TEXAS · WELLS · DE WITT COUNTY · API 42-123-31763 · DISTRICT 02
Ralls Unit #1
De Witt County · Thomaston (Yegua 4900) field · Vertical
Ralls Unit #1 (API 42-123-31763) is a plugged well in De Witt County, plugged June 6, 2003, last operated by Prime Operating Company.
The RRC has issued 3 drilling permits between 1994 and 2001, permitted to 8,200 ft.
Completion filings report 3 formation tops, including Frio, Yegua, Wilcox.
Its 2 leases have reported 3.6K barrels of oil and 593K mcf of gas since January 1995, last reporting in October 2003. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jan 29, 2026
- Permits on file
- 595
- Phone
- (432) 682-5600
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Prime Operating Company |
| Production reports | Prime Operating Companythrough Jun 2002 |
| Latest permit | Prime Operating CompanyJun 20, 2001 |
- 8,200
- total depth, ft
- 3
- permits on file
- Jun 20, 2001
- last permit issued
- May 22, 2001
- completed
- 3.6K
- cumulative oil, bbl
- 593K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1995 THROUGH Oct 2003
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 22, 2001
- Shut in
- —
- Plugged
- Jun 6, 2003
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; they carry 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Ralls Unit O-2-8147 | Thomaston (Yegua 4900) | Prime Operating Company | 2 | 3.6K | 122K | Nov 1995 – Oct 2003 |
| Ralls Unit G-2-153222 | Thomaston (Wilcox a-2 Seg B) | Prime Operating Company | 1 | 0 | 471K | Jan 1995 – Jun 2003 |
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.
- 1Prime Operating CompanyMar 1995 → Jun 2002
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 510389-99 | Recompletion | Prime Operating Company | Jun 18, 2001 | Jun 20, 2001 | May 9, 2001 | 8,050 |
| 444156-99 | Recompletion | Prime Operating Company | Jan 26, 1996 | Feb 7, 1996 | Oct 29, 1994 | 8,050 |
| 429331-99 | Drill | Prime Operating Company | Oct 21, 1994 | Oct 21, 1994 | Oct 29, 1994 | 8,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 22, 2001 | Ralls Unit O-2-8147 | Thomaston (Yegua 4900) | Prime Operating Company | Plugged | — |
| May 22, 2001 | Ralls Unit O-2-8147 | Thomaston (Yegua 4900) | Prime Operating Company | Plugged | — |
| Nov 17, 1995 | Ralls Unit O-2-8147 | Thomaston (Yegua 4900) | Prime Operating Company | Plugged | — |
| Jan 27, 1995 | Ralls Unit G-2-153222 | Thomaston (Wilcox a-2 Seg B) | Prime Operating Company | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 138 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,834 | 4,844 | Perforated |
| 4,834 | 4,856 | Perforated |
| 4,848 | 4,856 | Perforated |
| 7,804 | 7,820 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,008 | 12.25 | 393 S |
| 4.5 | 8,050 | — | 690 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 | Oct 5, 2001 | Jul 2, 2001 | Yes |
| 00 | Aug 9, 2001 | Mar 18, 1996 | Yes |
| 00 | Apr 17, 1996 | Mar 18, 1996 | Yes |
| 00 | Mar 28, 1996 | — | — |
| 00 | May 10, 1995 | Feb 28, 1995 | Yes |
| 00 | Mar 13, 1995 | — | — |
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 42-123-31763 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-123-31763 → 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/12331763, documented in the API reference.