TEXAS · WELLS · ANDREWS COUNTY · API 42-003-38329 · DISTRICT 7B
Serio (Grayburg)unit #20
Andrews County · Serio (Grayburg) field · Producing · Vertical
Serio (Grayburg)Unit #20 (API 42-003-38329) is a well in Andrews County operated by Fasken Oil And Ranch Ltd., completed December 18, 1997 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued December 1, 1997, permitted to 5,850 ft.
Completion filings report 3 formation tops, including Rustler, Yates, Grayburg.
Its 2 leases have reported 2.97M barrels of oil and 369K mcf of gas since January 1993, last reporting volume in March 2026. The leases carry 86 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- Nov 14, 2025
- Permits on file
- 2,057
- Phone
- (432) 687-1777
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Fasken Oil and Ranch Ltd. |
| Production reports | Fasken Oil and Ranch, Ltd.through Mar 2026 |
| Latest permit | Fasken Oil and Ranch, Ltd.Dec 1, 1997 |
- 5,850
- total depth, ft
- 1
- permits on file
- Dec 1, 1997
- last permit issued
- Dec 18, 1997
- completed
- 2.97M
- cumulative oil, bbl
- 369K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Mar 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 18, 1997
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 86 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Fee -Y- O-10-23655 | Serio (Grayburg) | Fasken Oil and Ranch, Ltd. | 34 | 1.43M | 210K | Jan 1993 – Mar 2026 |
| Serio (Grayburg)unit O-10-37270 | Serio (Grayburg) | Fasken Oil and Ranch, Ltd. | 52 | 1.54M | 159K | May 2004 – Mar 2026 |
Oil, barrels lease total
Last 12 months 41,779 · prior 12 43,175(-3%)
Gas, mcf lease total
Last 12 months 3,960 · prior 12 3,860(+3%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Fasken, BarbaraJan 1993 → Dec 1995
- 2Fasken Oil and Ranch, Ltd.Jan 1996 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 470497-99 | Drill | Fasken Oil and Ranch, Ltd. | Nov 24, 1997 | Dec 1, 1997 | Dec 5, 1997 | 6,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Dec 18, 1997 | Serio (Grayburg)unit O-10-37270 | Serio (Grayburg) | Fasken Oil and Ranch Ltd. | Producing | 5,850 |
| Dec 18, 1997 | Serio (Grayburg)unit O-10-37270 | Serio (Grayburg) | Fasken Oil and Ranch Ltd. | Not on Schedule | — |
| Dec 18, 1997 | Fee -Y- O-10-23655 | Serio (Grayburg) | Fasken Oil and Ranch Ltd. | Not on Schedule | — |
| Dec 18, 1997 | Fee -Y- O-10-23655 | Serio (Grayburg) | Fasken Oil and Ranch Ltd. | Not on Schedule | — |
| — | Fee -Y- O-10-23655 | Serio (Grayburg) | Fasken Oil and Ranch Ltd. | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,940 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,739 | 4,748 | Perforated |
| 4,769 | 4,771 | Perforated |
| 4,782 | 4,810 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,694 | 12.25 | 850 S |
| 5.5 | 4,951 | 7.875 | 405 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jul 10, 2024 | Jan 5, 1998 | Yes |
| 00 | Jun 17, 2024 | Jan 5, 1998 | Yes |
| 00 | Jun 25, 2004 | — | — |
| 00 | Jun 22, 2004 | Jan 5, 1998 | Yes |
| 00 | Mar 24, 1998 | Jan 5, 1998 | Yes |
| 00 | Mar 17, 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 42-003-38329 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-003-38329 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it. The University Lands library has no per-well link: then paste it into its 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/00338329, documented in the API reference.