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Diamond Shamrock Corporation Wells and Activity Summary

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Total wells

14
Diamond Shamrock Corporation

Most recent drilling

Apr 1984
~42 years ago

First on record

1971
records span 12 years

Activity status

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

Industry news recent coverage mentioning Diamond Shamrock Corporation

  • 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 →

Diamond Shamrock Corporation has 14 wells on file in Montana.

Active in 7 counties — concentrated in Richland, Toole, and Pondera.

Most recent well: Sjostrom 33-17 (Richland county) — last updated April 1984.

Diamond Shamrock Corporation county coverage

Counties where Diamond Shamrock Corporation has wells. Click any county for its local activity.

Musselshell CountyChouteau CountyMeagher CountyRosebud CountySweet Grass CountyLewis and Clark CountyPondera — 2 wellsGarfield — 1 wellsCarter — 1 wellsGallatin CountyLiberty CountySilver Bow CountyCascade CountyFlathead CountyFergus CountyBroadwater CountyBig Horn CountySanders CountyLincoln CountyGranite CountyCuster CountyRichland — 4 wellsWibaux CountyGolden Valley CountyCarbon CountyToole — 3 wellsBlaine CountyJudith Basin CountyPowell CountyPark CountyRoosevelt — 2 wellsFallon — 1 wellsMcCone CountyStillwater CountyTeton CountyDawson CountyPowder River CountyGlacier CountyLake CountyHill CountyTreasure CountyMineral CountyYellowstone CountyJefferson CountyDeer Lodge CountyWheatland CountyRavalli CountyValley CountyPetroleum CountyPhillips CountyMissoula CountySheridan CountyDaniels CountyPrairie CountyMadison CountyBeaverhead County
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Recent wells

Well Name County Last activity Updates API
Sjostrom 33-17 Richland 1984-04-19 25083217090000
LUCKY JNES 1-18 Fallon 1983-11-03 25025212710000
Zupanik 1-6 Carter 1983-10-23 25011213220000
LAVERN 21-27 Roosevelt 1983-04-15 25085214130000
STATE 41-16 Pondera 1982-12-06 25073216500000
State 13-16 Richland 1981-03-11 25083214440000
Roedeske Fee 34-1 Richland 1980-07-15 25083213670000
Hill Fee 21-12 Richland 1979-07-04 25083213000000
UNDERDAHL<>12-4 Pondera 1978-09-22 25073212840000
UNDERDAL 31-21 Toole 1977-11-30 25101216380000

Counties Worked by total wells in Montana

Richland4Toole3Pondera2Roosevelt2Garfield1Fallon1Carter1

Counties: Richland, Toole, Pondera, Roosevelt, Garfield, Fallon, Carter.

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