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National Petroleum Reserve in Alaska

Cover image for article: State catalogs 1970s drill notes from 26,000 NPR-A holes to help find North Slope gravel

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State catalogs 1970s drill notes from 26,000 NPR-A holes to help find North Slope gravel

by Cale Green · draft by Maggie AlaskaNews(1w ago)
2 min readNational Petroleum Reserve-Alaska

The state has released an updated catalog of notes and photos from about 26,000 holes drilled for federal seismic surveys across the National Petroleum Reserve-Alaska in the 1970s, to help find sand and gravel and plan infrastructure on the North Slope.

The Alaska Division of Geological & Geophysical Surveys says the records are a regional picture of what lies just below the tundra, one that "would be cost prohibitive to replicate," according to the catalog's description.

Gravel matters on the North Slope. Oil development there is built on it, and Hilcorp said in September the region is running short.

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October 2026

Narwhal Exploration seeks state approval to drill up to three wells in West Harrison Bay

Narwhal Exploration wants to drill up to three oil wells from ice pads in Harrison Bay this winter, a year later than first planned. Comments are due Oct. 30.

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Interior lets BLM skip environmental assessments for qualifying NPR-A winter exploration

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September 2026

Written comments on Willow drilling and injection rules are due Tuesday unless a Nov. 4 hearing is held

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ConocoPhillips' Disclosed Alaska Royalties Fell 58% in Two Years

ConocoPhillips paid $37.97 million in royalties on its federal Alaska leases last year, down 58 percent from 2023, partly on lower oil prices.

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BLM Rule Would Cut NPR-A Pad Approvals to 60 Days, Limit Hunting

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August 2026

Heat advisory warns of 80 degrees near Umiat Sunday afternoon

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June 2026

A federal royalty-rule change could shortchange the states and tribes it's owed to

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May 2026

Federal appeals court clears Alaska to release NPR-A drilling data

A federal appeals court ruled Alaska can release ConocoPhillips exploration well data from the National Petroleum Reserve-Alaska after the state's confidentiality period expires, rejecting the company's claim that federal law blocked disclosure.

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About National Petroleum Reserve in Alaska

The National Petroleum Reserve in Alaska (NPR-A) is a federal reserve on the western North Slope, managed by the Bureau of Land Management. It holds the Teshekpuk Lake special area and the Willow oil project, and lies near Nuiqsut and other North Slope communities.

The BLM decides where and how oil and gas can be leased, explored and developed in the reserve, and how much environmental review each step needs. Recurring questions include rules to speed approval of drilling pads near existing infrastructure, waivers of conditions that protect subsistence hunting, lease sales and the release of exploration well data.

ConocoPhillips explores and develops oil in the reserve, linking it to the North Slope's existing fields. Nearby villages, Nuiqsut among them, hunt across the reserve, and the BLM's own analyses weigh how development would affect that subsistence hunting.

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