WELL · 42-135-05000 · DISTRICT 8
Ratliff Sallie W. #4X
Ector County · Headlee N. (Devonian) field · Directional
Ratliff Sallie W. #4X (API 42-135-05000) is a well in Ector County operated by Slant Operating LLC, completed January 21, 2024.
The RRC has issued 4 drilling permits (amended twice) between 1990 and 2025, permitted to 13,750 ft.
Completion filings report 4 formation tops, including Pennsylvanian, Dev, Devonian, Ellenburger.
Its 3 leases have reported 500K barrels of oil and 4.4M mcf of gas since January 1993, last reporting in July 2026. The leases carry 14 wells, so these are lease totals, not this well alone.
Operator of record
Lafayette, LA · P-5 Y, filed Oct 4, 2025 · 194 permits on file · (337) 534-0135
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Slant Operating LLC |
| Production reports | Slant Operating, LLCthrough Apr 2026 |
| Latest permit | Slant Operating, LLCApr 16, 2025 |
- 13,750
- total depth, ft
- 6
- permits on file
- Apr 16, 2025
- last permit issued
- Jan 21, 2024
- completed
- 500K
- cumulative oil, bbl
- 4.4M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 21, 2024
- Shut in
- —
- Plugged
- —
Surface location
31.956396, -102.365349
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Ector County.
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 14 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Ratliff, Sallie W. O-10-9963 | Headlee, N. (Devonian) | Slant Operating, LLC | 11 | 405K | 3.47M | Jan 1993 – Jul 2026 |
| Ratliff, Sallie W. O-10-32928 | Headlee, N. (Canyon) | Slant Operating, LLC | 2 | 93.7K | 929K | Jan 1993 – Jul 2026 |
| Ratliff, Sallie W. O-10-62916 | Ratliff (Penn.) | Slant Operating, LLC | 1 | 1.49K | 1.31K | Nov 2024 – Jul 2026 |
Oil, barrels lease total
Last 12 months 3,628 · prior 12 3,598(+1%)
Gas, mcf lease total
Last 12 months 5,558 · prior 12 4,675(+19%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Mobil Producing TX. & N.M. Inc.Jan 1993 → Jan 1996
- 2Eureka Prospecting CompanyFeb 1996 → Jun 2023
- 3Slant Operating, LLCJul 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 907422-99 | Recompletion | Slant Operating, LLC | Apr 14, 2025 | Apr 16, 2025 | Nov 7, 2024 | 13,700 |
| 826243-99 | Reenter | Eureka Prospecting Company | May 3, 2017 | May 16, 2017 | — | 13,700 |
| 466697-98 | Reenter | Eureka Prospecting Company | Sep 29, 1999 | Oct 4, 1999 | — | 11,000 |
| 466697-99 | Reenter | Eureka Prospecting Company | Aug 25, 1997 | Aug 26, 1997 | — | 13,750 |
| 374946-98 | Recompletion | Mobil Producing TX. & N.M. Inc. | Aug 23, 1990 | Jun 27, 1990 | Jun 30, 1990 | 11,800 |
| 374946-99 | Recompletion | Mobil Producing TX. & N.M. Inc. | Jun 27, 1990 | Jun 27, 1990 | — | 11,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-9963 | — | — | — | — |
| — | — O-10-9963 | — | — | — | — |
| — | — O-10-32928 | — | — | — | — |
| — | — O-10-62916 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,997 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| PennsylvanianPENN | 10,686 | -7,689 |
| Pennsylvanian | 10,686 | -7,689 |
| Dev | 11,733 | -8,736 |
| Devonian | 11,733 | -8,736 |
| Ellenburger | 13,450 | -10,453 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,890 | 10,998 | Perforated |
| 10,795 | 10,815 | Perforated |
| 12,006 | 12,118 | Perforated |
