WELL · 42-507-33537 · DISTRICT 1
J&M Holdsworth Zav #A 4H
Zavala County · Briscoe Ranch (Eagleford) field · Producing · Horizontal
J&M Holdsworth Zav #A 4H (API 42-507-33537) is a horizontal well in Zavala County operated by Buffco Production Inc., completed October 24, 2024 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued May 3, 2024, permitted to 13,000 ft.
Completion filings report 3 formation tops, including Escondido, Austin Chalk, Eagle Ford.
Its lease has reported 599K barrels of oil and 334K mcf of gas since October 2014, last reporting in July 2026. The lease carries 5 wells, so these are lease totals, not this well alone.
Operator of record
Longview, TX · P-5 Y, filed Sep 4, 2025 · 396 permits on file · (903) 736-4697
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Buffco Production Inc. |
| Production reports | Buffco Production Inc.through Apr 2026 |
| Latest permit | Buffco Production Inc.May 3, 2024 |
- 13,000
- total depth, ft
- 1
- permits on file
- May 3, 2024
- last permit issued
- Oct 24, 2024
- completed
- 599K
- cumulative oil, bbl
- 334K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2014 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 24, 2024
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
28.710168, -99.628458
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Zavala County.
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; they carry 5 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| J&M Holdsworth Zav O-1-18279 | Briscoe Ranch (Eagleford) | Buffco Production Inc. | 5 | 599K | 334K | Oct 2014 – Jul 2026 |
Oil, barrels lease total
Last 12 months 279,439 · prior 12 213,914(+31%)
Gas, mcf lease total
Last 12 months 183,648 · prior 12 60,906(+202%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Exco Operating Company, LPDec 2014 → Mar 2016
- 2SN Operating, LLCApr 2016 → Jan 2022
- 3Formentera Operations LLCFeb 2022 → Dec 2023
- 4Buffco Production Inc.Jan 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 899342-99 | Drill | Buffco Production Inc. | Apr 30, 2024 | May 3, 2024 | Jun 9, 2024 | 13,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-18279 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 611 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| EscondidoESCONDIDO - DISPOSAL | 2,834 | -2,223 |
| Austin Chalk | 5,766 | -5,155 |
| Eagle FordEAGLEFORD | 6,305 | -5,694 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,820 | 18,074 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 2,465 | 12.25 | 740 S |
| 5.5 | 18,295 | 8.75 | 3,495 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 | Dec 10, 2024 | Nov 19, 2024 | Yes |
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 42-507-33537 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-507-33537 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
J&M Holdsworth Zav42-507-33538
0.0 KM · Buffco Production Inc. · Section with this well →
| Escondido | 2,830 | -2,219 |
| Austin Chalk | 5,754 | -5,143 |
| Eagle Ford | 6,308 | -5,697 |
J&M Holdsworth Zav42-507-33535
0.8 KM · Buffco Production Inc. · Section with this well →
| Escondido | 3,040 | -2,446 |
| Austin Chalk | 5,612 | -5,018 |
| Eagle Ford | 6,271 | -5,677 |
J&M Holdsworth Zav42-507-33534
0.8 KM · Buffco Production Inc. · Section with this well →
| Escondido | 3,053 | -2,459 |
| Austin Chalk | 5,588 | -4,994 |
| Eagle Ford | 6,248 | -5,654 |
Pfeiffer-Byrd42-507-33514
3.1 KM · CML Exploration, LLC · Section with this well →
| Escondido | 2,923 | -2,293 |
| Olmos | 3,960 | -3,330 |
| Austin Chalk | 5,801 | -5,171 |
Beeler Ranch42-507-33299
3.7 KM · CML Exploration, LLC · Section with this well →
| Escondido | 2,718 | -2,116 |
| Olmos | 3,744 | -3,142 |
| Anacacho | 5,077 | -4,475 |
| Austin Chalk | 5,502 | -4,900 |
| Buda | 6,596 | -5,994 |
| Georgetown | 6,938 | -6,336 |
Holdsworth A42-507-33557
3.7 KM · Rosewood Resources, Inc. · Section with this well →
| Escondido | 2,767 | -2,095 |
| Olmos | 3,661 | -2,989 |
| Eagle Ford | 6,183 | -5,511 |
Holdsworth A42-507-33556
3.7 KM · Rosewood Resources, Inc. · Section with this well →
| Escondido | 2,759 | -2,086 |
| Olmos | 3,653 | -2,980 |
| Eagle Ford | 6,168 | -5,495 |
Aaron42-507-33346
3.8 KM · CML Exploration, LLC · Section with this well →
| Escondido | 2,946 | -2,343 |
| Olmos | 3,987 | -3,384 |
| Anacacho | 5,422 | -4,819 |
| Austin Chalk | 5,867 | -5,264 |
| Buda | 6,848 | -6,245 |
| Georgetown | 7,150 | -6,547 |
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/50733537, documented in the API reference.