SIOUX Field Activity and Well Summary

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Total wells

11
SIOUX field

Drill activity

—
drill dates not in our copy of this source

The SIOUX oil & gas field in Colorado contains 11 wells on file.

Top operators: WALSH* FRANK H, PETRO-CANADA RESOURCES (USA) INC, and others.

Most recent well: MILLER, operated by WALSH* FRANK H — last updated March 2026.

SIOUX field coverage

Counties the SIOUX 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 CountyWashington — 11 wellsDouglas CountyConejos CountyEl Paso CountyKiowa CountyTeller CountyGunnison CountyBaca CountyElbert CountyMesa CountyDolores CountyArapahoe CountyLas Animas CountyGrand County
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Recent wells

Well Name County Last activity Updates Operator API
MILLER Washington 2026-03-18 WALSH* FRANK H 05-121-08349
W H MILLER Washington 2026-03-18 TOLTEK DRILLING CO 05-121-07111
Q E VANCE Washington 2026-03-18 WALSH* FRANK H 05-121-08094
AGNAS FRIEDLY Washington 2013-05-15 FRITZLER RESOURCES INC 05-121-11023
MILLER *W H Washington 1999-01-01 PETRO-CANADA RESOURCES (USA) INC 05-121-07110
PEDERSEN Washington 1999-01-01 PETRO-CANADA RESOURCES (USA) INC 05-121-09083
JEFFERSON Washington 1983-11-01 THREE STATE WELL SERVICE INC 05-121-09975
O'NEIL Washington 1979-07-23 PADCO LLC 05-121-09444
JEFFERSON Washington 1978-11-11 JEFFERSON* MARVIN K 05-121-09385
PEDERSEN-STATE Washington 1978-06-01 WALSH* FRANK H 05-121-09331

Top Operators in the SIOUX field by total wells

WALSH* FRANK H4PETRO-CANADA RESOURCES (USA) INC2PADCO LLC1FRITZLER RESOURCES INC1THREE STATE WELL SERVICE INC1TOLTEK DRILLING CO1JEFFERSON* MARVIN K1

Operators: Walsh* Frank H, Petro-Canada Resources (Usa) Inc, Padco Llc, Fritzler Resources Inc, Three State Well Service Inc, Toltek Drilling Co, Jefferson* Marvin K.

Counties Intersected by the SIOUX field

Washington11
Washington

Other Major Fields in Colorado most active by total wells

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