SIERRA Field Activity and Well Summary

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Total wells

98
SIERRA field

Drill activity

—
drill dates not in our copy of this source

The SIERRA oil & gas field in Colorado contains 98 wells on file.

Top operators: MESA VERDE DRILLING, WRIGHT* ROBERT L, and others.

Most recent well: GLENN SMITH, operated by IMPERIAL-AMERICAN MNGT CO — last updated March 2026.

SIERRA field coverage

Counties the SIERRA 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 — 98 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
GLENN SMITH Montezuma 2026-03-18 IMPERIAL-AMERICAN MNGT CO 05-083-06038
KENT Montezuma 2026-03-18 MESA VERDE DRILLING 05-083-06273
WEBER Montezuma 2026-03-18 WRIGHT* ROBERT L 05-083-06451
DUDDLESON Montezuma 2026-03-18 WRIGHTS DRILLING 05-083-05186
WEBER Montezuma 2026-03-18 WRIGHT* ROBERT L 05-083-06452
ELLIS Montezuma 2026-03-18 ENERGY & CARBON MANAGEMENT COMMISSION 05-083-06035
FEDERAL-VANCE Montezuma 2026-03-18 MESA VERDE DRILLING 05-083-06032
Hackathorn Montezuma 2026-03-18 WOOSLEY OIL CO 05-083-06734
DUDDLESTON Montezuma 2026-03-18 WRIGHT* ROBERT L 05-083-06423
JOHN MCCORMICK Montezuma 2026-03-18 MCCORMICK OIL & GAS, INC 05-083-06558

Top Operators in the SIERRA field by total wells

MESA VERDE DRILLING23WRIGHT* ROBERT L19DICKINSON EXPLORATION16POINT LOOKOUT DRILLING12HARLAN DRILLING CO7ENERGY & CARBON MANAGEMENT COMMISSION4KENT & WOOSLEY4WOOSLEY OIL CO3MCCORMICK OIL & GAS, INC2WRIGHTS DRILLING2

Operators: Mesa Verde Drilling, Wright* Robert L, Dickinson Exploration, Point Lookout Drilling, Harlan Drilling Co, Energy & Carbon Management Commission, Kent & Woosley, Woosley Oil Co, Mccormick Oil & Gas, Inc, Wrights Drilling.

Counties Intersected by the SIERRA field

Montezuma98
Montezuma

Other Major Fields in Colorado most active by total wells

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