HOLSTER Field Activity and Well Summary

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Total wells

27
HOLSTER field

Drill activity

—
drill dates not in our copy of this source

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

Top operators: MCCARTNEY ENGINEERING LLC, EXTRACTION OIL & GAS INC, and others.

Most recent well: CHAMPLIN 117 AMOCO D, operated by MCCARTNEY ENGINEERING LLC — last updated March 2026.

HOLSTER field coverage

Counties the HOLSTER 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 — 27 wellsMineral 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
CHAMPLIN 117 AMOCO D Adams 2026-03-18 MCCARTNEY ENGINEERING LLC 05-001-06572
MCHUGH Adams 2026-03-18 NIGAS 05-001-07865
STATE OF COLORADO AB Adams 2026-03-18 MCCARTNEY ENGINEERING LLC 05-001-06474
MCHUGH Adams 2026-03-18 NIGAS 05-001-07866
CHAMPLIN 117 AMOCO I Adams 1999-02-01 KP KAUFFMAN COMPANY INC 05-001-08233
CHAMPLIN 117 AMOCO I Adams 1999-02-01 KP KAUFFMAN COMPANY INC 05-001-07535
PARD Adams 1999-01-01 ENERVEST OPERATING LLC 05-001-07671
STATE OF COLORADO AB Adams 1999-01-01 CARRIZO NIOBRARA LLC 05-001-06541
BOX ELDER FARMS 31-21 Adams 1999-01-01 EXTRACTION OIL & GAS INC 05-001-07399
BOX ELDER FARMS 41-21 Adams 1999-01-01 EXTRACTION OIL & GAS INC 05-001-06750

Top Operators in the HOLSTER field by total wells

MCCARTNEY ENGINEERING LLC4EXTRACTION OIL & GAS INC3NIGAS3AMOCO PRODUCTION COMPANY2CARRIZO NIOBRARA LLC2KP KAUFFMAN COMPANY INC2JORDAN* TOM1KOCH EXPLORATION COMPANY LLC1XO EXPLORATION INC1HOOKS BROTHERS OIL COMPANY1

Operators: Mccartney Engineering Llc, Extraction Oil & Gas Inc, Nigas, Amoco Production Company, Carrizo Niobrara Llc, Kp Kauffman Company Inc, Jordan* Tom, Koch Exploration Company Llc, Xo Exploration Inc, Hooks Brothers Oil Company.

Counties Intersected by the HOLSTER field

Adams27
Adams

Other Major Fields in Colorado most active by total wells

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