WELL · 42-287-31224 · DISTRICT 3
Lillie Unit #1
Lee County · Giddings (Buda) field · Horizontal
Lillie Unit #1 (API 42-287-31224) is a horizontal well in Lee County operated by Santa FE - Windsor Producing CO., completed May 15, 1982.
The RRC has issued 3 drilling permits between 1982 and 1998, permitted to 9,600 ft.
It was permitted by Union Pacific Resources Company and has since transferred to Santa FE - Windsor Producing CO. on the wellbore schedule.
Completion filings report 6 formation tops, including Navarro, Pecan Gap, Austin Chalk, Eagle Ford.
Its lease has reported 146K barrels of oil and 269K mcf of gas since January 1993, last reporting in July 2026.
Operator of record
Santa FE - Windsor Producing Co.
Permitted by Union Pacific Resources Company; the EWA schedule now lists a different operator.
Giddings, TX · P-5 Y, filed Oct 15, 1984 · 127 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Santa FE - Windsor Producing Co. |
| Production reports | Magnolia Oil & Gas Operating LLCthrough Apr 2026 |
| Latest permit | Union Pacific Resources CompanyMay 13, 1998 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,600
- total depth, ft
- 3
- permits on file
- May 13, 1998
- last permit issued
- May 15, 1982
- completed
- 146K
- cumulative oil, bbl
- 269K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 15, 1982
- Shut in
- —
- Plugged
- —
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 |
|---|---|---|---|---|---|---|
| Lillie Unit O-3-17227 | Giddings (Austin Chalk-3) | Magnolia Oil & Gas Operating LLC | 1 | 146K | 269K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 2,000 · prior 12 2,381(-16%)
Gas, mcf lease total
Last 12 months 4,229 · prior 12 5,455(-22%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Union Pacific Resources CompanyJan 1993 → Jan 2001
- 2Rme Petroleum CompanyFeb 2001 → Nov 2002
- 3Anadarko E&P Company LPDec 2002 → Aug 2007
- 4Enervest Operating, L.L.C.Sep 2007 → Jul 2018
- 5Magnolia Oil & Gas Operating LLCAug 2018 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 476119-99 | Recompletion | Union Pacific Resources Company | May 8, 1998 | May 13, 1998 | May 19, 1998 | 9,000 |
| 226981-99 | Recompletion | Santa FE - Windsor Producing Co. | Nov 30, 1983 | Jan 20, 1984 | — | 9,600 |
| 156962-99 | Drill | Santa FE - Windsor Producing Co. | Apr 12, 1982 | Apr 12, 1982 | — | 9,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-17227 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 465 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Navarro | 6,370 | -5,905 |
| Pecan Gap | 7,575 | -7,110 |
| Austin Chalk | 8,042 | -7,577 |
| Eagle FordEAGLEFORD | 8,778 | -8,313 |
| False Buda | 8,901 | -8,436 |
| Buda | 8,937 | -8,472 |
| BudaBUDA RESERVOIR | 8,937 | -8,472 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,346 | 10,470 | Perforated |
| 8,346 | 11,010 | Perforated |
| 8,596 | 8,767 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 3,938 | 12.25 | 950 S |
| 9.625 | 3,938 | — | 950 S |
| 2.375 | 8,826 | — | — |
| 5.5 | 8,929 | 6.75 | 500 S |
| 5.5 | 8,929 | 8.75 | 500 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 30, 1998 | Jul 8, 1998 | Yes |
| 00 | Feb 13, 1984 | Dec 5, 1983 | — |
| 00 | Jan 31, 1984 | Dec 5, 1983 | — |
| 00 | Jan 12, 1984 | May 27, 1982 | — |
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 42-287-31224 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-287-31224 → 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/28731224, documented in the API reference.