WELL · 42-507-33297 · DISTRICT 1
Mary Ellen Holdsworth #1
Zavala County · Holdsworth (Elaine UP Seg 1) field · Producing · Vertical
Mary Ellen Holdsworth #1 (API 42-507-33297) is a well in Zavala County operated by MB Energy LLC, completed June 24, 2017 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued May 18, 2017, permitted to 4,500 ft.
It was permitted by Inland Ocean, Inc. and has since transferred to MB Energy LLC on the wellbore schedule.
Completion filings report one formation top, including Escondido.
Its lease has reported 10.4K barrels of oil since June 2017, last reporting in July 2026.
Operator of record
Permitted by Inland Ocean, Inc.; the EWA schedule now lists a different operator.
San Antonio, TX · P-5 Y, filed Oct 4, 2025 · 25 permits on file · (512) 913-0276
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | MB Energy LLC |
| Production reports | MB Energy, LLCthrough Apr 2026 |
| Latest permit | Inland Ocean, Inc.May 18, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,500
- total depth, ft
- 2
- permits on file
- May 18, 2017
- last permit issued
- Jun 24, 2017
- completed
- 10.4K
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2017 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 24, 2017
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
28.827400, -99.692150
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mary Ellen Holdsworth O-1-19123 | Holdsworth (Elaine UP Seg 1) | MB Energy, LLC | 1 | 10.4K | 0 | Jun 2017 – Jul 2026 |
Oil, barrels lease total
Last 12 months 739 · prior 12 994(-26%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Inland Ocean, Inc.Jul 2017 → Apr 2022
- 2MB Energy, LLCMay 2022 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 826504-98 | Drill | Inland Ocean, Inc. | Sep 20, 2017 | May 18, 2017 | Jun 15, 2017 | 4,500 |
| 826504-99 | Drill | Inland Ocean, Inc. | May 10, 2017 | May 18, 2017 | Jun 15, 2017 | 4,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-19123 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 683 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| EscondidoESCONDIDO - DISPOSAL | 2,337 | -1,654 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,802 | 3,804 | Perforated |
| 3,806 | 3,816 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 569 | 12.25 | 325 S |
| 4.5 | 3,975 | 7.875 | 560 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 | Feb 21, 2018 | Oct 11, 2017 | 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 42-507-33297 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-507-33297 → 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.
Mary Ellen Holdsworth42-507-33303
1.2 KM · Inland Ocean, Inc. · Section with this well →
| Escondido | 3,738 | -3,057 |
Tidwell Unit42-507-33513
6.1 KM · Etoco, L.P. · Section with this well →
| Escondido | 2,550 | -1,920 |
| Olmos | 3,583 | -2,953 |
| San Miguel | 4,014 | -3,384 |
| Anacacho | 4,582 | -3,952 |
| Austin Chalk | 5,093 | -4,463 |
| Eagle Ford | 5,963 | -5,333 |
Holdsworth B42-507-33555
6.2 KM · Rosewood Resources, Inc. · Section with this well →
| Escondido | 2,464 | -1,835 |
| Olmos | 3,323 | -2,694 |
| Eagle Ford | 5,822 | -5,193 |
Holdsworth B42-507-33554
6.2 KM · Rosewood Resources, Inc. · Section with this well →
| Escondido | 2,467 | -1,838 |
| Olmos | 3,322 | -2,693 |
| Eagle Ford | 5,837 | -5,208 |
Ada Hammond Heirs42-507-32660
6.5 KM · Rattler Oil & Gas Corp. · Section with this well →
| Escondido | 2,215 | -1,492 |
| Escondido | 2,215 | -1,492 |
| Olmos | 2,830 | -2,107 |
| San Miguel | 3,120 | -2,397 |
Tidwell Unit42-507-33480
6.7 KM · Etoco, L.P. · Section with this well →
| Escondido | 2,290 | -1,612 |
| Olmos | 3,568 | -2,890 |
| San Miquel | 4,108 | -3,430 |
| Anacacho | 4,728 | -4,050 |
| Austin Chalk | 5,178 | -4,500 |
| Eagle Ford | 5,922 | -5,244 |
Tidwell Unit Zav C42-507-33528
8.4 KM · Exco Operating Company, LP · Section with this well →
| Escondido | 2,891 | -2,151 |
| Olmos | 3,900 | -3,160 |
| San Miguel | 4,376 | -3,636 |
| Anacacho | 5,192 | -4,452 |
| Austin Chalk | 5,416 | -4,676 |
| Eagle Ford | 6,030 | -5,290 |
Tidwell Unit Zav A42-507-33526
8.4 KM · Exco Operating Company, LP · Section with this well →
| Escondido | 2,890 | -2,150 |
| Olmos | 3,911 | -3,171 |
| San Miguel | 4,352 | -3,612 |
| Anacacho | 5,096 | -4,356 |
| Austin Chalk | 5,363 | -4,623 |
| Eagle Ford | 6,023 | -5,283 |
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/50733297, documented in the API reference.