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

Noble Energy profit drops

Net profit sank at US independent Noble Energy in the first quarter despite a rise in output.

DECC backs shale emissions monitoring

The UK government has endorsed the findings of an expert report that sought new research, better monitoring and greater use of new technology to limit the greenhouse gas emissions impact of shale gas.

Patterson-UTI profit tumbles 38%

Onshore driller Patterson-UTI Energy reported net income of $34.8 million for the first quarter, down 38% compared to the same period last year as weather impacted operations.

H&P inks rig orders, ups capex

Helmerich & Payne (H&P) has ordered a plethora of new land rigs after tying up multi-year deals with a host of oil companies.

Diamond drops in Q1

Profit slumped at US rig owner Diamond Offshore Drilling in the first quarter as revenues waned and costs were on the rise.

Argentina parliament 'backs Repsol deal'

The Argentinean parliament has approved the $5 billion compensation deal reached with Spain’s Repsol over the expropriation of re-nationalised oil company YPF, reports have said.

Report points to UK shale supply prize

The UK government and industry need to encourage investment, set common supply standards and fill a skills gap to take advantage of a budding shale supply chain that could generate more than 64,000 jobs, a new analysis has found.

Leni opts against MOG appeal

Leni Gas & Oil (LGO) has decided not to pursue Mediterranean Oil & Gas (MOG) further through the courts after recently losing a suit over a farm-out deal.

Repsol spins Namibian bit

Spanish giant Repsol has finally started drilling the Welwitschia-1 wildcat on PEL 0010 off Namibia.

Tethys hits Kazakhstan pay

Dual-listed Tethys Petroleum has intersected a massive pay zone in the AKK19 well in Kazakhstan - the company’s third successful well in the country.

TGS gathers Barents seismic

Norwegian seismic player TGS has kicked off two new projects in the Barents Sea aimed at providing more data prior to the closing of the 23rd Norwegian licensing round.

Technip profit slumps

French contracting company Technip has posted a massive loss in quarter-on-quarter income, despite a jump in revenue.

Oil Search makes KRG find

Australia-listed Oil Search has found hydrocarbons in the Taza-2 well in the Kurdistan Region of Iraq.

Brent rises on Ukraine tension

Brent futures rose on Thursday as Russia vowed to respond if its interests in Ukraine came under attack, stoking fears of an escalation in tensions that have pushed the oil benchmark up 5% this month to hover above $109 a barrel.

Explosion shuts down gas processing facility

An explosion has rocked a Williams Partners-operated gas processing facility in Lincoln County, near the town of Opal in the US state of Wyoming.

CNOOC Ltd offers $4bn bonds

The overseas arm of state-run China National Offshore Oil Corporation (CNOOC) is offering $4 billion worth of bonds to help repay loans related to its takeover of Canada’s Nexen last year.

Kentz wins $125m Kuwait deal

London-listed Kentz has won a $125 million contract for work in Kuwait with Texas-based Fluor.

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 starts Philippines farm-out

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).

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...)