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SPENCE DOME Field Activity and Well Summary

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Total wells

120
SPENCE DOME field

Drill activity

—
drill dates not in our copy of this source

The SPENCE DOME oil & gas field in Wyoming contains 120 wells on file.

Top operators: ENDEAVOR ENERGY LLC, PACIFIC WESTERN OIL COMPANY, and others.

Most recent well: SPENCE DOME #75, operated by ENDEAVOR ENERGY LLC — last updated March 2026.

SPENCE DOME field coverage

Counties the SPENCE DOME field intersects.

Lincoln CountyFremont CountyUinta CountyBig Horn — 120 wellsHot Springs CountyWashakie CountyConverse CountySweetwater CountyCrook CountyCarbon CountyCampbell CountyNatrona CountyLaramie CountyPlatte CountyWeston CountyAlbany CountyPark CountyJohnson CountySheridan CountyNiobrara CountyTeton CountySublette CountyGoshen County
< 120120+120+120+120+

Recent wells

Well Name County Last activity Updates Operator API
SPENCE DOME #75 Big Horn 2026-03-18 ENDEAVOR ENERGY LLC 321531
SPENCE DOME #77 Big Horn 2026-03-18 ENDEAVOR ENERGY LLC 321541
SPENCE DOME #79 Big Horn 2026-03-18 ENDEAVOR ENERGY LLC 321648
SPENCE DOME #78 Big Horn 2026-03-18 ENDEAVOR ENERGY LLC 321542
SPENCE DOME #85 Big Horn 2026-03-18 ENDEAVOR ENERGY LLC 321647
1-A Big Horn 2026-03-18 MISSOURI NEBRASKA WY DEVEL AND MINING CO 307182
SPENCE DOME #71 Big Horn 2026-03-18 ENDEAVOR ENERGY LLC 321535
SPENCE DOME #76 Big Horn 2009-03-02 ENDEAVOR ENERGY LLC 321540
SPENCE DOME #92 Big Horn 2008-01-30 ENDEAVOR ENERGY LLC 321589
SPENCE DOME #72 Big Horn 2001-10-16 ENDEAVOR ENERGY LLC 321534

Top Operators in the SPENCE DOME field by total wells

ENDEAVOR ENERGY LLC82PACIFIC WESTERN OIL COMPANY7NAVAJO DEVELOPMENT4BP AMERICA PRODUCTION COMPANY3ALDERDICE G W3HUSKY OIL COMPANY2WILEY G O2ELITE OIL1CHICKAWA OIL1GRIFFITH A1

Operators: Endeavor Energy Llc, Pacific Western Oil Company, Navajo Development, Bp America Production Company, Alderdice G W, Husky Oil Company, Wiley G O, Elite Oil, Chickawa Oil, Griffith A.

Counties Intersected by the SPENCE DOME field

Big Horn120
Big Horn

Other Major Fields in Wyoming most active by total wells

Compare the SPENCE DOME field against the other busiest oil and gas fields in Wyoming:

  • Wc · 76,411 wells
  • Prb Coal Bed · 46,479 wells
  • Pinedale · 5,251 wells
  • Salt Creek · 4,822 wells
  • Jonah · 3,451 wells
  • Osage · 2,266 wells
  • Crossbow · 1,471 wells
  • Siberia Ridge · 1,453 wells
  • Teapot Naval Reserve · 1,424 wells
  • Echo Springs · 1,063 wells

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