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

Rex wraps up Trinidad acquisition

Rex International’s majority-owned subsidiary, Caribbean Rex, has gained a further 25% interest in the South Erin Block in Trinidad.

Nido completes first stage

Australia-listed Nido Petroleum has completed the first stage of its farm-out in the Philippines.

Diamond Offshore lands Vietnam gig

Diamond Offshore has signed its semi-submersible Ocean Quest to a 10-well contract off Vietnam for Petrovietnam Exploration & Production (PVEP).

Rowan Renaissance gets to work for Repsol

The newbuild drillship Rowan Renaissance has begun work for Spanish giant Repsol at a well off West Africa after a months-long delay in accepting the rig.

Oceaneering boosts profits

US subsea specialist Oceaneering boosted first-quarter profits on continued strong business for its remotely operated vehicle (ROV) segment.

Canada to move fast on rail car rules

Canada will require that the use of older rail cars for carrying crude be phased out within three years, even though the US has yet to make such a rule change, according to a report.

CB&I sales rocket

Infrastructure giant CB&I posted quarterly sales and revenue growth for a banner quarter that also saw the company land $5.8 billion in new contracts.

Jury awards family $3m in fracking suit

A privately held oil and gas outfit active in the Barnett shale of northern Texas faces a $3 million penalty after a jury found the company responsible for illnesses suffered by a local family.

Moscow to meet Ukraine for energy talks

European and Russian officials will meet this week and next for emergency talks to try to prevent Moscow cutting off gas supply to Ukraine, as Europe explores how to pump more gas to the struggling country, according to a report.

Hercules lands jack-up contracts

US rig contractor Hercules Offshore has penned two new contracts for US Gulf of Mexico jack-ups, underlining a strengthening market in the region.

CNOOC Ltd names new Nexen boss

China's CNOOC Ltd has named a company veteran to helm its Canadian subsidiary Nexen more than a year after it closed on a deal to buy the North American producer.

Pacific Rubiales impacted by pipeline attacks

Canadian producer Pacific Rubiales on Wednesday warned that a key Colombia field as well as operating costs were impacted in the first quarter by drought and pipeline attacks by militants.

Wessex rebel shareholders name nominees

The would-be ousters of the board of Wessex Exploration have revealed their four nominees to replace the current directors of the cash-strapped UK junior.

PSA: 'Show us Goliat back-up plan'

Eni reportedly has been asked by Norway’s safety agency to present a back-up plan for completion of the floating production unit for its Goliat oilfield in the Barents Sea amid concern over the mounting workload to finish construction of the vessel.

OMV lifts output by 3% in Q1

Austria’s OMV said it raised production by just under 3% year-on-year in the first quarter to 311,000 barrels of oil equivalent and by about 12% from the fourth quarter of 2013's output of 277,000 boepd.

UK offshore supply chain ‘worth $60bn’

The offshore oil and gas supply chain is worth an estimated £35 billion ($60 billion) per year to the UK economy, a major study has claimed.

Gulfport Energy promotes Moore to CEO

US shale explorer Gulfport Energy has appointed Micheal Moore as its chief executive following February’s retirement of long-time leader James Palm.

Rosneft ‘eyes Angola entry’

Russia’s Rosneft is sizing up a move into the Angolan market with prospective oil and gas basins possibly in the state-controlled giant’s sights.

RWE on Titan sidetrack

German explorer RWE Dea has kicked off drilling of a sidetrack at its Titan discovery in the northern North Sea off Norway after wrapping up an appraisal well at the find.

BP in $378m Shah Deniz 2 award

BP has handed Keppel Offshore & Marine and others a large contract to build a subsea construction vessel for the giant Shah Deniz 2 project in Azerbaijan.


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...)