WELL · 42-105-35223 · DISTRICT 7
Grierson-University SWD #1
Crockett County · Amiet (Penn Detrital) field · Vertical
Grierson-University Swd #1 (API 42-105-35223) is a plugged well in Crockett County, plugged November 10, 2004, last operated by Marathon Oil Company.
The RRC has issued 2 drilling permits (amended once) between 1986 and 1997, permitted to 10,200 ft.
It was permitted by Enron Oil & Gas Company and has since transferred to Marathon Oil Company on the wellbore schedule.
Completion filings report 9 formation tops, including Lwr. Queen, Grayburg, Sprby, Dean.
Operator of record
Permitted by Enron Oil & Gas Company; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Apr 4, 2026 · 3,707 permits on file · (800) 332-9449
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Marathon Oil Company |
| Production reports | none |
| Latest permit | Enron Oil & Gas CompanySep 12, 1997 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,200
- total depth, ft
- 3
- permits on file
- Sep 12, 1997
- last permit issued
- Oct 16, 1997
- completed
- 0
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 1997 THROUGH Dec 2004
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 16, 1997
- Shut in
- —
- Plugged
- Nov 10, 2004
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 |
|---|---|---|---|---|---|---|
| Grierson-University SWD O-9-14710 | Amiet (Penn Detrital) | Marathon Oil Company | 1 | 0 | 0 | Nov 1997 – Dec 2004 |
No volumes reported on these leases in the last three years.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 467085-98 | Reenter | Enron Oil & Gas Company | Sep 22, 1997 | Sep 12, 1997 | Sep 23, 1997 | 10,063 |
| 467085-99 | Reenter | Enron Oil & Gas Company | Sep 2, 1997 | Sep 12, 1997 | — | 10,063 |
| 295360-99 | Drill | Conoco Inc. | Jan 13, 1986 | Jan 14, 1986 | Feb 2, 1986 | 10,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-14710 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,562 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Lwr. Queen | 2,725 | -163 |
| GrayburgGRAYBURG/SAN ANDRES | 2,996 | -434 |
| Sprby | 5,610 | -3,048 |
| Dean | 6,812 | -4,250 |
| Wlfcmp | 6,914 | -4,352 |
| Strawn | 8,530 | -5,968 |
| PennsylvanianPENN DETRITAL | 8,790 | -6,228 |
| Fusselman | 9,442 | -6,880 |
| Ellenburger | 9,916 | -7,354 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,710 | 3,758 | Perforated |
| 3,774 | 3,798 | Perforated |
| 8,793 | 8,885 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 763 | 17.5 | 530 S |
| 5.5 | 4,117 | 13.375 | 1,260 S |
| 9.625 | 4,400 | 12.25 | 580 S |
| 5.5 | 10,063 | 8.75 | 960 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 9, 1998 | Nov 19, 1997 | — |
| 00 | Jan 23, 1998 | — | — |
| 00 | Jul 15, 1986 | Jun 30, 1986 | Yes |
| 00 | Jul 9, 1986 | — | — |
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 42-105-35223 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-105-35223 → 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
- 720K
- bbl, all reported
- Jun 2004
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000086760 | W-14 Disposal | Plugged Dec 3, 2004 | 1,500 | 1,200 | 3,630–4,100 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 0
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/10535223, documented in the API reference.