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

Hurricane Energy set for Lancaster drill

UK explorer mobilises rig to appraise west of Shetland light oil find

Saipem lands $4bn Kaombo prize

Saipem has been confirmed as the winner of two contracts totalling more than $4 billion for Total's Kaombo field development off Angola.

ONGC deepens G1-GS15 development

Subsea 7 and Singapore’s Halllin Marine have begun the third phase of installation work for Oil and Natural Gas Corporation’s G1 deep-water field in India’s Bay of Bengal.

IKM in 'Oiltools buy'

Norwegian drilling waste management specialist Oiltools has reportedly been acquired by the IKM group after filing for bankruptcy.

Safinat staff fleeing S Sudan oilfield

A Russian contractor working at an oilfield in South Sudan where fighting erupted this week is evacuating all of its staff from the area after a number were injured in crossfire.

Mercury 'in Statoil orbit'

Statoil is reported to have confirmed a third well to be drilled as part of its upcoming exploration campaign in the frontier Hoop area of the Barents Sea, with the Mercury prospect now also firmly in its sights.

PTT cuts spending plans

Thai energy giant PTT said it plans to cut its 2014 investment budget by as much as 30% to 60 billion baht ($1.86 billion) as the country's ongoing political unrest delays the launch of new projects.

IGSS takes a loss

Russia’s IG Seismic Services moved to a loss in 2013 as capital expenditure took a 77% jump and revenue eased off.

PA dips into the red

Sweden’s PA Resources fell into the red during the first three months of the year as revenues slipped on lower production.

Technip, Heerema cash in on Kaombo

French company Technip and joint venture partner Heerema Marine Contractors have won a lucrative $3.5 billion contract with Total Exploration & Production Angola.

Brent eases on mixed Chinese data

Brent crude edged towards $109 a barrel on Wednesday, coming off a six-week high as mixed Chinese data and a gradual resumption of Libyan oil exports offset support from the Ukraine crisis.

Shale to continue to boost US output

Output from the Bakken and Permian shale oil formations should rise by 650,000 barrels per day by the end of 2015 to 3.1 million barrels, according to energy intelligence group Genscape.

Sterling closes gap

Calgary-based Sterling Resources has closed its yearly loss for 2013, posting a loss of $31.2 million.

CIMC delivers second COSL jack-up

Chinese yard CIMC Raffles has delivered a jack-up drilling rig to China Oilfield Services Limited (COSL), the second of three jack-up rigs the yard is scheduled to deliver to China’s top offshore drilling service provider in the first half of this year.

Ezion lands $78.7m in new work

Singapore’s Ezion Holdings has won two contracts to provide service rigs worth a combined US$78.7 million.

Rig hit by heavy seas

The crew of semi-submersible rig Ensco 8506 continues to pump incoming seawater out of its breached ballast tanks after one of the hull columns sustained damage yesterday in rough seas in the deep-water Gulf of Mexico.

Strike and AGL settle dispute

Australian duo Strike Energy and Australian Gasfields Ltd (AGL) have resolved issues which would have seen the latter turfed out of PEL 96 in the South Australian Cooper basin.

WHL, Ophir farm-in moves ahead

Australia’s WHL Energy has signed official documentation for the farm-in with Ophir Energy in the Seychelles to go ahead.

Second company accused of defrauding Citigroup

Oil services provider Evya is the second Mexican company implicated for having fraudulent loans linked to Citigroup, according to a spokesperson at state-owned Pemex.

Crude rises on Ukraine tension

Benchmark Brent oil rose slightly on Tuesday after news that Ukrainian armed forces launched military operations in the east of the country, though gains were limited by the prospect of a resumption of oil exports from Libya.


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...)