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Green River Basin Formation in Wyoming

3,757 wells across 567 active operators, with 194 drilling permits filed in the last 24 months.

Refreshed monthly from WOGCC well-header records. Data current as of 2026-08-23.

Quick answer: The Green River Basin formation in Wyoming has 3,757 wells on record across 567 active operators, with 194 drilling permits filed in the last 24 months (as of 2026-08-23). Its most active operators by well count are Urban Oil & Gas Group, Amplify Energy Operating, EOG Resources, Chevron and Wexpro Company. Compiled from Wyoming Oil & Gas Conservation Commission (WOGCC) well-header records, refreshed monthly.

Total Wells
3,757
Active Operators
567
Total Lateral
220 miles
Permits (24mo)
194

Top Operators in the Green River Basin (Wyoming)

The operators with the most well counts targeting the Green River Basin formation in Wyoming:

#OperatorWells in Green River Basin
1 Urban Oil & Gas Group 301
2 Amplify Energy Operating 267
3 Eog Resources 202
4 Chevron 156
5 Wexpro Company 144
6 Purewest Resources INC 127
7 Hilcorp Energy Company 126
8 Marathon Oil Company 114
9 Crowheart Energy 104
10 Atlantic Richfield Company 96

Primary Wyoming Counties for the Green River Basin

The Wyoming counties with the most Green River Basin activity:

Carbon, Sublette, Sweetwater, Albany, Lincoln

Recent Green River Basin Drilling Permits in Wyoming

The most recent 3 drilling permits filed for Green River Basin wells in Wyoming:

Permit DateWellAPICountyOperatorLateral (ft)
2026-02-10 Bull Draw 11-8-28-107 1h 49035313410000 Sublette Wesco Operating
2025-07-29 Usgs Hanna Draw 2 2 49007249600000 Carbon U S Geological Survey
2025-07-15 Table Rock Unit 173h 49037330690000 Sweetwater Hilcorp Energy Company

Green River Basin DUCs (Drilled, Uncompleted Wells) in Wyoming

Wells targeting the Green River Basin that have been spudded but are waiting on completion — near-term production upside:

Spud DateDays WaitingWellOperatorCountyLateral (ft)
2026-08-08 14 Miss Marple Fed 2193 3427 2mh Crowheart Energy Sweetwater
2026-08-08 14 Miss Marple Fed 2193 3427 1mh Crowheart Energy Sweetwater
2026-08-08 14 Miss Marple Fed 2193 3427 3mh Crowheart Energy Sweetwater
2026-08-07 15 Boulder 7c1-17d Purewest Resources INC Sublette
2026-07-01 52 East Echo Springs 9-21-1lh Crowheart Energy Carbon
2026-07-01 52 East Echo Springs 9-21-2lh Crowheart Energy Carbon
2026-06-26 57 Mesa 15c1-19d Purewest Resources INC Sublette
2026-05-15 99 Mesa 13c1-18d Purewest Resources INC Sublette

About the Green River Basin Formation in Wyoming

The Green River Basin is one of Wyoming's active oil and gas plays, with 3,757 wells on file across 567 distinct operators of record. Operators have filed 194 drilling permits targeting the Green River Basin in the last 24 months — a measure of how active the play is right now versus its historical baseline.

For mineral owners with interests in Carbon, Sublette, Sweetwater, Albany, Lincoln, knowing whether your tract sits within an active Green River Basin footprint is a foundational valuation question. Active formations with consistent permit flow command premium pricing; legacy formations with steady but declining production are valued differently.

See all Wyoming oil & gas formations & plays  ·  Download the Wyoming formations dataset (CSV)

Frequently Asked Questions

How many wells target the Green River Basin formation in Wyoming?

3,757 wells target the Green River Basin in Wyoming, worked by 567 active operators, per WOGCC well-header records (as of 2026-08-23).

Who are the top operators in the Green River Basin in Wyoming?

By well count, the most active Green River Basin operators in Wyoming are Urban Oil & Gas Group, Amplify Energy Operating, EOG Resources, Chevron and Wexpro Company. The full ranking is in the table on this page.

How active is the Green River Basin formation right now?

Operators filed 194 drilling permits targeting the Green River Basin in the last 24 months, and there are 8 drilled-but-uncompleted (DUC) wells awaiting completion — a live measure of current activity, per WOGCC records.

Is there active drilling in the Green River Basin in Wyoming?

Operators filed 194 new drilling permits targeting the Green River Basin in Wyoming over the last 24 months, with 8 drilled-but-uncompleted (DUC) wells awaiting completion. New permits and spuds are the clearest signal of active Green River Basin drilling, per WOGCC records (as of 2026-08-23).

What is the current Green River Basin activity in Wyoming?

Green River Basin activity in Wyoming currently spans 3,757 wells on record and 567 active operators, led by Urban Oil & Gas Group, Amplify Energy Operating, EOG Resources, Chevron and Wexpro Company, with 194 drilling permits filed in the last 24 months — refreshed monthly from Wyoming Oil & Gas Conservation Commission (WOGCC) well-header records (as of 2026-08-23).

Which Wyoming counties have the most Green River Basin activity?

The most active Green River Basin counties in Wyoming are Carbon, Sublette, Sweetwater, Albany, Lincoln.

How do I find out what my Green River Basin mineral rights are worth?

Value depends on your net mineral acres or royalty decimal, the operator, the remaining drilling locations, and current oil and gas prices. Buckhead Energy checks your tract against current Green River Basin well and permit data and puts a free, no-obligation written offer in writing — this page is informational only, not a valuation.

Cite this dataset

Permanently archived and citable via a DOI on Zenodo (CERN), under a CC BY 4.0 license. DOI: 10.5281/zenodo.21442884  ·  View on Zenodo

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License & attribution: This data is licensed CC BY 4.0. You are free to share and adapt it, including commercially, provided you credit “Buckhead Energy” and link back to this page or the DOI above.

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Quick Stats

Formation: Green River Basin

State: Wyoming

Total wells: 3,757

Active operators: 567

Permits 24mo: 194

Last refresh: 2026-08-23

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