| 12,249 | 12,499 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 353 | 17.5 | 375 S |
| 13.375 | 353 | — | — |
| 9.625 | 4,910 | 12.25 | 2,100 S |
| 9.625 | 4,910 | — | — |
| 7.625 | 9,460 | 8.75 | 575 S |
| 7.625 | 9,460 | — | — |
| 7.625 | 9,480 | — | — |
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 | Apr 24, 2025 | Feb 26, 2025 | — |
| 00 | Feb 4, 2025 | Sep 13, 2024 | Yes |
| 00 | Dec 10, 1991 | Aug 27, 1990 | — |
| 00 | Nov 27, 1991 | — | — |
| 00 | Sep 6, 1985 | Aug 16, 1985 | — |
| 00 | Jan 12, 1984 | Apr 12, 1968 | — |
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 42-135-05000 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-135-05000 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. then paste it into their search.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Ratliff, Sallie W. "B"42-135-05003
0.5 KM · Eureka Prospecting Company · Section with this well →
| OE | 13,500 | -10,501 |
S.W. Ratliff 'A'42-135-40679
1.6 KM · Slant Operating, LLC · Section with this well →
| San Andres | 4,850 | -1,865 |
| Clear Fork | 7,253 | -4,268 |
| Spraberry | 8,420 | -5,435 |
| Wolfcamp | 8,420 | -5,435 |
| Canyon | 9,946 | -6,961 |
| Atoka | 10,500 | -7,515 |
| Devonian | 11,792 | -8,807 |
| Ellenburgers | 13,502 | -10,517 |
9 TOPS · FIRST 8
Eureka 31-43 C42-135-43980
1.7 KM · Slant Operating, LLC · Section with this well →
| Yates | 3,128 | -119 |
| Seven Rivers | 3,504 | -495 |
| San Andres | 5,022 | -2,013 |
| Glorieta | 6,242 | -3,233 |
| Clear Fork | 7,354 | -4,345 |
| Spraberry | 8,070 | -5,061 |
| Santa Rosa | — | |
| Queen | — |
10 TOPS · FIRST 8
Eureka 31-43 B42-135-43979
1.7 KM · Slant Operating, LLC · Section with this well →
| Yates | 3,136 | -127 |
| Seven Rivers | 3,498 | -489 |
| San Andres | 5,022 | -2,013 |
| Glorieta | 6,244 | -3,235 |
| Clear Fork | 7,359 | -4,350 |
| Spraberry | 8,072 | -5,063 |
| Queen | — | |
| Holt | — |
10 TOPS · FIRST 8
Eureka 31-43 A42-135-43978
1.7 KM · Slant Operating, LLC · Section with this well →
| Yates | 3,133 | -124 |
| Seven Rivers | 3,497 | -488 |
| San Andres | 5,022 | -2,013 |
| Glorieta | 6,256 | -3,247 |
| Clear Fork | 7,371 | -4,362 |
| Grayburg | — | |
| Holt | — | |
| Queen | — |
10 TOPS · FIRST 8
Ratliff A42-135-43189
2.2 KM · Reliance Energy, Inc. · Section with this well →
| Santa Rosa | 1,246 | 1,753 |
| Yates | 3,089 | -90 |
| Seven Rivers | 3,453 | -454 |
| Queen | 4,288 | -1,289 |
| Grayburg | 4,991 | -1,992 |
| San Andres | 5,543 | -2,544 |
| Clear Fork | 7,353 | -4,354 |
| Holt | — |
10 TOPS · FIRST 8
Ratliff F Unit42-135-43872
3.1 KM · COG Operating LLC · Section with this well →
| Santa Rosa | 1,121 | 1,870 |
| Yates | 3,198 | -207 |
| Seven Rivers | 3,798 | -807 |
| Queen | 4,041 | -1,050 |
| Grayburg | 4,141 | -1,150 |
| San Andres | 5,174 | -2,183 |
| Holt | 5,774 | -2,783 |
| Glorieta | 6,221 | -3,230 |
10 TOPS · FIRST 8
Ratliff F Unit42-135-43871
3.1 KM · COG Operating LLC · Section with this well →
| Santa Rosa | 1,121 | 1,870 |
| Yates | 3,198 | -207 |
| Seven Rivers | 3,798 | -807 |
| Queen | 4,041 | -1,050 |
| Grayburg | 4,141 | -1,150 |
| San Andres | 5,174 | -2,183 |
| Holt | 5,774 | -2,783 |
| Glorieta | 6,221 | -3,230 |
10 TOPS · FIRST 8
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/13505000, documented in the API reference.