Eni US Operating Co., Inc. - 2017 Beaufort Sea EP


Eni US is a subsidiary of Italian multinational oil and gas company Eni S.p.A. In its plan, Eni proposes to drill into the federal submerged lands of the Beaufort Sea from their Spy Island Drillsite, a pre-existing facility located on an artificial gravel island in Alaska state waters.


Apr 29 BOEM sent Eni US a letter regarding Harrison Bay Block 6423 Unit
Apr 03

On April 3, 2022, the following leases, formerly included in the Harrison Bay Block 6423 Unit, expired: OCS-Y-01703, OCS-Y-01704, OCS-Y-01705, OCS-Y-01751, OCS-Y-01752, OCS-Y-01753, OCS-Y-01754, OCS-Y-01756, OCS-Y-01757, OCS-Y-01771, OCS-Y-01772, OCS-Y-01779, and OCS-Y-01780

Apr 13

BOEM approves a revision to Eni's Beaufort Sea exploration plan (EP). This revision modifies the Beaufort Sea EP (approved by BOEM on July 12, 2017). It authorizes Eni to continue well operations during Summer 2018, while drilling above the hydrocarbon zone in well NN01, and to enter hydrocarbon bearing formations only from July 15 to Sept. 15, 2018. It also reduces the number of wells to two mainbores and one sidetrack.

Jul 12

After a comprehensive review and consideration of comments received from the public, stakeholders, and federal and state partner agencies and tribes, BOEM conditionally approves Eni US Operating Co. Inc.'s Beaufort Sea Exploration Plan, which had been deemed submitted June 12, 2017.

Jul 7

Eni submits to BOEM the following errata from its exploration plan.

Jul 3

End of 21-day public comment period on Eni's 2017 Beaufort Sea exploration plan. This commenting period is now closed. (See June 12 item, below.)

Jun 22

End of 10-day period for commenting on issues to be examined in the Environmental Assessment relating to ENI's exploration plan. This commenting period is now closed. The 21-day period for commenting on the EP itself remains open - see June 12 item, below.

Jun 15

Eni submits to BOEM a corrected page L-2 of their Exploration Plan. This correction updates table L-1, revising the number of 2018 estimated barge trips from 32 to 108.

Jun 12

BOEM deems submitted an exploration plan it received from Eni US Operating Co., Inc.

BOEM now has 30 calendar days to evaluate the EP in accordance with federal law and regulations. This evaluation will include a site-specific Environmental Assessment (EA) of the proposed exploration activities pursuant to the National Environmental Policy Act. By the end of the 30-day period BOEM may approve the EP, require modifications to the EP, or disapprove the EP.

Deeming the EP submitted initiates two separate (but partially concurrent) public comment periods:

  • A 10-day period (closing at 11:59 p.m. Eastern Time on Thursday, June 22) to provide information on issues that should be examined in the Environmental Assessment; and
  • A 21-day period (closing at 11:59 p.m. Eastern Time on Monday, July 3) to comment on the Exploration Plan itself.