Drilled in 2,003 m (6,572 ft) of water by the Noble Tom Madden drillship, the Tripletail-1 well hit about 33 m of high-quality oil-bearing sandstone reservoir, Exxon Mobil said.
Although the discovery was smaller than initially estimated, it offers Tullow and its partners better understanding of the block to decide on further exploration drilling and development of production, Tullow CEO Paul McDade said.
While few parts of the Arctic are seeing an uptick in exploration activity, most countries are making slow progress.
The latest gas discovery was made by the West Erregulla-2 well in the High Cliff sandstone where a gas column of at least 22 m was encountered, Strike Energy said in a news release.
The Annie gas discovery marks the first made by an offshore well in the basin in 11 years, according to Cooper Energy.
Check out the activity highlights from E&P projects across the world.
An oil column of about 45 m underlying a gas column of about 20 m in the Kirkham Abbey interval was identified during initial petrophysical evaluation, the company said.
The new field in the Adar area of the state contains 5.3 million barrels of recoverable oil and will be linked to the nearby Paloch oil fields, which are operated by Dar Petroleum Operating Co., the minister Awow Daniel Chuang said.
The well, drilled to a vertical depth of 1,569 m below the seabed by the West Hercules semisubmersible rig, encountered a 15-m oil column in a Triassic sandstone reservoir, Equinor said in a news release.
Drilled by the Leiv Eiriksson semi-submersible drilling rig, the well encountered weathered and fractured basement in an estimated 20-m oil column, Lundin Petroleum said in a news release.