WELL · 42-135-34081 · DISTRICT 8
S.W. Ratliff -L- #1
Ector County · Vertical
S.W. Ratliff -L- #1 (API 42-135-34081) is a former disposal or injection well in Ector County, last operated by Cog Operating LLC; its UIC permit is no longer active.
The RRC has issued 2 drilling permits between 1982 and 2017, permitted to 13,800 ft.
Completion filings report 6 formation tops, including Yates, Spraberry, Strawn, Bend.
Its 2 leases have reported 433K barrels of oil and 3.75M mcf of gas since January 1993, last reporting in July 2026. The leases carry 12 wells, so these are lease totals, not this well alone.
Operator of record
Midland, TX · P-5 Y, filed May 4, 2026 · 4,568 permits on file · (432) 853-2355
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Slant Operating, LLCthrough Apr 2026 |
| Latest permit | COG Operating LLCMay 2, 2017 |
- 13,800
- total depth, ft
- 2
- permits on file
- May 2, 2017
- last permit issued
- —
- completed
- 433K
- cumulative oil, bbl
- 3.75M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- —
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 12 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 |
| S. W. Ratliff -L- O-10-35697 | Headlee, N. (Devonian) | COG Operating LLC | 1 | 28.4K | 274K | Mar 1998 – Jul 2026 |
Oil, barrels lease total
Last 12 months 1,192 · prior 12 1,031(+16%)
Gas, mcf lease total
Last 12 months 0 · prior 12 2,210(-100%)
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
- 3Rme Petroleum CompanyMar 2002 → Mar 2002
- 4Anadarko E&P Company LPDec 2002 → Nov 2004
- 5Merit Energy CompanyDec 2004 → Jul 2010
- 6PDC-WV-Co CorporationAug 2010 → Aug 2010
- 7PDC EnergySep 2010 → Jan 2012
- 8COG Operating LLCFeb 2012 → Jul 2015
- 9Slant Operating, LLCJul 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 825922-99 | Reclass | COG Operating LLC | Apr 26, 2017 | May 2, 2017 | — | 13,800 |
| 176273-99 | Drill | Mobil Producing TX. & N.M. Inc. | Nov 2, 1982 | Nov 2, 1982 | Nov 3, 1982 | 13,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-9963 | — | — | — | — |
| — | — O-10-35697 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,000 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,100 | 12,237 | Perforated |
| 12,260 | 12,320 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 468 | 17.5 | 750 S |
| 13.375 | 468 | — | — |
| 9.625 | 5,700 | 12.25 | 1,200 S |
| 9.625 | 5,700 | — | — |
| 2.375 | 12,004 | — | — |
| 5.5 | 13,800 | 8.75 | 2,000 S |
| 5.5 | 13,800 | — | — |
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 16, 2019 | Jun 20, 2019 | — |
| 00 | Apr 28, 1998 | Aug 27, 1986 | — |
| 00 | Sep 16, 1986 | Aug 27, 1986 | — |
| 00 | Jan 12, 1984 | Apr 21, 1983 | — |
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 42-135-34081 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-135-34081 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 0
- bbl, all reported
- —
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000115273 | H-1 Injection | Plugged Sep 26, 2024 | 25,000 | 5,980 | 11,960–13,822 |
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/13534081, documented in the API reference.