WELL · 42-165-34993 · DISTRICT 8
Cedar Lake Unit #221R
Gaines County · Vertical
Cedar Lake Unit #221R (API 42-165-34993) is a disposal or injection well in Gaines County operated by Occidental Permian Ltd. under an active UIC permit.
The RRC has issued 3 drilling permits between 1996 and 2017, permitted to 8,700 ft.
Completion filings report 10 formation tops, including Yates, San Andres, Clear Fork, Clfk.
Its 3 leases have reported 52.7M barrels of oil and 120M mcf of gas since January 1993, last reporting in July 2026. The leases carry 426 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 56.7K barrels injected in the 12 months reported through October 2025; TexNet located 0 M2+ earthquakes within 10 km over the last two years.
Operator of record
Houston, TX · P-5 Y, filed Dec 4, 2025 · 6,251 permits on file · (713) 215-7000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Occidental Permian Ltd.through Apr 2026 |
| Latest permit | Occidental Permian Ltd.Dec 22, 2017 |
- 8,700
- total depth, ft
- 3
- permits on file
- Dec 22, 2017
- last permit issued
- —
- completed
- 52.7M
- cumulative oil, bbl
- 120M
- 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
32.855685, -102.266763
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Gaines 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 426 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cedar Lake Unit O-11-577 | Cedar Lake | Occidental Permian EOR, LLC | 424 | 52.7M | 120M | Jan 1993 – Jul 2026 |
| Arco - T.S. Riley O-11-67944 | Wildcat | Occidental Permian Ltd. | 1 | 0 | 0 | Jun 1996 – Jun 2019 |
| Arco - T.S. Riley O-11-67927 | Wildcat | Arco Permian | 1 | 0 | 0 | Jun 1996 – Jul 1998 |
Oil, barrels lease total
Last 12 months 507,975 · prior 12 557,712(-9%)
Gas, mcf lease total
Last 12 months 415,475 · prior 12 504,929(-18%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Amoco Production CompanyJan 1993 → Feb 1997
- 2Altura Energy Ltd.Mar 1997 → Apr 2000
- 3Occidental Permian Ltd.May 2000 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 834434-99 | Recompletion | Occidental Permian Ltd. | Dec 19, 2017 | Dec 22, 2017 | Nov 12, 2018 | 5,800 |
| 477999-99 | Reclass | Altura Energy Ltd. | Jul 15, 1998 | Jul 17, 1998 | — | 8,700 |
| 447409-99 | Drill | Arco Permian | Apr 24, 1996 | Apr 25, 1996 | May 17, 1996 | 8,700 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-577 | — | — | — | — |
| — | — O-11-67927 | — | — | — | — |
| — | — O-11-67944 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,072 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,830 | 242 |
| San Andres | 4,270 | -1,198 |
| Clear ForkCLEARFORK | 5,708 | -2,636 |
| Clfk | 5,708 | -2,636 |
| U. Spraberry | 7,141 | -4,069 |
| U. Sprby | 7,141 | -4,069 |
| L. Spraberry | 7,974 | -4,902 |
| L. Sprby | 7,974 | -4,902 |
| Wlfcmpreef | 8,632 | -5,560 |
| WolfcampWOLFCAMP REEF | 8,632 | -5,560 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,636 | 4,847 | Perforated |
| 5,230 | 8,680 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 511 | 17.5 | 400 S |
| 8.625 | 5,230 | 11 | 1,650 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 13, 2019 | May 7, 2019 | — |
| 00 | Nov 15, 2010 | Apr 1, 1998 | Yes |
| 00 | Jul 15, 1998 | Apr 1, 1998 | Yes |
| 00 | Jul 14, 1998 | — | — |
| 00 | May 26, 1998 | — | — |
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 42-165-34993 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-165-34993 → 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.
