WELL · 42-287-31276 · DISTRICT 3
Mersiovsky #1RE
Lee County · Giddings (Austin Chalk-3) field · Horizontal · Sidetrack
Mersiovsky #1RE (API 42-287-31276) is a horizontal well in Lee County operated by Magnolia Oil & Gas Operating LLC, completed August 15, 1982.
The RRC has issued 2 drilling permits (amended twice) between 1982 and 2003, permitted to 11,000 ft.
It was permitted by Anadarko E&P Company LP and has since transferred to Magnolia Oil & Gas Operating LLC on the wellbore schedule.
Completion filings report 2 formation tops, including Pecan Gap, Austin Chalk.
Its lease has reported 92.1K barrels of oil and 337K mcf of gas since January 1993, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Magnolia Oil & Gas Operating LLC
Permitted by Anadarko E&P Company LP; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Mar 4, 2026 · 615 permits on file · (713) 345-6206
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Magnolia Oil & Gas Operating LLC |
| Production reports | Magnolia Oil & Gas Operating LLCthrough Apr 2026 |
| Latest permit | Anadarko E&P Company LPJun 10, 2003 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,000
- total depth, ft
- 4
- permits on file
- Jun 10, 2003
- last permit issued
- Aug 15, 1982
- completed
- 92.1K
- cumulative oil, bbl
- 337K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 15, 1982
- Shut in
- —
- Plugged
- —
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 |
|---|---|---|---|---|---|---|
| Mersiovsky O-3-15903 | Giddings (Austin Chalk-3) | Magnolia Oil & Gas Operating LLC | 2 | 92.1K | 337K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 565 · prior 12 1,557(-64%)
Gas, mcf lease total
Last 12 months 1,712 · prior 12 4,726(-64%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Patterson Petroleum, Inc.Jan 1993 → Jul 1997
- 2Anchor Operating Co.Sep 1997 → Apr 2003
- 3Anadarko E&P Company LPJul 2003 → Jul 2007
- 4Enervest Operating, L.L.C.Aug 2007 → Jul 2018
- 5Magnolia Oil & Gas Operating LLCAug 2018 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 532845-97 | Recompletion · sidetrack | Anadarko E&P Company LP | Sep 29, 2003 | Jun 10, 2003 | — | 8,500 |
| 532845-98 | Recompletion · sidetrack | Anadarko E&P Company LP | Jun 19, 2003 | Jun 10, 2003 | Jun 12, 2003 | 11,000 |
| 532845-99 | Recompletion · sidetrack | Anadarko E&P Company LP | Jun 9, 2003 | Jun 10, 2003 | — | 11,000 |
| 165944-99 | Drill | Par Producing Company | Jul 9, 1982 | Jul 9, 1982 | Jul 12, 1982 | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-15903 | — | — | — | — |
| — | — O-3-15903 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 396 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Pecan Gap | 6,856 | -6,460 |
| Austin Chalk | 7,305 | -6,909 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,781 | 9,050 | Perforated |
| 8,050 | 10,325 | Perforated |
| 8,350 | 10,044 | Perforated |
| 8,745 | 8,837 | Perforated |
| — | 8,477 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 506 | 12.25 | 300 S |
| 9.625 | 506 | — | 300 S |
| 2.875 | 7,600 | — | — |
| 7 | 7,721 | — | 992 S |
| 7 | 7,732 | 8.75 | 410 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 | Dec 2, 2003 | Sep 30, 2003 | Yes |
| 00 | Nov 18, 2003 | Aug 23, 1982 | — |
| 00 | Jan 12, 1984 | Aug 23, 1982 | — |
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 42-287-31276 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-287-31276 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). 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/28731276, documented in the API reference.