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ST MARY OPERATING COMPANY Wells and Activity Summary

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Total wells

23
ST MARY OPERATING COMPANY

Most recent drilling

May 1992
~34 years ago

First on record

1961
records span 30 years

Activity status

Historic
no recent drilling
News & deals Company family Coverage map Recent wells Counties Fields

Industry news recent coverage mentioning St Mary Land Exploration Company

  • Why $90 Oil Isn’t Bringing Back the Rigs
    Apr 16, 2026
    Higher oil prices are not translating cleanly into a drilling response across U.S. shale, and company disclosures are starting to show why. The issue is not simply capital discipline. It is structural. A meaningful… Read full article on ShaleExperts →
  • These Three Companies Will Increase Drilling & Completion Over The Next 3 Year
    Apr 15, 2026
    In the span of fifteen months, three Japanese energy companies committed more than $10.3 billion to U.S. natural gas production assets — a buying spree that has transferred roughly 27% of Haynesville Shale output… Read full article on ShaleExperts →
  • Q1 A&D Transactions Jump to $30B , While Deal Flow Was Down 40%
    Apr 15, 2026
    The first quarter of 2026 has officially defined the "Barbell Era" of American oil and gas. While the total number of deals plummeted by 46% YoY (dropping to just 7 major transactions), the total deal value skyrocketed… Read full article on ShaleExperts →
  • Western Canada Upstream M&A: Q1 2026 Transaction Report
    Apr 11, 2026
    Western Canadian M&A activity in Q1 2026 was characterized by a 87% decrease in total deal value compared to Q1 2025, totaling $0.8 billion C$ . However, transaction volume remained resilient with a 150% increase in… Read full article on ShaleExperts →
  • Wright to U.S. Oil Industry: The Price Signal Is Telling You to Drill
    Mar 23, 2026
    Energy Secretary Chris Wright stood in front of the largest gathering of oil executives in the world this morning and delivered a message that was equal parts market economics and wartime urgency: the price spike is… Read full article on ShaleExperts →

⚑ Same company across states: St Mary Land Exploration Company

HQ: Denver, Colorado

Curated alternate names for St Mary Land Exploration Company (from ShaleExperts company records):

  • ST MARY LAND & EXPLORATION CO, ST MARY LAND & EXPLORATION COMPANY, ST MARY OPERATING CO

ST MARY OPERATING COMPANY has 23 wells on file in Wyoming.

Active in 5 counties — concentrated in Campbell, Crook, and Carbon.

Most recent well: 10-1 in the WC field (Carbon county) — last updated March 2026.

ST MARY OPERATING COMPANY county coverage

Counties where ST MARY OPERATING COMPANY has wells. Click any county for its local activity.

Lincoln CountyFremont — 1 wellsUinta CountyBig Horn CountyHot Springs CountyWashakie CountyConverse — 1 wellsSweetwater CountyCrook — 3 wellsCarbon — 3 wellsCampbell — 15 wellsNatrona CountyLaramie CountyPlatte CountyWeston CountyAlbany CountyPark CountyJohnson CountySheridan CountyNiobrara CountyTeton CountySublette CountyGoshen County
< 11+3+3+15+

Recent wells

Well Name County Last activity Updates API
10-1 Carbon 2026-03-18 721184
2-2 Carbon 2026-03-18 721179
2-1 Carbon 2026-03-18 721178
4-20 Campbell 2026-03-18 529632
3-29 Campbell 2026-03-18 530300
3A Campbell 2026-03-18 530916
1-29 Campbell 1992-05-22 530342
2-29 Campbell 1992-01-07 530281
2-24 Campbell 1990-12-25 530096
12-7 Campbell 1990-07-02 529924

Counties Worked by total wells in Wyoming

Campbell15Crook3Carbon3Fremont1Converse1

Counties: Campbell, Crook, Carbon, Fremont, Converse.

Top Oil & Gas Fields worked by ST MARY OPERATING COMPANY by total wells

WC10BIG HAND4ROCK CREEK2DEAD HORSE CREEK2PRB COAL BED1CHAN1STEINLE RANCH1TRIANGLE U1HARTZOG DRAW1

Fields: Wc, Big Hand, Rock Creek, Dead Horse Creek, Prb Coal Bed, Chan, Steinle Ranch, Triangle U, Hartzog Draw.

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