WELL · 42-371-35128 · DISTRICT 8
Koller #1
Pecos County · Lehn-Apco (1600) field · Vertical
Koller #1 (API 42-371-35128) is a plugged well in Pecos County, plugged January 29, 2022, last operated by N & O Oil CO..
The RRC has issued one drilling permit, issued September 6, 1984, permitted to 1,850 ft.
It was permitted by Lawrence, C. F. & Assoc. Inc. and has since transferred to N & O Oil CO. on the wellbore schedule.
Completion filings report 3 formation tops, including Yates, Seven Rivers, Queen.
Its lease has reported 367 barrels of oil and 51 mcf of gas since January 1993, last reporting in February 2022.
Operator of record
Permitted by Lawrence, C. F. & Assoc. Inc.; the EWA schedule now lists a different operator.
Imperial, TX · P-5 Y, filed Jan 5, 2026 · 3 permits on file · (432) 940-0073
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | N & O Oil Co. |
| Production reports | Diamond M Oil Co., Inc.through Apr 1998 |
| Latest permit | Lawrence, C. F. & Assoc. Inc.Sep 6, 1984 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 1,850
- total depth, ft
- 1
- permits on file
- Sep 6, 1984
- last permit issued
- Jan 21, 1985
- completed
- 367
- cumulative oil, bbl
- 51
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Feb 2022
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 21, 1985
- Shut in
- —
- Plugged
- Jan 29, 2022
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Koller O-10-29576 | Lehn-Apco (1600) | N & O Oil Co. | 1 | 367 | 51 | Jan 1993 – Feb 2022 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Lawrence, C. F. & Assoc. Inc.Jan 1993 → Jul 1994
- 2Riley Production, Inc.Aug 1994 → Dec 1996
- 3Diamond M Oil Co., Inc.Jan 1997 → Apr 1998
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 250586-99 | Drill | Lawrence, C. F. & Assoc. Inc. | Sep 4, 1984 | Sep 6, 1984 | — | 1,850 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-29576 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,426 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 1,125 | 1,301 |
| Seven Rivers7 RIVERS | 1,350 | 1,076 |
| Queen | 1,685 | 741 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,740 | 1,745 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 538 | 11 | 280 S |
| 5.5 | 1,830 | 7.875 | 350 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 | Feb 27, 1985 | Jan 31, 1985 | — |
| 00 | Feb 23, 1985 | — | — |
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 42-371-35128 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-371-35128 → 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/37135128, documented in the API reference.