Norway's Statoil said part of its newly discovered Aldous Major South field in the North Sea is twice as large as first thought, raising its estimate as much as 3.3 billion boe.

About 1.45 trillion bbl of shale oil is estimated to be in place in the Eocene Green River formation in the Green River and Washakie basins in southwestern Wyoming, the US Geological Survey said.

A group led by Statoil ASA has confirmed a northern extension of the Aldous Major South structure in the North Sea off Norway.

Gaffney, Cline & Associates (GCA) said Turkmenistan’s South Iolotan natural gas field is the world’s second-largest, with an estimated 21.2 trillion cu m (tcm) of gas reserves.

Anadarko Petroleum Corp. said its latest exploratory well off Mozambique found 140 net ft of gas pay in Miocene and Oligocene sand packages shallower than those in earlier wells and boosted its view of the resource potential of Offshore Area 1 to at least 10 tcf of gas.

GDF Suez E&P UK has taken a step toward development of its large Cygnus natural gas discovery in the southern gas basin of the UK North Sea.

Clontarf Energy PLC sees potential for increased activity in Bolivia, where the company or its affiliates own interests in Monteagudo oil and gas field and El Dorado gas-condensate field in the Chaco basin.

Apache North Sea Ltd., a subsidiary of Houston independent Apache Corp., has agreed to acquire ExxonMobil Corp.’s Mobil North Sea LLC assets, which includes Beryl field and related properties, for $1.75 billion.

Vaalco Energy (USA) Inc., Houston, will drill three wells to the Bakken and deeper formations in the East Poplar and Northwest Poplar units in Roosevelt County, Mont., under an agreement with a subsidiary of Magellan Petroleum Corp., Portland, Me.

Newly founded Vallares, an investment vehicle headed by former BP Chief Executive Tony Hayward, announced a $2.1 billion deal to purchase Genel Energy International, the biggest oil producer in Iraq's autonomous Kurdistan region.

Lebanon warned the United Nations that Israel's proposed maritime border threatens peace and security, as the two East Mediterranean nations spar over offshore oil and gas reserves.

A successful appraisal well in a previously untested northern segment of Mad Dog field in the US Gulf of Mexico has hiked the complex’s resource to as much as 4 billion bbl of oil equivalent in place, rivaling that of Thunder Horse, said BP PLC.