WELL · 42-135-37739 · DISTRICT 8
Jars Cowden #1
Ector County · Jars (Ellenburger) field · Shut IN · Vertical
Jars Cowden #1 (API 42-135-37739) is a well in Ector County operated by Occidental Permian Ltd., completed August 28, 1999 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit, issued December 21, 1998, permitted to 10,000 ft.
It was permitted by Altura Energy Ltd. and has since transferred to Occidental Permian Ltd. on the wellbore schedule.
Completion filings report 6 formation tops, including Rustler, San Andres, Clear Fork, Pennsylvanian.
Its lease has reported 240K barrels of oil and 95.3K mcf of gas since August 1999, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Altura Energy Ltd.; the EWA schedule now lists a different operator.
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 | Occidental Permian Ltd. |
| Production reports | Occidental Permian Ltd.through Sep 2025 |
| Latest permit | Altura Energy Ltd.Dec 21, 1998 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,000
- total depth, ft
- 1
- permits on file
- Dec 21, 1998
- last permit issued
- Aug 28, 1999
- completed
- 240K
- cumulative oil, bbl
- 95.3K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 1999 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Aug 28, 1999
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 lease this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Jars, Cowden O-10-36089 | Jars (Ellenburger) | Occidental Permian Ltd. | 2 | 240K | 95.3K | Aug 1999 – Jul 2026 |
Oil, barrels lease total
Last 12 months 62 · prior 12 367(-83%)
Gas, mcf lease total
Last 12 months 128 · prior 12 662(-81%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Altura Energy Ltd.Aug 1999 → Apr 2000
- 2Occidental Permian Ltd.May 2000 → Sep 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 481636-99 | Drill | Altura Energy Ltd. | Dec 18, 1998 | Dec 21, 1998 | Jul 9, 1999 | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-36089 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,178 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Rustler | 1,479 | 1,699 |
| San Andres | 3,989 | -811 |
| Clear ForkCLEARFORK | 5,350 | -2,172 |
| PennsylvanianPENN DETRITAL | 7,715 | -4,537 |
| Simpson | 9,101 | -5,923 |
| Ellenbuger | 9,808 | -6,630 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,780 | 9,852 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,479 | 12.25 | 790 S |
| 5.5 | 9,780 | 7.875 | 2,625 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 28, 1999 | Sep 20, 1999 | Yes |
| 00 | Oct 14, 1999 | — | — |
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 42-135-37739 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-135-37739 → 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.
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/13537739, documented in the API reference.