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Rosneft and Statoil jointly started exploration drilling at the Pingvin Licence PL713 prospect in the Norwegian region of the Barents Sea.
The Transocean Spitsbergen rig is being used to drill the initial exploration well, Pingvin-1.
The Pingvin-1 well is being drilled to a total vertical depth of 1,516m with a water depth of 422m.
The project is producing 1.8 million cubic metres of gas per day and associated condensates of around 800 barrels per day.
The production commenced through the new Denise South 6 subsea well, which is the first development well of the project situated in the Temsah concession area, in the offshore Nile Delta, Egypt.
Energean Oil & Gas started a new $225m investment programme to develop 30 million barrels of reserves in Kavala, north-west Greece.
The company plans to increase output from the Prinos, Prinos North and Epsilon fields to 10,000 barrels per day by 2016.
Under the programme, Energean will drill 15 wells and install two new unmanned platforms for the Prinos North and Epsilon fields.
They will be tied back to the existing infrastructure the company currently operates.
Oil and gas explorer FAR confirmed oil samples in the FAN-1 exploration well, offshore Senegal.
Located on the North Fan prospect in 1,500m water depth, the well is being drilled by FAR and its joint venture partners Cairn Energy, ConocoPhillips and the Senegalese national oil firm Petrosen.
The well, which reached a depth of 4,402m, is being drilled further to a planned total depth of about 5,000m.
Norway-based geoscience data firm TGS acquired a 3D multi-client survey offshore Sierra Leone.
The survey, Sierra Leone Block 4A Extension, adds 1,000km² of new 3D data to the current 6,268km² 3D data library in the West African nation.
TGS Eastern Hemisphere senior VP Stein Ove Isaksen said: "This survey extends our current data coverage in an important and prospective area. TGS has been active in acquiring data over the West Africa Transform Margin for the past decade and we are pleased with the level of customer support to continue our investment in this region."
The Norwegian firm is chartering the 12-streamer Polarcus Alima for the survey, which will secure funding from the oil and gas industry. The company is carrying out data processing, which will be unveiled in the first-quarter of 2015.
Shell discovered more gas at its Marjoram-1 well, which is located 180km off the Malaysia coast in Block SK318.
The further exploration success followed a discovery in the same block earlier this year, when the Rosmari-1 well, about 135km off the Malaysian coast, encountered a gas column of over 450m.
Shell Upstream international director Andrew Brown said: "Our strategy to expand our heartland areas through technologically advanced exploration is delivering tangible success in deep-water in Malaysia."
Shell operates Block SK318 with an 85% stake while PETRONAS Carigali holds the remaining interest. Block SK318 is located approximately 200km offshore in water depths of 200m to 1,000m.
The US Department of the Interior (DOI) announced that the Western Gulf of Mexico lease-sale yielded almost $110m in high bids on more than 400,000 acres offshore Texas, US.
The lease-sale was part of President Barack Obama’s strategy to continue the expansion of domestic energy production.
The lease-sale 238 yielded $109.95m in high bids for 81 tracts covering 433,823 acres on the US Outer Continental Shelf offshore Texas, US.
The US Bureau of Ocean Energy Management (BOEM) issued an Advanced Notice of Proposed Rulemaking (ANPR) on changes to its offshore oil and gas regulations.
The agency is seeking public input to modernise its financial assurance and risk management programme in order to better address potential costs and liability of offshore oil and gas operations on the Outer Continental Shelf (OCS).
The initial step includes a dialogue on BOEM’s current regulations, which are about 20 years old and have not kept pace with offshore infrastructure projects, including deepwater operations, existing industry practices and the increasing costs of decommissioning.
Chevron Cambodia operates and holds a 30% participating interest in offshore Block A, which covers 4,709km² in the Khmer Basin in the Gulf of Thailand.
KrisEnergy previously held a 25% indirect participating interest in the block, which has been explored since the mid-2000s, resulting in the discovery of the Apsara oil field.
Australian energy firm Woodside acquired a 40% participating interest in an exploration, exploitation and production sharing contract (EEPSC) for Block F15 in the Gabon Coastal Basin.
Located 140km off the south-western coast of Gabon, Block F15 covers more than 2,700km², with water depths ranging from 2,300m to 3,000m.
Noble Energy operates the block with a 60% participating interest in the EEPSC, which has a four-year seismic commitment and a future option for exploration drilling.