ARMSTRONG Field Activity and Well Summary

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Total wells

18
ARMSTRONG field

Drill activity

—
drill dates not in our copy of this source

The ARMSTRONG oil & gas field in Colorado contains 18 wells on file.

Top operators: BRITISH AMERICAN OIL PROD CO, BROWN* MARVIN R, and others.

Most recent well: HERBOLDSHEIMER, operated by ROUNDS CO* DON M — last updated March 2026.

ARMSTRONG field coverage

Counties the ARMSTRONG field intersects.

Saguache CountySedgwick CountyCheyenne CountyCuster CountyLa Plata CountySan Juan CountyPitkin CountyPark CountyAlamosa CountyProwers CountyMoffat CountyJefferson CountySummit CountyPueblo CountyBoulder CountyDenver CountyMontrose CountyEagle CountySan Miguel CountyCostilla CountyBroomfield CountyChaffee CountyCrowley CountyFremont CountyHuerfano CountyDelta CountyGarfield CountyRio Blanco CountyMorgan CountyLincoln CountyMontezuma CountyAdams CountyMineral CountyOtero CountyPhillips CountyOuray CountyBent CountyArchuleta CountyRoutt CountyHinsdale CountyWeld CountyLarimer CountyLake CountyRio Grande CountyGilpin CountyYuma CountyJackson CountyKit Carson CountyClear Creek CountyLogan — 18 wellsWashington CountyDouglas CountyConejos CountyEl Paso CountyKiowa CountyTeller CountyGunnison CountyBaca CountyElbert CountyMesa CountyDolores CountyArapahoe CountyLas Animas CountyGrand County
< 1818+18+18+18+

Recent wells

Well Name County Last activity Updates Operator API
HERBOLDSHEIMER Logan 2026-03-18 ROUNDS CO* DON M 05-075-07420
STATE Logan 2026-03-18 STUARCO OIL CO INC 05-075-06946
STRANGE Logan 2026-03-18 BRITISH AMERICAN OIL PROD CO 05-075-07016
SEGELKE Logan 2026-03-18 BRITISH AMERICAN OIL PROD CO 05-075-06986
LOWE R FOLSOM Logan 2026-03-18 BRITISH AMERICAN OIL PROD CO 05-075-07039
H J SEGELKE Logan 2026-03-18 BRITISH AMERICAN OIL PROD CO 05-075-06976
DJR DAVIS Logan 2026-03-18 DJ RESOURCES INC 05-075-09374
A B ROPER Logan 2026-03-18 ROPER* A B 05-075-40094
PROPST Logan 2026-03-18 BRITISH AMERICAN OIL PROD CO 05-075-06936
A B ROPER ET AL Logan 2026-03-18 PFEIFER* W R 05-075-08163

Top Operators in the ARMSTRONG field by total wells

BRITISH AMERICAN OIL PROD CO7BROWN* MARVIN R1CENTENNIAL PETROLEUM INC1DJ RESOURCES INC1KIMBARK OIL & GAS COMPANY1OKMAR OIL CO1PFEIFER* W R1RAYMOND OIL COMPANY INC1ROPER* A B1ROUNDS CO* DON M1

Operators: British American Oil Prod Co, Brown* Marvin R, Centennial Petroleum Inc, Dj Resources Inc, Kimbark Oil & Gas Company, Okmar Oil Co, Pfeifer* W R, Raymond Oil Company Inc, Roper* A B, Rounds Co* Don M.

Counties Intersected by the ARMSTRONG field

Logan18
Logan

Other Major Fields in Colorado most active by total wells

Compare the ARMSTRONG field against the other busiest oil and gas fields in Colorado: