WELL · 42-287-31523 · DISTRICT 3
Herman Estes Unit 1 #1
Lee County · Giddings (Austin Chalk-3) field · Horizontal
Herman Estes Unit 1 #1 (API 42-287-31523) is a plugged horizontal well in Lee County, plugged February 28, 1991, last operated by United Oil & Minerals Inc..
The RRC has issued 2 drilling permits between 1983 and 1995, permitted to 12,000 ft.
It was permitted by Arrow Exploration Company and has since transferred to United Oil & Minerals Inc. on the wellbore schedule.
Completion filings report 6 formation tops, including Pecan Gap, Ausitn Chalk, Austin Chalk, Eagle Ford.
Operator of record
Permitted by Arrow Exploration Company; the EWA schedule now lists a different operator.
Austin, TX · P-5 Y, filed Jun 8, 2001 · 464 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | United Oil & Minerals Inc. |
| Production reports | Magnolia Oil & Gas Operating LLCthrough Apr 2026 |
| Latest permit | Arrow Exploration CompanyDec 4, 1995 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,000
- total depth, ft
- 2
- permits on file
- Dec 4, 1995
- last permit issued
- Feb 24, 1984
- completed
- 0
- cumulative oil, bbl
- 1.35M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 1996 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 24, 1984
- Shut in
- —
- Plugged
- Feb 28, 1991
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 2 leases this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Estes G-3-158018 | Giddings (Austin Chalk, Gas) | Magnolia Oil & Gas Operating LLC | 1 | 0 | 1.35M | Feb 1996 – Jul 2026 |
| — O-3-17455 | — | — | 0 | 0 | 0 | — |
Gas, mcf lease total
Last 12 months 3,684 · prior 12 2,408(+53%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Arrow Exploration CompanyFeb 1996 → Dec 2004
- 2Emerald Operating Company, Inc.Jan 2005 → Aug 2008
- 3Enervest Operating, L.L.C.Sep 2008 → Jul 2018
- 4Magnolia Oil & Gas Operating LLCAug 2018 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 441306-99 | Reenter | Arrow Exploration Company | Oct 26, 1995 | Dec 4, 1995 | Jan 22, 1996 | 12,000 |
| 220377-99 | Drill | General Production Company, Inc. | Nov 10, 1983 | Nov 10, 1983 | Jan 24, 1984 | 9,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-158018 | — | — | — | — |
| — | — O-3-17455 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 321 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Pecan Gap | 7,703 | -7,382 |
| Ausitn Chalk | 8,251 | -7,930 |
| Austin Chalk | 8,265 | -7,944 |
| Eagle FordEAGLEFORD | 8,965 | -8,644 |
| Buda | 9,150 | -8,829 |
| Georgetown | 9,240 | -8,919 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,200 | 8,900 | Perforated |
| 8,287 | 8,881 | Perforated |
| 8,290 | 9,783 | Perforated |
| 8,607 | 8,952 | Perforated |
| 8,610 | 10,349 | Perforated |
| 8,901 | 8,859 | Perforated |
| 9,137 | 10,591 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 3,955 | 12.25 | 1,030 S |
| 5.5 | 8,290 | 7.875 | 320 S |
| 7 | 9,300 | 8.75 | 550 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 | Jun 21, 1996 | May 8, 1996 | Yes |
| 00 | May 24, 1996 | — | — |
| 00 | Apr 26, 1984 | Apr 2, 1984 | — |
| 00 | Apr 15, 1984 | Apr 2, 1984 | — |
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 42-287-31523 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-287-31523 → 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/28731523, documented in the API reference.