WELL · 42-287-31471 · DISTRICT 3
Coffield-Osage #1RE
Lee County · Giddings (Austin Chalk-3) field · Horizontal · Sidetrack
Coffield-Osage #1RE (API 42-287-31471) is a horizontal well in Lee County operated by Magnolia Oil & Gas Operating LLC, completed August 16, 1984.
The RRC has issued 3 drilling permits (amended once) between 1983 and 2002, permitted to 10,000 ft.
It was permitted by Rme Austin Chalk Company and has since transferred to Magnolia Oil & Gas Operating LLC on the wellbore schedule.
Completion filings report 6 formation tops, including Austin Chalk, Eagle Ford, False Buda, Buda.
Its lease has reported 189K barrels of oil and 867K mcf of gas since January 1993, last reporting in July 2026. The lease carries 5 wells, so these are lease totals, not this well alone.
Operator of record
Magnolia Oil & Gas Operating LLC
Permitted by Rme Austin Chalk 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 | Rme Austin Chalk CompanyFeb 28, 2002 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,000
- total depth, ft
- 4
- permits on file
- Feb 28, 2002
- last permit issued
- Aug 16, 1984
- completed
- 189K
- cumulative oil, bbl
- 867K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 16, 1984
- 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 5 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Coffield-Osage O-3-17867 | Giddings (Austin Chalk-3) | Magnolia Oil & Gas Operating LLC | 5 | 189K | 867K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 2 · prior 12 57(-96%)
Gas, mcf lease total
Last 12 months 1,656 · prior 12 1,029(+61%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Rim Operating, Inc.Jan 1993 → Nov 1993
- 2Gemini Exploration CompanyDec 1993 → Apr 1995
- 3Union Pacific Austin Chalk Co.May 1995 → Jan 2001
- 4Rme Austin Chalk CompanyFeb 2001 → Nov 2002
- 5Anadarko Austin Chalk CompanyDec 2002 → Feb 2006
- 6Anadarko E&P Company LPMar 2006 → Jul 2007
- 7Enervest Operating, L.L.C.Aug 2007 → Jul 2018
- 8Magnolia Oil & Gas Operating LLCAug 2018 → Jul 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 517103-99 | Recompletion · sidetrack | Rme Austin Chalk Company | Jan 25, 2002 | Feb 28, 2002 | Apr 23, 2002 | 9,500 |
| 447567-98 | Recompletion · sidetrack | Union Pacific Austin Chalk Co. | Aug 29, 1996 | May 3, 1996 | — | 9,500 |
| 447567-99 | Recompletion · sidetrack | Union Pacific Austin Chalk Co. | Apr 29, 1996 | May 3, 1996 | Jun 8, 1996 | 9,500 |
| 209903-99 | Drill | General Production Company, Inc. | Aug 26, 1983 | Sep 6, 1983 | Jul 17, 1984 | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-17867 | — | — | — | — |
| — | — O-3-17867 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 323 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 8,430 | -8,107 |
| Eagle FordEAGLEFORD | 9,130 | -8,807 |
| False Buda | 9,322 | -8,999 |
| BudaBUDA RESERVOIR | 9,354 | -9,031 |
| Del Rio | 9,385 | -9,062 |
| Georgetown | 9,408 | -9,085 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,763 | 10,192 | Perforated |
| 8,793 | 11,235 | Perforated |
| 8,960 | 9,138 | Perforated |
| 9,510 | 10,930 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 2,718 | 12.25 | 645 sx |
| 7 | 9,468 | 8.75 | 500 sx |
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 28, 2002 | Jun 27, 2002 | Yes |
| 00 | Oct 8, 1996 | Aug 29, 1996 | Yes |
| 00 | Oct 2, 1996 | Aug 22, 1984 | — |
| 00 | Sep 10, 1984 | Aug 22, 1984 | — |
| 00 | Sep 1, 1984 | Aug 22, 1984 | — |
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 42-287-31471 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-287-31471 → 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/28731471, documented in the API reference.