WELL · 42-287-31656 · DISTRICT 3
Michalk #1
Lee County · Giddings (Austin Chalk-3) field · Horizontal · Sidetrack
Michalk #1 (API 42-287-31656) is a horizontal well in Lee County operated by Great West Energy & Expl. Inc., completed August 11, 1984.
The RRC has issued 2 drilling permits between 1984 and 1995, permitted to 9,800 ft.
Completion filings report 8 formation tops, including Navarro, Pecan Gap, Austin Chalk, Eagle Ford.
Its 2 leases have reported 20.2K barrels of oil and 43.8K mcf of gas since January 1993, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Great West Energy & Expl. Inc.
Addison, TX · P-5 Y, filed Mar 2, 2007 · 32 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Great West Energy & Expl. Inc. |
| Production reports | Ironroc Energythrough Jan 2021 |
| Latest permit | Great West Energy & Expl., Inc.Jul 3, 1995 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,800
- total depth, ft
- 2
- permits on file
- Jul 3, 1995
- last permit issued
- Aug 11, 1984
- completed
- 20.2K
- cumulative oil, bbl
- 43.8K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 11, 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 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 |
|---|---|---|---|---|---|---|
| State of Texas/Kuehn OL Unit #1 O-3-22818 | Giddings (Austin Chalk-3) | Ironroc Energy | 1 | 19.5K | 43.8K | Aug 1995 – Jul 2026 |
| Michalk O-3-17999 | Giddings (Austin Chalk-3) | Great West Energy & Expl., Inc. | 1 | 702 | 17 | Jan 1993 – Mar 2008 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Bass PetroleumJan 1993 → May 1994
- 2Great West Energy & Expl., Inc.Aug 1995 → Dec 1996
- 3Stanton Mineral Development IncApr 1999 → Jan 2002
- 4Atkinson Energy CorporationFeb 2002 → Sep 2002
- 5Square One CorporationApr 2004 → Nov 2011
- 6Ironroc EnergyNov 2019 → Jan 2021
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 436539-99 | Recompletion · sidetrack | Great West Energy & Expl., Inc. | Jun 5, 1995 | Jul 3, 1995 | Jul 14, 1995 | 9,235 |
| 242376-99 | Drill | Santa FE Minerals, Inc. | Jun 29, 1984 | Jun 18, 1984 | Jul 3, 1984 | 9,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-17999 | — | — | — | — |
| — | — O-3-22818 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 468 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| NavarroNAVARRO #1 | 6,240 | -5,772 |
| NavarroTOP NAVARRO #2 | 6,265 | -5,797 |
| NavarroNAVARRO #2 | 6,875 | -6,407 |
| Pecan Gap | 7,773 | -7,305 |
| Austin Chalk | 8,180 | -7,712 |
| Eagle FordEAGLEFORD | 8,945 | -8,477 |
| False Buda | 9,090 | -8,622 |
| BudaBUDA RESERVOIR | 9,120 | -8,652 |
| Del Rio | 9,160 | -8,692 |
| Georgetown | 9,185 | -8,717 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,515 | 10,980 | Perforated |
| 8,576 | 10,762 | Perforated |
| 8,788 | 8,932 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 3,971 | 12.25 | 950 S |
| 5.5 | 9,225 | 8.75 | 500 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 | Nov 22, 1999 | Oct 15, 1999 | — |
| 00 | Dec 11, 1995 | Sep 21, 1995 | Yes |
| 00 | Nov 20, 1995 | Oct 15, 1984 | — |
| 00 | Oct 31, 1984 | Oct 15, 1984 | — |
| 00 | Oct 24, 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 42-287-31656 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-287-31656 → 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/28731656, documented in the API reference.