WELL · 42-245-31431 · DISTRICT 3
M Half Circle Ranch #2
Jefferson County · M Half Circle (10200) field · Vertical
M Half Circle Ranch #2 (API 42-245-31431) is a plugged well in Jefferson County, plugged August 18, 1997, last operated by Chevron U. S. A. Inc..
The RRC has issued 3 drilling permits (amended once) between 1980 and 1989, permitted to 11,000 ft.
Completion filings report 8 formation tops, including Miocene (undifferentiated), Heterostegina, Top Heterostegina, Marginulina.
Operator of record
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jan 30, 2026
- Permits on file
- 9,293
- Phone
- (866) 212-1212
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Chevron U. S. A. Inc. |
| Production reports | Rockbridge Oil and Gas, Inc.through Nov 1994 |
| Latest permit | Chevron U. S. A. Inc.Aug 8, 1989 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,000
- total depth, ft
- 4
- permits on file
- Aug 8, 1989
- last permit issued
- Jan 23, 1981
- completed
- 0
- cumulative oil, bbl
- 9
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Aug 2003
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 23, 1981
- Shut in
- —
- Plugged
- Aug 18, 1997
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| M Half Circle Ranch O-3-20512 | M Half Circle (8590 Frio) | Apache Exploration, Inc. (I) | 1 | 0 | 9 | Jan 1993 – Aug 2003 |
No volumes reported on these leases in the last three years.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 362469-99 | Recompletion | Chevron U. S. A. Inc. | Aug 7, 1989 | Aug 8, 1989 | — | 10,902 |
| 353477-99 | Recompletion | Chevron U. S. A. Inc. | Nov 21, 1988 | Nov 22, 1988 | — | 10,902 |
| 95181-98 | Drill | Chevron U. S. A. Inc. | Nov 19, 1986 | Oct 9, 1980 | — | 10,902 |
| 95181-99 | Drill | Gulf Oil Corp. | Oct 9, 1980 | Oct 9, 1980 | Nov 4, 1980 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-20512 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 7 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)BASE MIOCENE | 7,190 | -7,183 |
| Heterostegina | 7,640 | -7,633 |
| Top Heterostegina | 7,640 | -7,633 |
| Marginulina | 8,212 | -8,205 |
| Top Marginulina | 8,212 | -8,205 |
| Frio | 8,589 | -8,582 |
| FrioTOP FRIO | 8,589 | -8,582 |
| Moncrief (Hackberry) | 10,203 | -10,196 |
| Top Moncrief (Hackberry) Sand | 10,203 | -10,196 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,590 | 8,606 | Perforated |
| 9,752 | 9,755 | Perforated |
| 9,757 | 9,766 | Perforated |
| 10,203 | 10,207 | Perforated |
| 10,203 | 10,220 | Perforated |
| 10,215 | 10,220 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 3,049 | 15 | 1,880 S |
| 7.625 | 8,998 | 9.875 | 858 S |
| 2.375 | 10,076 | — | — |
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 | Sep 14, 1989 | Aug 15, 1989 | Yes |
| 00 | Sep 5, 1989 | — | Yes |
| 00 | Feb 9, 1989 | Nov 28, 1988 | Yes |
| 00 | Jan 31, 1989 | — | — |
| 00 | Oct 10, 1986 | Oct 2, 1986 | — |
| 00 | Jan 12, 1984 | May 22, 1981 | — |
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 42-245-31431 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-245-31431 → 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/24531431, documented in the API reference.