FIELDS · TEXAS · FIELD 55050666
Lost Valley (Marble Falls)
Field · District 09 · Jack County · Marble Falls in every state →
Lost Valley (Marble Falls) is an RRC field with 20 leases on file reported by 17 operators, in Jack County.
In the 12 months reported through April 2026 it produced 40,096 mcf of gas, up 3% on the year before, from 5 leases reporting volume.
Paratus Petroleum LLC holds the most, 4 leases and 1.5 million mcf of gas lifetime.
Lifetime, the field has reported 158,457 barrels of oil and 2.7 million mcf of gas, across 15 oil and 5 gas leases.
- 20
- leases on file · 15 oil, 5 gas
- 5
- leases reporting volume
- 17
- operators, all time
- 8
- active wellbores of 28 · 4 operators today
- 1,062
- bbl oil, 12 months through Apr 2026 · −22%
- 40,096
- Mcf gas, same 12 months · +3%
- 158,457
- bbl oil, lifetime · 2.7M Mcf gas
Every well completed in it, searchable →
Reported production by month
12 months through Apr 2026 1,062 · prior 12 1,354(-22%)
Lost Valley (Marble Falls): Oil by month.
Operators
BY LIFETIME OIL ON THEIR LEASES · TOP 8
| Operator | Leases | Oil, bbl | Gas, Mcf | Last reported |
|---|---|---|---|---|
| Paratus Petroleum LLC | 4 | 86.6K | 1.48M | Apr 2026 |
| Xplore Operating, LLC | 4 | 33.7K | 554K | Jul 2018 |
| Miles Production Co. | 7 | 20K | 107K | Sep 1999 |
| Jay Management Company, LLC | 1 | 7.15K | 54.2K | May 2017 |
| G & F Oil, Inc. | 1 | 5.04K | 107K | Apr 2026 |
| Moriah Resources, Inc. | 1 | 3.68K | 40.6K | Sep 2002 |
| Briar Energy Corporation | 1 | 2.27K | 345K | Apr 2026 |
| Hep Oil Company, Ltd. | 1 | 0 | 559 | Apr 2006 |
Counties
- Jack County → 20 leases
Latest completions
BY COMPLETION DATE
| Well | Operator | County | Completed | Top perf, ft | Oil, 12 mo | Gas, 12 mo |
|---|---|---|---|---|---|---|
| Hanna Heirs a #1 | Paratus Petroleum LLC | Jack | Jul 21, 2021 | — | — | — |
| Alta Briscoe #1 | G & F Oil Inc. | Jack | Nov 29, 2015 | — | — | — |
| Scott #2 | Briar Energy Corporation | Jack | Mar 21, 2013 | — | — | — |
| Turner Mary-3-4-5-6 #4 | Paratus Petroleum LLC | Jack | Feb 1, 2007 | — | — | — |
| Peek Emma #8 | Xplore Operating LLC | Jack | Mar 13, 2006 | — | — | — |
| Robertson-Deats #1 | Great American Resources Inc. | Jack | Mar 8, 1999 | — | — | — |
| Turner Mary-3-4-5-6 #6 | Paratus Petroleum LLC | Jack | Jan 8, 1997 | — | — | — |
| Turner Mary-3-4-5-6 #5 | Paratus Petroleum LLC | Jack | Nov 9, 1994 | — | — | — |
| King Alma #1 | Paratus Petroleum LLC | Jack | Feb 14, 1994 | — | — | — |
| Rumph D.M. #2 | Miles Production Co. | Jack | Aug 25, 1993 | — | — | — |
About this data
Field 55050666 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/55050666, documented in the API reference.