MARBLE WASH Field Activity and Well Summary

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Total wells

27
MARBLE WASH field

Drill activity

—
drill dates not in our copy of this source

The MARBLE WASH oil & gas field in Colorado contains 27 wells on file.

Top operators: MONSANTO OIL CO, RED MOUNTAIN ENERGY LLC, and others.

Most recent well: UTE B, operated by MONSANTO OIL CO — last updated March 2026.

MARBLE WASH field coverage

Counties the MARBLE WASH 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 — 27 wellsAdams CountyMineral CountyOtero CountyPhillips CountyOuray CountyBent CountyArchuleta CountyRoutt CountyHinsdale CountyWeld CountyLarimer CountyLake CountyRio Grande CountyGilpin CountyYuma CountyJackson CountyKit Carson CountyClear Creek CountyLogan CountyWashington CountyDouglas 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
UTE B Montezuma 2026-03-18 MONSANTO OIL CO 05-083-06007
CALCO-SUPERIOR UTE TRIBAL Montezuma 2026-03-18 BHP PETROLEUM CO INC 05-083-05102
UTE 76 Montezuma 2026-03-18 CHAMPLIN PETROLEUM COMPANY 05-083-06026
UTE TRIBAL Montezuma 2026-03-18 BHP PETROLEUM (AMERICAS) INC 05-083-06425
CHAMPLIN-CALIFORNIA UTE TRIBAL Montezuma 2026-03-18 CHAMPLIN OIL & REFINING CO 05-083-05138
MARBLE WASH Montezuma 2026-03-18 RED MOUNTAIN ENERGY LLC 05-083-06619
UTE AB Montezuma 2026-03-18 MONSANTO OIL CO 05-083-06008
UTE AB Montezuma 2026-03-18 MONSANTO OIL CO 05-083-06015
CALCO-UTE Montezuma 2026-03-18 MERRION OIL & GAS CORP 05-083-06444
CHEVRON UTE TRIBAL Montezuma 2026-03-18 CHEVRON USA INC 05-083-07002

Top Operators in the MARBLE WASH field by total wells

MONSANTO OIL CO6RED MOUNTAIN ENERGY LLC5RIM OPERATING INC4MERRION OIL & GAS CORP2SAMSON RESOURCES COMPANY2CHEVRON USA INC1BHP PETROLEUM (AMERICAS) INC1MCELVAIN ENERGY INC1DUNCAN OIL INC1BHP PETROLEUM CO INC1

Operators: Monsanto Oil Co, Red Mountain Energy Llc, Rim Operating Inc, Merrion Oil & Gas Corp, Samson Resources Company, Chevron Usa Inc, Bhp Petroleum (Americas) Inc, Mcelvain Energy Inc, Duncan Oil Inc, Bhp Petroleum Co Inc.

Counties Intersected by the MARBLE WASH field

Montezuma27
Montezuma

Other Major Fields in Colorado most active by total wells

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