Fields: HALLEY
Cum Oil
412k BBL
Cum Gas
570k MCF
casinghead
Wells
53
Production
1993-01 — 2023-11
Peak Month
1993-01
Production History Production data is a work in progress — still being validated against RRC filings. Spot something off or have questions? [email protected]
Cum Oil: 412,035 BBL Cum Gas: 569,876 MCF
RRC production reported through Apr 2026 · recent months incomplete
Decline Curve Analysis
qi
3,104 BBL/mo
Di (annual)
8.5%
b-factor
0.0
EUR
433,968 BBL
R-squared
0.929
type
exponential
Operator History (from monthly production reports)
Wells (53)
| WELL# | API | OPERATOR | PERMITS | DEPTH | LAST_ISSUED |
|---|---|---|---|---|---|
| 63 | 42-495-32309 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1990-01-08 |
| 64 | 42-495-32310 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1990-01-08 |
| 65 | 42-495-32311 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1990-01-08 |
| 66 | 42-495-32312 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1990-01-08 |
| 62 | 42-495-32293 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1989-11-03 |
| 60 | 42-495-32292 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1989-10-31 |
| 61 | 42-495-32291 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1989-10-31 |
| 3WS | 42-495-32294 | HEIFER PRODUCTION COMPANY LLC | 1 | 250 | 1989-10-27 |
| 57 | 42-495-32282 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1989-09-21 |
| 58 | 42-495-32283 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1989-09-21 |
| 59 | 42-495-32284 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1989-09-21 |
| 35 | 42-495-00512 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,110 | 1989-03-01 |
| 52 | 42-495-32033 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-12-18 |
| 50 | 42-495-32023 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-11-22 |
| 51 | 42-495-32025 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-11-22 |
| 53 | 42-495-32024 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-11-22 |
| 54 | 42-495-32026 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-11-22 |
| 55 | 42-495-32028 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-11-22 |
| 56 | 42-495-32027 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-11-22 |
| 47 | 42-495-31992 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-10-11 |
| 46 | 42-495-31976 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-09-24 |
| 48 | 42-495-31977 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-09-24 |
| 49 | 42-495-31975 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-09-24 |
| 42 | 42-495-31964 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,300 | 1985-08-02 |
| 43 | 42-495-31965 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-08-02 |
| 44 | 42-495-31958 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-07-15 |
| 45 | 42-495-31959 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-07-15 |
| 39 | 42-495-31911 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-03-06 |
| 40 | 42-495-31912 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-03-06 |
| 41 | 42-495-31913 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,200 | 1985-03-06 |
| 38 | 42-495-31859 | HEIFER PRODUCTION COMPANY LLC | 1 | 3,000 | 1984-11-20 |
| 10 | 42-495-00489 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 11 | 42-495-81825 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 15 | 42-495-00493 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 18 | 42-495-00496 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 19W | 42-495-00497 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 20W | 42-495-00498 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 21 | 42-495-00499 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 22W | 42-495-00500 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 23W | 42-495-00501 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 26W | 42-495-00504 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 27W | 42-495-00505 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 28 | 42-495-00506 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 29W | 42-495-00507 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 2S | 42-495-00481 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 31 | 42-495-00509 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 32W | 42-495-00510 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 33 | 42-495-00511 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 34W | 42-495-06427 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 36W | 42-495-05948 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 4 | 42-495-00483 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 7W | 42-495-00486 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |
| 9W | 42-495-00488 | HEIFER PRODUCTION COMPANY LLC | -- | -- | -- |