WELL · 42-237-38456 · DISTRICT 9
Matlock #1
Jack County · Bryson East field · Producing · Vertical
Matlock #1 (API 42-237-38456) is a well in Jack County operated by Greco Operating LLC, completed June 26, 1999 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued April 26, 1999, permitted to 5,999 ft.
It was permitted by Greco Operating, Inc. and has since transferred to Greco Operating LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Bryson, Caddo, Atoka, Marble Falls.
Its lease has reported 282K barrels of oil and 216K mcf of gas since June 1999, last reporting in July 2026.
Operator of record
Permitted by Greco Operating, Inc.; the EWA schedule now lists a different operator.
Graham, TX · P-5 Y, filed Dec 4, 2025 · 2 permits on file · (940) 782-8558
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Greco Operating LLC |
| Production reports | Greco Operating, LLCthrough Apr 2026 |
| Latest permit | Greco Operating, Inc.Apr 26, 1999 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,999
- total depth, ft
- 1
- permits on file
- Apr 26, 1999
- last permit issued
- Jun 26, 1999
- completed
- 282K
- cumulative oil, bbl
- 216K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 1999 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 26, 1999
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Matlock O-13-29655 | Bryson, East | Greco Operating, LLC | 1 | 282K | 216K | Jun 1999 – Jul 2026 |
Oil, barrels lease total
Last 12 months 3,769 · prior 12 4,389(-14%)
Gas, mcf lease total
Last 12 months 1,449 · prior 12 2,529(-43%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Greco Operating, Inc.Jun 1999 → Mar 2011
- 2Greco Operating, LLCApr 2011 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 484024-99 | Drill | Greco Operating, Inc. | Apr 22, 1999 | Apr 26, 1999 | Jun 1, 1999 | 5,999 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-13-29655 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,329 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| BrysonUPPER BRYSON | 3,013 | -1,684 |
| BrysonLOWER BRYSON | 3,148 | -1,819 |
| Caddo | 4,318 | -2,989 |
| AtokaATOKA CONGL | 4,736 | -3,407 |
| Marble Falls | 4,780 | -3,451 |
| Mississippian | 5,288 | -3,959 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,318 | 5,322 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 435 | 12.25 | 250 S |
| 4.5 | 4,365 | 7.875 | 275 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jul 29, 1999 | Jul 2, 1999 | Yes |
| 00 | Jul 15, 1999 | — | — |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-237-38456 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-237-38456 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/23738456, documented in the API reference.