WELL · 42-055-34878 · DISTRICT 1
Tiller T. A. #4
Caldwell County · Salt Flat field · Shut IN · Vertical
Tiller T. A. #4 (API 42-055-34878) is a well in Caldwell County operated by Texian Operating Company LLC, completed November 11, 2007 and listed as shut in on the RRC schedule, shut in April 1, 2010.
The RRC has issued one drilling permit, issued September 28, 2007, permitted to 2,651 ft.
It was permitted by Titan Exploration, LLC and has since transferred to Texian Operating Company LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Austin Chalk, Eagle Ford, Buda, Del Rio.
Its lease has reported 708 barrels of oil since March 2008, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Titan Exploration, LLC; the EWA schedule now lists a different operator.
- Based in
- Irving, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Jun 12, 2026
- Phone
- (817) 633-7777
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Texian Operating Company LLC |
| Production reports | North South Oil, LLCthrough Mar 2010 |
| Latest permit | Titan Exploration, LLCSep 28, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 2,651
- total depth, ft
- 1
- permits on file
- Sep 28, 2007
- last permit issued
- Nov 11, 2007
- completed
- 708
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 2008 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 11, 2007
- Shut in
- Apr 1, 2010
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Tiller, T. A. O-1-14911 | Salt Flat | Texian Operating Company, LLC | 2 | 708 | 0 | Mar 2008 – Jul 2026 |
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.
- 1Titan Exploration, LLCMar 2008 → Apr 2009
- 2North South Oil, LLCJul 2009 → Mar 2010
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 646092-99 | Drill | Titan Exploration, LLC | Sep 14, 2007 | Sep 28, 2007 | Oct 30, 2007 | 2,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Nov 11, 2007 | Tiller T. A. O-1-14911 | Salt Flat | Texian Operating Company LLC | Shut IN · shut in Apr 1, 2010 | 2,651 |
Formation tops
As filed on W-2/G-1. Subsea from 368 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 2,230 | -1,862 |
| Eagle FordEAGLEFORD | 2,490 | -2,122 |
| Buda | 2,500 | -2,132 |
| Del Rio | 2,585 | -2,217 |
| Georgetown | 2,600 | -2,232 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,651 | — | Open hole |
| — | 2,651 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 5.5 | 2,650 | 7.875 | 346 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 5, 2008 | Mar 28, 2008 | Yes |
| 00 | May 6, 2008 | — | — |
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 42-055-34878 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-055-34878 → 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/05534878, documented in the API reference.