TEXAS · WELLS · ECTOR COUNTY · API 42-135-33690 · DISTRICT 7B
Dora Roberts Ranch Unit #S03
Ector County · Headlee (Wolfcamp) field · Vertical
Dora Roberts Ranch Unit #S03 (API 42-135-33690) is a plugged well in Ector County, plugged June 5, 2013, last operated by Oxy USA Inc..
The RRC has issued 3 drilling permits between 1981 and 1983, permitted to 10,850 ft.
It was permitted by Cities Service Oil & Gas Corp. and has since transferred to Oxy USA Inc. on the wellbore schedule.
Completion filings report 2 formation tops, including Wolfcamp, Pennsylvania.
Its 3 leases have reported 8.28M barrels of oil and 40.4M mcf of gas since January 1993, last reporting volume in April 2026. The leases carry 263 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Cities Service Oil & Gas Corp.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jan 26, 2026
- Permits on file
- 3,316
- Phone
- (713) 215-7000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | OXY USA Inc. |
| Production reports | Continental Resources, Inc.through Apr 2026 |
| Latest permit | Cities Service Oil & Gas Corp.Jun 21, 1983 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,850
- total depth, ft
- 3
- permits on file
- Jun 21, 1983
- last permit issued
- Oct 10, 1983
- completed
- 8.28M
- cumulative oil, bbl
- 40.4M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 10, 1983
- Shut in
- —
- Plugged
- Jun 5, 2013
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 3 leases this well is completed on; they carry 263 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Dora Roberts Ranch Unit O-10-34635 | Dora Roberts (Consolidated) | Continental Resources, Inc. | 244 | 8.26M | 39.5M | Oct 1995 – Apr 2026 |
| Dora Roberts Ranch Unit O-10-15850 | Dora Roberts (Pennsylvanian) | OXY USA Inc. | 18 | 26.2K | 837K | Jan 1993 – Sep 1995 |
| Dora Roberts Ranch Unit O-10-28588 | Headlee (Wolfcamp) | OXY USA Inc. | 1 | 0 | 0 | Jan 1993 – — |
Oil, barrels lease total
Last 12 months 137,463 · prior 12 179,155(-23%)
Gas, mcf lease total
Last 12 months 633,491 · prior 12 872,157(-27%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1OXY USA Inc.Jan 1993 → Dec 2000
- 2OXY USA WTP LPJan 2001 → Oct 2023
- 3Continental Resources, Inc.Nov 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 198881-99 | Recompletion | Cities Service Oil & Gas Corp. | Nov 14, 1983 | Jun 21, 1983 | — | 10,800 |
| 121345-99 | Drill | Cities Service Company | Jun 16, 1981 | Jun 16, 1981 | — | 10,850 |
| 120391-99 | Drill | Cities Service Company | May 29, 1981 | May 29, 1981 | — | 10,850 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 10, 1983 | Dora Roberts Ranch Unit O-10-28588 | Headlee (Wolfcamp) | OXY USA Inc. | Plugged | — |
| Jun 24, 1981 | Dora Roberts Ranch Unit O-10-15850 | Dora Roberts (Pennsylvanian) | OXY USA Inc. | Plugged | — |
| Jun 24, 1981 | Dora Roberts Ranch Unit O-10-34635 | Dora Roberts (Consolidated) | Continental Resources Inc. | Plugged | — |
| Jun 24, 1981 | Dora Roberts Ranch Unit O-10-34635 | Dora Roberts (Consolidated) | Continental Resources Inc. | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,856 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Wolfcamp | 9,100 | -6,244 |
| Pennsylvania | 10,314 | -7,458 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,100 | 9,415 | Perforated |
| 9,100 | 9,832 | Perforated |
| 9,644 | 9,832 | Perforated |
| 10,314 | 10,694 | Perforated |
| 10,467 | 10,694 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 305 | 17.5 | 325 S |
| 8.625 | 5,609 | 12.25 | 2,500 S |
| 2.875 | 10,712 | — | — |
| 5.5 | 10,800 | 7.875 | 1,580 S |
| 5.5 | 10,800 | — | 1,580 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jan 27, 1999 | Dec 3, 1998 | — |
| 00 | Oct 18, 1995 | Aug 28, 1981 | — |
| 00 | Oct 29, 1984 | Oct 5, 1984 | — |
| 00 | Feb 29, 1984 | Nov 7, 1983 | — |
| 00 | Feb 24, 1984 | Nov 7, 1983 | — |
| 00 | Jan 12, 1984 | Aug 28, 1981 | — |
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 42-135-33690 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-135-33690 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it. The University Lands library has no per-well link: then paste it into its 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/13533690, documented in the API reference.