Elk Basin Field Activity and Well Summary

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Total wells

125
Elk Basin field

Drill activity

—
drill dates not in our copy of this source

The Elk Basin oil & gas field in Montana contains 125 wells on file.

Top operators: Contango Resources, Inc., Amoco Production Company, and others.

Most recent well: Water Well 1, operated by Amoco Production Company — last updated March 2026.

Elk Basin field coverage

Counties the Elk Basin field intersects.

Musselshell CountyChouteau CountyMeagher CountyRosebud CountySweet Grass CountyLewis and Clark CountyPondera CountyGarfield CountyCarter CountyGallatin CountyLiberty CountySilver Bow CountyCascade CountyFlathead CountyFergus CountyBroadwater CountyBig Horn CountySanders CountyLincoln CountyGranite CountyCuster CountyRichland CountyWibaux CountyGolden Valley CountyCarbon — 125 wellsToole CountyBlaine CountyJudith Basin CountyPowell CountyPark CountyRoosevelt CountyFallon CountyMcCone 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
< 125125+125+125+125+

Recent wells

Well Name County Last activity Updates Operator API
Water Well 1 Carbon 2026-03-18 Amoco Production Company 25009064110000
EBET2 #390 Carbon 2018-02-01 Contango Resources, Inc. 25009213020000
Elk Basin Unit 384 Carbon 2011-08-03 Contango Resources, Inc. 25009212940000
Frontier 202 Carbon 2003-07-01 Contango Resources, Inc. 25009212780000
USA 35-1 Carbon 2001-10-08 Howell Petroleum Corp. 25009212690000
USA 34-10 Carbon 2001-09-19 Contango Resources, Inc. 25009212680000
USA 35-5 Carbon 2001-09-16 Contango Resources, Inc. 25009212700000
USA 34-3 Carbon 2001-09-09 Contango Resources, Inc. 25009212660000
USA 34-4 Carbon 2001-07-24 Contango Resources, Inc. 25009212670000
USA 34-2 Carbon 2001-07-02 Contango Resources, Inc. 25009212650000

Top Operators in the Elk Basin field by total wells

Contango Resources, Inc.81Amoco Production Company26Howell Petroleum Corp.5WBI Energy Transmission, Inc.4Encore Energy Partners Operating, LLC2Sha-Wa Petroleum1Stanolind Oil & Gas Co.1Zimmerman, Sid1Henderson Prod. Co.1Liberty Oil & Gas1

Operators: Contango Resources, Inc., Amoco Production Company, Howell Petroleum Corp., Wbi Energy Transmission, Inc., Encore Energy Partners Operating, Llc, Sha-Wa Petroleum, Stanolind Oil & Gas Co., Zimmerman, Sid, Henderson Prod. Co., Liberty Oil & Gas.

Counties Intersected by the Elk Basin field

Carbon125
Carbon

Other Major Fields in Montana most active by total wells

Compare the Elk Basin field against the other busiest oil and gas fields in Montana: