WELL · 42-287-30403 · DISTRICT 3
Tilli #1
Lee County · Giddings (Austin Chalk Gas) field · Horizontal · Sidetrack
Tilli #1 (API 42-287-30403) is a plugged horizontal well in Lee County, plugged September 12, 2017, last operated by U. S. Operating Inc..
The RRC has issued 2 drilling permits (amended once) between 1978 and 1997, permitted to 10,000 ft.
It was permitted by Union Pacific Resources Company and has since transferred to U. S. Operating Inc. on the wellbore schedule.
Completion filings report 2 formation tops, including Austin Chalk, Eagle Ford.
Its lease has reported 113K barrels of oil and 1.19M mcf of gas since January 1993, last reporting in February 2018.
Operator of record
Permitted by Union Pacific Resources Company; the EWA schedule now lists a different operator.
Dallas, TX · P-5 Y, filed Sep 4, 2025 · 495 permits on file · (979) 542-3107
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | U. S. Operating Inc. |
| Production reports | U. S. Operating, Inc.through Dec 2001 |
| Latest permit | Union Pacific Resources CompanyAug 21, 1997 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,000
- total depth, ft
- 3
- permits on file
- Aug 21, 1997
- last permit issued
- Mar 19, 1979
- completed
- 113K
- cumulative oil, bbl
- 1.19M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Feb 2018
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Mar 19, 1979
- Shut in
- —
- Plugged
- Sep 12, 2017
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 |
|---|---|---|---|---|---|---|
| Tilli O-3-20530 | Giddings (Austin Chalk-3) | U. S. Operating, Inc. | 1 | 113K | 1.19M | Jan 1993 – Feb 2018 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1U. S. Operating, Inc.Jan 1993 → Dec 2001
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 466551-98 | Recompletion · sidetrack | Union Pacific Resources Company | Oct 10, 1997 | Aug 21, 1997 | — | 9,300 |
| 466551-99 | Recompletion · sidetrack | Union Pacific Resources Company | Aug 21, 1997 | Aug 21, 1997 | Aug 27, 1997 | 9,300 |
| 33425-99 | Drill | U. S. Resources, Inc. | Sep 26, 1978 | Sep 26, 1978 | Jan 25, 1979 | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-20530 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 297 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 8,122 | -7,825 |
| Austin Chalk | 8,462 | -8,165 |
| Eagle FordEAGLEFORD | 8,850 | -8,553 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 394 | 8,847 | Perforated |
| 8,462 | 8,464 | Perforated |
| 8,498 | 8,500 | Perforated |
| 8,510 | 8,512 | Perforated |
| 8,624 | 8,849 | Perforated |
| 8,705 | 10,950 | Perforated |
| 8,723 | 10,678 | Perforated |
| 8,735 | 10,494 | Perforated |
| 8,745 | 10,204 | Perforated |
| 8,774 | 9,298 | Perforated |
| 8,809 | 8,955 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,210 | 12.25 | 180 S |
| 7 | 3,452 | 8.75 | 450 S |
| 7 | 8,180 | 8.75 | 250 S |
| 2.375 | 8,565 | — | — |
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 | Jan 26, 1998 | Dec 18, 1997 | Yes |
| 00 | Oct 30, 1989 | Sep 15, 1989 | — |
| 00 | Oct 4, 1989 | — | — |
| 00 | Jan 12, 1984 | May 16, 1979 | — |
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 42-287-30403 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-287-30403 → 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/28730403, documented in the API reference.