Cedar Lake Unit42-165-38682
2.0 KM · Occidental Permian Ltd. · Section with this well →
| Santa Rosa | 1,530 | 1,556 |
| Rustler | 2,020 | 1,066 |
| Yates | 2,827 | 259 |
| Seven Rivers | 3,056 | 30 |
| Queen | 3,611 | -525 |
| Greyburg | 3,996 | -910 |
| San Andres | 4,245 | -1,159 |
| Glorieta | — |
10 TOPS · FIRST 8
Cedar Lake Unit42-165-38683
2.1 KM · Occidental Permian Ltd. · Section with this well →
| Santa Rosa | 1,544 | 1,558 |
| Rustler | 2,029 | 1,073 |
| Yates | 2,849 | 253 |
| Seven Rivers | 3,076 | 26 |
| Queen | 3,629 | -527 |
| Greyburg | 4,004 | -902 |
| San Andres | 4,262 | -1,160 |
| Glorieta | — |
10 TOPS · FIRST 8
Cedar Lake Unit42-165-38681
3.0 KM · Occidental Permian Ltd. · Section with this well →
| Rustler | 2,040 | 1,061 |
| Yates | 2,875 | 226 |
| Seven Rivers | 3,102 | -1 |
| Queen | 3,651 | -550 |
| Greyburg | 4,022 | -921 |
| San Andres | 4,272 | -1,171 |
| Glorieta | — | |
| Wichita-Albany | — |
10 TOPS · FIRST 8
Cedar Lake Unit42-165-38684
4.9 KM · Occidental Permian Ltd. · Section with this well →
| Santa Rosa | 1,475 | 1,605 |
| Rustler | 2,016 | 1,064 |
| Yates | 2,900 | 180 |
| Seven Rivers | 3,124 | -44 |
| Queen | 3,683 | -603 |
| Greyburg | 4,052 | -972 |
| San Andres | 4,309 | -1,229 |
| Clear Fork | — |
10 TOPS · FIRST 8
Collett, Eugenia42-165-38686
5.1 KM · Occidental Permian Ltd. · Section with this well →
| Santa Rosa | 1,520 | 1,561 |
| Yates | 2,919 | 162 |
| Seven Rivers | 3,156 | -75 |
| Queen | 3,723 | -642 |
| San Andres | 4,358 | -1,277 |
| San Angelo | — | |
| Spraberry | — | |
| Wichita-Albany | — |
10 TOPS · FIRST 8
Collett, Eugenia42-165-20004
5.1 KM · Occidental Permian Ltd. · Section with this well →
| Yates | 2,052 | 1,037 |
| Tansill | 2,750 | 339 |
| Yates | 2,908 | 181 |
| Queen | 3,750 | -661 |
| Grayburg | 4,100 | -1,011 |
| San Andres | 4,162 | -1,073 |
| San Andres | 4,350 | -1,261 |
| Clear Fork | — |
14 TOPS · FIRST 8
Young 3742-165-38622
5.2 KM · Adventure Operating Company, LLC · Section with this well →
| Yates | 2,970 | 220 |
| Yates | 2,970 | 220 |
| Seven Rivers | 3,135 | 55 |
| Queen | 3,750 | -560 |
| San Andres | 4,390 | -1,200 |
| San Andres | 4,390 | -1,200 |
| Glorieta | — | |
| Spraberry | — |
12 TOPS · FIRST 8
Collett, Eugenia42-165-20006
5.4 KM · Occidental Permian Ltd. · Section with this well →
| Rustler | 2,061 | 1,034 |
| Queen | 3,750 | -655 |
| San Andres | 4,275 | -1,180 |
| San Andres | 4,275 | -1,180 |
| Spraberry | — | |
| Seven Rivers | — | |
| San Angelo | — | |
| Clear Fork | — |
12 TOPS · FIRST 8
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 56.7K
- bbl, last 12 reported months
- 477K
- bbl, all reported
- Oct 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000085289 | H-1 Injection | Active | 5,000 | 2,100 | 4,200–5,300 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 56,668 · prior 12 45,333(+25%)
TexNet catalog via USGS
Seismicity near this well
- 0
- M2+ events within 10 km, last 2 years
- —
- largest
A proximity count, not an attribution. How to read it →
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/16534993, documented in the API reference.