WELL · 42-227-38594 · DISTRICT 8
Masters Unit #A 1H
Howard County · Spraberry (Trend Area) field · Producing · Horizontal
Masters Unit #A 1H (API 42-227-38594) is a horizontal well in Howard County operated by Apache Corporation, completed November 7, 2015 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued July 31, 2015, permitted to 10,000 ft.
It was permitted by Big Star Oil & Gas, LLC and has since transferred to Apache Corporation on the wellbore schedule.
Completion filings report 10 formation tops, including Yates, Seven Rivers, Glorieta, San Andres.
Its lease has reported 2.23M barrels of oil and 5.41M mcf of gas since November 2015, last reporting in July 2026. The lease carries 8 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Big Star Oil & Gas, LLC; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Oct 4, 2025 · 9,754 permits on file · (713) 296-6400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Apache Corporation |
| Production reports | Apache Corporationthrough Apr 2026 |
| Latest permit | Big Star Oil & Gas, LLCJul 31, 2015 |
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
- 1
- permits on file
- Jul 31, 2015
- last permit issued
- Nov 7, 2015
- completed
- 2.23M
- cumulative oil, bbl
- 5.41M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 2015 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 7, 2015
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 8 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Masters Unit O-10-47823 | Spraberry (Trend Area) | Apache Corporation | 8 | 2.23M | 5.41M | Nov 2015 – Jul 2026 |
Gas, mcf lease total
Last 12 months 262,242 · prior 12 712,852(-63%)
Oil, barrels lease total
Last 12 months 50,842 · prior 12 105,418(-52%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Big Star Oil & Gas, LLCNov 2015 → May 2016
- 2Callon Petroleum Operating CoJun 2016 → Jul 2024
- 3Apache CorporationAug 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 808843-99 | Drill | Big Star Oil & Gas, LLC | Jul 27, 2015 | Jul 31, 2015 | Aug 24, 2015 | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-47823 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,561 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 1,303 | 1,258 |
| Seven Rivers | 1,405 | 1,156 |
| Glorieta | 3,285 | -724 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 3,375 | -814 |
| Clear ForkCLEARFORK - SEVERE WATER FLOWS | 5,604 | -3,043 |
| Coleman Junction | 5,941 | -3,380 |
| Spraberry | 5,962 | -3,401 |
| Leonard | 6,963 | -4,402 |
| Dean | 7,220 | -4,659 |
| Wolfcamp | 7,300 | -4,739 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,288 | 16,840 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 374 | 17.5 | 425 S |
| 9.625 | 7,296 | 12.25 | 1,100 S |
| 5.5 | 16,941 | 8.5 | 2,960 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 10, 2016 | Jun 28, 2016 | Yes |
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 42-227-38594 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-227-38594 → 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/22738594, documented in the API reference.