FIELDS · 36353400 · DISTRICT 7B
Grand Old Oplin (Gray)
Grand Old Oplin (Gray) is an RRC field with 33 leases on file reported by 39 operators, mostly in Callahan County.
In the 12 months reported through April 2026 it produced 12,718 barrels of oil, down 12% on the year before, from 4 leases reporting volume.
Windham Resources holds the most, 3 leases and 241,777 barrels lifetime.
Lifetime, the field has reported 768,694 barrels of oil and 1.2 million mcf of gas, across 32 oil and 1 gas leases.
- 33
- leases on file · 32 oil, 1 gas
- 39
- operators, all time
- 12.7K
- bbl oil, last 12 reported -12%
- 33.9K
- mcf gas, last 12 reported -22%
- 4
- leases reporting volume
- 769K
- bbl oil, lifetime · 1.2M mcf
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Oil by month
TEN YEARS · EVERY LEASE IN THE FIELD
Barrels reported on Form PR across the field's leases. The latest months are revised upward as late reports arrive.
Last 12 months 12,718 · prior 12 14,526(-12%)
Gas by month
TEN YEARS · EVERY LEASE IN THE FIELD
Gas-well gas plus casinghead, mcf, across the field's leases. The latest months are revised upward as late reports arrive.
Last 12 months 33,861 · prior 12 43,466(-22%)
Leases reporting volume
How many of the field's leases reported any oil or gas each month: the field's active footprint.
Latest month 4 · a year earlier 4(+0%)
Operators
BY LIFETIME OIL ON THEIR LEASES · TOP 18
| Operator | Leases | Oil, bbl | Gas, mcf | Last reported |
|---|---|---|---|---|
| Windham Resources | 3 | 242K | 97.1K | Jul 2026 |
| 3 S Prod, Inc | 2 | 190K | 308K | Jul 2026 |
| Chisholm Oper, Inc | 2 | 164K | 389K | Jul 2026 |
| Augusta Oil & Gas Inc | 1 | 35K | 46K | Feb 2012 |
| Creston Petro Corp | 1 | 30.3K | 40.3K | May 2015 |
| Encon Services, Inc | 2 | 23.9K | 87.8K | Aug 2011 |
| Midland Oil and Gas, Inc | 3 | 19.3K | 47.3K | Mar 2008 |
| Sun-Key Oil Co., Inc | 1 | 19K | 72.4K | Jun 2015 |
| Momentum Oper Co., Inc | 1 | 15.2K | 29.1K | Jul 2026 |
| Window Oper Co., The | 3 | 10.6K | 33.2K | Jul 2026 |
| Benson & Schoen Oil Co., Inc | 3 | 6.54K | 20.5K | Apr 2007 |
| Mercury Expl Co | 2 | 3.98K | 14.1K | Aug 2003 |
| Vista Res, Inc. (A) | 1 | 3.01K | 5.19K | Oct 1998 |
| Dallas Prod, Inc | 2 | 2.76K | 5.15K | Mar 1996 |
| R R Operation Inc | 1 | 1.9K | 205 | Feb 1998 |
| Conquistador Petro,inc | 3 | 1.21K | 365 | Apr 1999 |
| Tracker Mineral | 1 | 28 | 3 | Apr 2005 |
| Smith, Joe T. Inc | 1 | 0 | 0 | Feb 2000 |
Counties
- Callahan County → 30 leases
- Taylor County → 3 leases
About this data
Field 36353400 from RRC PDQ lease reports: lifetime totals and lease and operator counts from the field summary; the monthly series summed nightly from every lease report naming the field, cut at the statewide reported-through month. Counties from the wells completed on each lease.
New to these records? how production is reported
Developers: this page as JSON is GET /v1/data/fields/tx/36353400, documented in the API reference.