WELL · 42-241-30653 · DISTRICT 6
Ellis Unit A-521 #1
Jasper County · Brookeland (Austin Chalk 8800) field · Producing · Horizontal
Ellis Unit A-521 #1 (API 42-241-30653) is a horizontal well in Jasper County operated by Delfin Operating LLC, completed January 11, 1999 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended twice), issued June 29, 1998, permitted to 18,500 ft.
It was permitted by Union Pacific Resources Company and has since transferred to Delfin Operating LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Wilcox, Midway, Navarro, Taylor.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Union Pacific Resources Company; the EWA schedule now lists a different operator.
Dallas, TX · P-5 Y, filed Mar 4, 2026 · 7 permits on file · (214) 926-4266
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Delfin Operating LLC |
| Production reports | Delfin Operating, LLCthrough Feb 2026 |
| Latest permit | Union Pacific Resources CompanyJun 29, 1998 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 18,500
- total depth, ft
- 3
- permits on file
- Jun 29, 1998
- last permit issued
- Jan 11, 1999
- completed
- 0
- cumulative oil, bbl
- 1.54M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1999 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 11, 1999
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
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 |
|---|---|---|---|---|---|---|
| Ellis Unit A-521 G-6-171881 | Brookeland (Austin Chalk, 8800) | Delfin Operating, LLC | 1 | 0 | 1.54M | Jan 1999 – Jul 2026 |
Gas, mcf lease total
Last 12 months 1,449 · prior 12 2,410(-40%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Union Pacific Resources CompanyJan 1999 → Jan 2001
- 2Rme Petroleum CompanyFeb 2001 → Nov 2002
- 3Anadarko E&P Company LPDec 2002 → Jul 2007
- 4Enervest Operating, L.L.C.Aug 2007 → Sep 2009
- 5Three Forks Resources, LLCOct 2009 → Sep 2014
- 6Cornerstone Petroleum OP, LLCOct 2014 → Apr 2019
- 7Shoco Production, L.P.May 2019 → May 2020
- 8Shoco Production LLCJun 2020 → Dec 2020
- 9Permian Natural ResourcesJul 2021 → Oct 2024
- 10Delfin Operating, LLCNov 2024 → Feb 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 477362-97 | Drill | Union Pacific Resources Company | Feb 12, 1999 | Jun 29, 1998 | — | 12,065 |
| 477362-98 | Drill | Union Pacific Resources Company | Sep 2, 1998 | Jun 29, 1998 | — | 18,500 |
| 477362-99 | Drill | Union Pacific Resources Company | Jun 23, 1998 | Jun 29, 1998 | Oct 31, 1998 | 18,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-6-171881 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 117 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| WilcoxWILCOX SANDS | 7,700 | -7,583 |
| MidwayMIDWAY SHALE | 9,050 | -8,933 |
| NavarroNAVARRO SANDS | 10,307 | -10,190 |
| TaylorTAYLOR SHALE | 11,027 | -10,910 |
| Austin Chalk | 11,418 | -11,301 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,430 | 15,978 | Perforated |
| 11,590 | 15,751 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 2,010 | 14.75 | 955 S |
| 7.625 | 11,482 | 9.875 | 820 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 | Mar 31, 1999 | Feb 4, 1999 | Yes |
| 00 | Feb 26, 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 42-241-30653 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-241-30653 → 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/24130653, documented in the API reference.