Kaombo project off Angola after landing a large umbilicals contract.

McDermott leads in Gendalo-Gehem race

McDermott of the US is back in pole position for the largest contract tied to the Gendalo-Gehem development in Indonesia.

Petrobras reports new pre-salt boost

Petrobras earlier this week hit a new production peak of 428,000 barrels of oil per day from its pre-salt fields, the company said Thursday.

Brent retreats on Ukraine statement

Brent crude oil fell on Thursday, stalling below $100 a barrel after the United States, Russia, Ukraine and the European Union jointly called for an end to the violence in Ukraine, taking some risk premium out of the market, while US oil rose on positive economic data, reports said.

Athabasca bows out at Dover

Athabasca Oil Sands will exercise an option to unload a 40% stake in the Dover oil-sands project for C$1.32 billion ($1.19 billion) after Alberta regulators greenlighted the development, the company said today.

Eni in Ukraine gas meet

Italian oil and gas major Eni said its outgoing chief executive met Ukraine's energy minister on Thursday and they agreed on the need to increase gas production in the country, which is at the centre of escalating tensions with Russia, according to a report.

PetroNeft confirms Oil India farm-out

Russia-focused PetroNeft has confirmed an $85 million farm-out deal with Oil India for a major acreage block despite a shareholder campaign that has aimed to change the company's board and trajectory.

Macondo commander charged with insider trading

US securities regulators have reached a settlement with a former BP Macondo incident commander over charges of insider trading in the wake of the 2010 lethal blowout, according to documents released Thursday.

Safinat S Sudan staff ‘still in UN camp’

Oil workers at Russian company Safinat who were caught in crossfire between South Sudanese forces and rebels at an oilfield earlier this week appear to have been thwarted in their attempt to flee to the capital Juba.

MOG loses Ombrina Mare case

An Italian court has ruled that UK-listed junior Mediterranean Oil & Gas must complete another environmental permit process for its Ombrina Mare gas field in the latest setback for the long-delayed project.

Lucas acquitted in Balcombe trial

A UK court has acquitted Green Party MP Caroline Lucas and four co-defendants on both charges brought over an anti-hydraulic fracturing protest last summer.

Baker Hughes lifts profit by 22%

Services giant Baker Hughes has boosted quarterly net profit by 22% year-on-year to $328 million in the first quarter.

Leviathan partners vie for Cyprus gas deal

The Noble Energy-led consortium at Israel’s Leviathan gas field has submitted a bid to supply Cyprus with piped gas under a long-term deal, partner Delek Group has said.

Schlumberger posts profit rise

Schlumberger has boosted its net profit in the first quarter due in part to growing new technology sales.

Eurasia sales slump in Q1

Adverse weather, increased mobilisation and the depreciation of the home currency sent first-quarter revenues down at Russian rig owner Eurasia Drilling.

Mewbourne notches up Bone Spring flows

Texas private Mewbourne Oil Company has garnered one of the highest ever flow rates in the Bone Spring sandstone formation with its most recent horizontal at Marathon Road, according to its junior partner.


Featured Technology of the Week

Deepreach.png
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...)