FIELDS · TEXAS · FIELD 72591500
Post Oak, SW. (Marble Falls)
Field · District 09 · Jack County and 1 more · Marble Falls in every state →
Post Oak, SW. (Marble Falls) is an RRC field with 8 leases on file reported by 12 operators, mostly in Jack County.
In the 12 months reported through April 2026 it produced 22,476 mcf of gas, down 15% on the year before, from 3 leases reporting volume.
Winfield Operating Company holds the most, 2 leases and 29,064 barrels of oil lifetime.
Lifetime, the field has reported 64,779 barrels of oil and 689,978 mcf of gas, across 7 oil and 1 gas leases.
- 8
- leases on file · 7 oil, 1 gas
- 3
- leases reporting volume
- 12
- operators, all time
- 3
- active wellbores of 11 · 2 operators today
- 391
- bbl oil, 12 months through Apr 2026 · −2%
- 22,476
- Mcf gas, same 12 months · −15%
- 64,779
- bbl oil, lifetime · 689,978 Mcf gas
Every well completed in it, searchable →
Reported production by month
12 months through Apr 2026 391 · prior 12 398(-2%)
Post Oak, SW. (Marble Falls): Oil by month.
Operators
BY LIFETIME OIL ON THEIR LEASES · TOP 6
| Operator | Leases | Oil, bbl | Gas, Mcf | Last reported |
|---|---|---|---|---|
| Winfield Operating Company | 2 | 29.1K | 111K | Apr 2026 |
| Devon Energy Production Co, L.P. | 2 | 23.3K | 125K | Sep 2013 |
| Legacy Exploration, LLC I | 1 | 8.19K | 100K | Nov 2017 |
| Eagleridge Operating, LLC | 1 | 3.46K | 335K | Apr 2026 |
| Amrwr, LLC | 1 | 732 | 19K | Oct 2019 |
| Great State Petroleum, Inc. | 1 | 0 | 0 | — |
Counties
- Jack County → 7 leases
- Clay County → 1 leases
Latest completions
BY COMPLETION DATE
| Well | Operator | County | Completed | Top perf, ft | Oil, 12 mo | Gas, 12 mo |
|---|---|---|---|---|---|---|
| Big Horn Lease #2 | Amrwr LLC | Jack | Jan 29, 2018 | — | — | — |
| Ethel Worthington #5 | Legacy Exploration LLC I | Jack | Dec 24, 2013 | — | — | — |
| Ethel Worthington #4 | Legacy Exploration LLC I | Jack | Sep 8, 2013 | — | — | — |
| Lindsey Ranch #6 | Devon Energy Production Co L.P. | Jack | Feb 5, 2013 | — | — | — |
| Lindsey Ranch B #9 | Eagleridge Operating LLC | Jack | Aug 7, 2008 | — | — | — |
| Lindsey Ranch B #11 | Devon Energy Production Co L.P. | Jack | Mar 20, 2002 | — | — | — |
| Duffy #1 | Winfield Operating Company | Jack | Jun 3, 1996 | — | — | — |
| Campsey A. D. #1 A | Dallas International Energy Corp | Jack | Oct 22, 1981 | — | — | — |
| Hoff Iva Mae #1 | Great State Petroleum Inc. | Clay | Jan 31, 1981 | — | — | — |
| Horn T. C. #1 | Winfield Operating Company | Jack | Jun 19, 1980 | — | — | — |
About this data
Field 72591500 from RRC PDQ lease reports: lifetime totals and lease and operator counts from the field summary; the monthly series summed from every lease report naming the field, cut at the statewide reported-through month, Apr 2026. Oil includes condensate from gas leases and gas includes casinghead gas from oil leases, as the RRC totals them. Counties from the wells completed on each lease. Completions are the wellbores the RRC schedule ties to the field. The formation, Marble Falls, is read from the field's name. Nothing is estimated.
Developers: this page as JSON is GET /v1/data/fields/tx/72591500, documented in the API reference.