WELL · 42-167-31127 · DISTRICT 3
Stewart Maco #10
Galveston County · Gillock (Big Gas) field · Vertical
Stewart Maco #10 (API 42-167-31127) is a well in Galveston County operated by Union Expl. Partners Ltd., completed September 5, 1987.
The RRC has issued one drilling permit (amended twice), issued February 6, 1987, permitted to 8,050 ft.
Completion filings report 4 formation tops, including Frio, Big Gas, Ken Ben, Coast.
Its 2 leases have reported 268K barrels of oil and 267K mcf of gas since January 1993, last reporting in July 2026. The leases carry 6 wells, so these are lease totals, not this well alone.
Operator of record
Los Angeles, CA · P-5 Inactive, filed Nov 9, 1989 · 210 permits on file · (213) 977-7222
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Union Expl. Partners Ltd. |
| Production reports | Milagro Exploration, LLCthrough Mar 2014 |
| Latest permit | Union Expl. Partners, Ltd.Feb 6, 1987 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,050
- total depth, ft
- 3
- permits on file
- Feb 6, 1987
- last permit issued
- Sep 5, 1987
- completed
- 268K
- cumulative oil, bbl
- 267K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 5, 1987
- 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 6 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Stewart, Maco O-3-4721 | Gillock (Big Gas) | Progenies Operating LLC | 6 | 268K | 267K | Jan 1993 – Jul 2026 |
| — G-3-125671 | — | — | 0 | 0 | 0 | — |
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.
- 1Union Oil Company of CaliforniaJan 1993 → Jun 1994
- 2Medallion Production CompanyJul 1994 → Aug 1996
- 3Intercoast Oil and Gas CompanySep 1996 → Mar 1997
- 4KCS Medallion Resources, Inc.Apr 1997 → Oct 2001
- 5KCS Resources, Inc.Jan 2002 → Jun 2007
- 6Milagro Exploration, LLCApr 2008 → Mar 2014
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 325873-97 | Drill | Union Expl. Partners, Ltd. | Apr 22, 1987 | Feb 6, 1987 | — | 8,050 |
| 325873-98 | Drill | Union Expl. Partners, Ltd. | Mar 20, 1987 | Feb 6, 1987 | — | 8,050 |
| 325873-99 | Drill | Union Expl. Partners, Ltd. | Jan 27, 1987 | Feb 6, 1987 | — | 8,050 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-125671 | — | — | — | — |
| — | — O-3-4721 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 12 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Frio | 7,708 | -7,696 |
| Big Gas | 7,817 | -7,805 |
| Ken Ben | 7,894 | -7,882 |
| Coast | 7,990 | -7,978 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,809 | 7,829 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,890 | 12.25 | 740 S |
| 5.5 | 8,049 | 7.875 | 480 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 | Jun 6, 1990 | Apr 13, 1990 | — |
| 00 | May 11, 1990 | — | — |
| 00 | Dec 8, 1987 | Sep 30, 1987 | Yes |
| 00 | Dec 1, 1987 | — | — |
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 42-167-31127 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-167-31127 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 0
- bbl, all reported
- —
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000097065 | W-14 Disposal | Canceled Mar 6, 2023 | 3,000 | 2,600 | 5,225–6,035 |
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/16731127, documented in the API reference.