WELL · 42-287-31804 · DISTRICT 3
Sylvia #1
Lee County · Giddings (Austin Chalk-3) field · Horizontal
Sylvia #1 (API 42-287-31804) is a horizontal well in Lee County operated by Magnolia Oil & Gas Operating LLC, completed October 9, 1994.
The RRC has issued 2 drilling permits between 1985 and 1994, permitted to 9,600 ft.
It was permitted by Gemini Exploration Company and has since transferred to Magnolia Oil & Gas Operating LLC on the wellbore schedule.
Completion filings report 6 formation tops, including Navarro, Pecan Gap, Malbrook, Austin Chalk.
Its 2 leases have reported 103K barrels of oil and 1.27M mcf of gas since October 1994, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Magnolia Oil & Gas Operating LLC
Permitted by Gemini Exploration Company; 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 | Gemini Exploration CompanySep 1, 1994 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,600
- total depth, ft
- 2
- permits on file
- Sep 1, 1994
- last permit issued
- Oct 9, 1994
- completed
- 103K
- cumulative oil, bbl
- 1.27M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 1994 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 9, 1994
- 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 2 leases 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 |
|---|---|---|---|---|---|---|
| Sylvia G-3-297482 | Giddings (Austin Chalk, Gas) | Magnolia Oil & Gas Operating LLC | 1 | 0 | 10.8K | Nov 2023 – Jul 2026 |
| Sylvia O-3-22538 | Giddings (Austin Chalk-3) | Magnolia Oil & Gas Operating LLC | 1 | 103K | 1.26M | Oct 1994 – Jul 2026 |
Gas, mcf lease total
Last 12 months 2,459 · prior 12 4,364(-44%)
Oil, barrels lease total
Last 12 months 0 · prior 12 0
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Gemini Exploration CompanyOct 1994 → Apr 1995
- 2Union Pacific Austin Chalk Co.May 1995 → Jan 2001
- 3Rme Austin Chalk CompanyFeb 2001 → Nov 2002
- 4Anadarko Austin Chalk CompanyDec 2002 → Feb 2006
- 5Anadarko E&P Company LPMar 2006 → Jul 2007
- 6Enervest Operating, L.L.C.Aug 2007 → May 2018
- 7Magnolia Oil & Gas Operating LLCOct 2018 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 427644-99 | Reenter | Gemini Exploration Company | Sep 1, 1994 | Sep 1, 1994 | Sep 2, 1994 | 9,100 |
| 276182-99 | Drill | Sha-Jam Operating Corp. | May 29, 1985 | May 29, 1985 | — | 9,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-297482 | — | — | — | — |
| — | — O-3-22538 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 348 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| NavarroNAVARRO A | 6,305 | -5,957 |
| Pecan Gap | 7,750 | -7,402 |
| Pecan Gap | 7,756 | -7,408 |
| Malbrook | 7,800 | -7,452 |
| Austin Chalk | 8,295 | -7,947 |
| Austin Chalk | 8,302 | -7,954 |
| Eagle FordEAGLEFORD | 9,070 | -8,722 |
| TaylorTAYLOR SAND | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,302 | 9,991 | Perforated |
| 8,803 | 9,064 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 4,122 | 12.25 | 1,300 S |
| 5.5 | 8,316 | 7.875 | 210 S |
| 5.5 | 8,345 | 7.051 | 300 S |
| 5.5 | 8,345 | 7.875 | 300 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 | Aug 5, 2024 | Nov 28, 2023 | — |
| 00 | Nov 16, 1994 | Oct 14, 1994 | — |
| 00 | Oct 31, 1994 | — | — |
| 00 | Sep 18, 1985 | Aug 13, 1985 | — |
| 00 | Sep 12, 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 42-287-31804 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-287-31804 → 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/28731804, documented in the API reference.