WELLS · TEXAS · ONE ROW PER API NUMBER
JM Calk Operating, LLC wells
Every well on the Railroad Commission's schedule or with a drilling permit on file, newest permit first: who operates it, where it is, the field it is completed in, its permits, and the last month its lease reported.What an API number is →
A full API number opens the well. Anything else filters the list below.
Production
Texas reports production by lease, so a well carries no volumes of its own: "Last reported" is the last month the lease it is tied to reported. How Texas production is reported →
33 WELLS · PAGE 1 OF 1
These wells on a map →| Well | Operator | County, field | Status | Depth, ft | Permit | Permits | Last reported |
|---|---|---|---|---|---|---|---|
| Erd Unit #1442-029-38404 | JM Calk Operating, LLC | Bexar | Permitted | 1,500 | Feb 19, 2026 | 1 | — |
| Erd Unit #1542-029-38405 | JM Calk Operating, LLC | Bexar | Permitted | 1,500 | Feb 19, 2026 | 1 | — |
| Erd Unit #1342-029-38403 | JM Calk Operating, LLC | Bexar | Permitted | 1,500 | Feb 18, 2026 | 1 | — |
| Erd Unit #1242-029-38402 | JM Calk Operating, LLC | Bexar | Permitted | 1,500 | Feb 13, 2026 | 1 | — |
| Erd Unit #642-029-38335 | JM Calk Operating, LLC | Bexar | Permitted | 1,500 | Dec 15, 2025 | 2 | — |
| Erd Unit #742-029-38400 | JM Calk Operating, LLC | Bexar | Permitted | 1,500 | Dec 15, 2025 | 1 | — |
| Erd Unit #842-029-38401 | JM Calk Operating, LLC | Bexar | Permitted | 1,500 | Dec 15, 2025 | 1 | — |
| Garza #142-029-38328 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,375 | Oct 27, 2014 | 1 | Apr 2026 |
| Garza #242-029-38329 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,364 | Oct 27, 2014 | 1 | Apr 2026 |
| Garza #342-029-38330 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,363 | Oct 27, 2014 | 1 | Apr 2026 |
| Garza #442-029-38331 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,372 | Oct 27, 2014 | 1 | Apr 2026 |
| Garza #542-029-38332 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,368 | Oct 27, 2014 | 1 | Apr 2026 |
| Brown #142-029-38317 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,351 | May 12, 2014 | 1 | Apr 2026 |
| Brown #242-029-38318 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,369 | May 12, 2014 | 1 | Apr 2026 |
| Brown #342-029-38319 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,356 | May 12, 2014 | 1 | Apr 2026 |
| Brown #442-029-38320 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,363 | May 12, 2014 | 1 | Apr 2026 |
| Brown #542-029-38321 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,340 | May 12, 2014 | 1 | Apr 2026 |
| Erd Unit #942-029-38304 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,330 | Dec 18, 2013 | 1 | Apr 2026 |
| Erd Unit #1042-029-38305 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,321 | Dec 18, 2013 | 1 | Apr 2026 |
| Erd Unit #1142-029-38306 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,339 | Dec 18, 2013 | 1 | Apr 2026 |
| Erd Unit #142-029-38296 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,371 | Aug 1, 2013 | 1 | Apr 2026 |
| Erd Unit #242-029-38297 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,339 | Aug 1, 2013 | 1 | Apr 2026 |
| Erd Unit #342-029-38298 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,396 | Aug 1, 2013 | 1 | Apr 2026 |
| Erd Unit #442-029-38299 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,312 | Aug 1, 2013 | 1 | Apr 2026 |
| Erd Unit #542-029-38300 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,393 | Aug 1, 2013 | 1 | Apr 2026 |
| Haecker #142-029-38290 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,415 | Apr 25, 2013 | 1 | Apr 2026 |
| Haecker #242-029-38291 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,412 | Apr 25, 2013 | 1 | Apr 2026 |
| Haecker #442-029-38292 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,414 | Apr 25, 2013 | 1 | Apr 2026 |
| Haecker #542-029-38293 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,412 | Apr 25, 2013 | 1 | Apr 2026 |
| Haecker #342-029-38294 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,412 | Apr 25, 2013 | 1 | Apr 2026 |
| Peters #242-163-33525 | JM Calk Operating LLC | FrioStacy (Olmos -A-) | ActiveOil | 4,323 | Sep 9, 2011 | 1 | Mar 2026 |
| Peters #142-163-33470 | JM Calk Operating LLC | FrioStacy (Olmos -A-) | Shut inOil | 4,300 | May 3, 2011 | 1 | Mar 2026 |
| Sawyer N.C. #142-029-33002 | JM Calk Operating LLC | BexarFairfield | ActiveOil | 1,319 | May 6, 1983 | 1 | Aug 2025 |
About this data
One row per API number: every well on the Railroad Commission wellbore schedule, and every API number a drilling permit names. Operator, field, status, and dates are the schedule's where it lists the well, the latest permit's otherwise. Permits on file counts every permit and amendment. Texas reports production by lease, so a well shows the last month its lease reported and no volumes. Nothing is estimated.
Developers: this page as JSON is GET /v1/data/wells?state=tx, documented in the API reference.