Although this will incur additional expenditures, earlier savings are expected to keep the total project within the approved figure.
The ministry's announcement follows Norway's parliamentary elections this week where climate change and the future of the country's oil industry were major topics of debate.
The work follows a successful four well offshore drilling campaign that Halliburton previously executed in the Karish and Karish North gas fields.
Exxon Mobil also announced the Liza Unity FPSO vessel to be utilized for the Liza Phase 2 development set sail from Singapore to Guyana in early September.
Troll phase 3 is "one of the most profitable projects throughout Equinor’s entire history" with record-low CO2 emissions, a senior company executive said.
Once onstream, production from Shenandoah is expected to catapult Beacon Offshore Energy from its current position as the 20th-largest producer in the U.S. Gulf of Mexico to the 10th spot, says Wood Mackenzie analyst Mfon Usoro.
CNPC said it aims to produce 1 million tonnes of oil annually by 2025 from the Gulong shale oil formations at Daqing in northeast China's Heilongjiang province.
Duva is expected to flow for a decade, supporting extended use of the Gjoa platform.
In November 2019, talks tied to a $13 billion expansion of the country's LNG exports fell apart with the government saying Exxon was unwilling to negotiate on the country’s terms.