COW HOLLOW Field Activity and Well Summary
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Total wells
Drill activity
The COW HOLLOW oil & gas field in Wyoming contains 273 wells on file.
Top operators: HILCORP ENERGY COMPANY, BREITBURN OPERATING L.P., and others.
Most recent well: COW HOLLOW #41, operated by BANNON ENERGY INC — last updated March 2026.
COW HOLLOW field coverage
Counties the COW HOLLOW field intersects.
Recent wells
| Well Name | County | Last activity | Updates | Operator | API |
|---|---|---|---|---|---|
| COW HOLLOW #41 | Lincoln | 2026-03-18 | BANNON ENERGY INC | 2320990 | |
| COW HOLLOW #40 | Lincoln | 2026-03-18 | BANNON ENERGY INC | 2320960 | |
| COW HOLLOW #33 | Lincoln | 2026-03-18 | BANNON ENERGY INC | 2320958 | |
| COW HOLLOW #27 | Lincoln | 2026-03-18 | BANNON ENERGY INC | 2320978 | |
| COW HOLLOW #5 | Lincoln | 2026-03-18 | BP AMERICA PRODUCTION COMPANY | 2320698 | |
| 1-25 | Lincoln | 2026-03-18 | BP AMERICA PRODUCTION COMPANY | 2320699 | |
| COW HOLLOW #39 | Lincoln | 2026-03-18 | BANNON ENERGY INC | 2320956 | |
| COW HOLLOW #17 | Lincoln | 2026-03-18 | BANNON ENERGY INC | 2320866 | |
| 1-36 | Lincoln | 2026-03-18 | BP AMERICA PRODUCTION COMPANY | 2320696 | |
| COW HOLLOW #29 | Lincoln | 2026-03-18 | BANNON ENERGY INC | 2320998 |
Top Operators in the COW HOLLOW field by total wells
Operators: Hilcorp Energy Company, Breitburn Operating L.p., Eog Resources Inc, Anadarko E&p Onshore Llc, Chevron Usa Inc, Greylock Production Llc, Bannon Energy Inc, Bp America Production Company, Cabot Oil & Gas Corporation, Kerr-Mcgee Oil & Gas Onshore Lp.
Other Major Fields in Wyoming most active by total wells
Compare the COW HOLLOW 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