WELL · 42-355-33975 · DISTRICT 4
Chapman #12
Nueces County · Chapman Ranch (Upper Frio Cons.) field · Producing · Vertical
Chapman #12 (API 42-355-33975) is a well in Nueces County operated by Sun Exploration Inc., completed May 20, 2010 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued December 28, 2009, permitted to 7,100 ft.
It was permitted by Carter Exploration Company and has since transferred to Sun Exploration Inc. on the wellbore schedule.
Completion filings report 3 formation tops, including L 23, Top Het, Greta.
Its lease has reported 177K barrels of oil and 22.3K mcf of gas since November 2006, last reporting in July 2026. The lease carries 6 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Carter Exploration Company; the EWA schedule now lists a different operator.
Alice, TX · P-5 Y, filed Aug 4, 2025 · 1 permits on file · (361) 227-7710
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sun Exploration Inc. |
| Production reports | Sun Exploration, Inc.through Jan 2026 |
| Latest permit | Carter Exploration CompanyDec 28, 2009 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,100
- total depth, ft
- 1
- permits on file
- Dec 28, 2009
- last permit issued
- May 20, 2010
- completed
- 177K
- cumulative oil, bbl
- 22.3K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 2006 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 20, 2010
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
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 6 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Chapman O-4-13410 | Chapman Ranch (Upper Frio Cons.) | Sun Exploration, Inc. | 6 | 177K | 22.3K | Nov 2006 – Jul 2026 |
Oil, barrels lease total
Last 12 months 10 · prior 12 83(-88%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Carter Exploration CompanyNov 2006 → May 2014
- 2Magnum Producing, LPJun 2014 → May 2019
- 3Sun Exploration, Inc.Jan 2020 → Jan 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 688003-99 | Drill | Carter Exploration Company | Nov 30, 2009 | Dec 28, 2009 | Apr 23, 2010 | 7,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-4-13410 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 37 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| L 23 | 3,140 | -3,103 |
| Top Het | 5,655 | -5,618 |
| GretaLOWER GRETA | 6,305 | -6,268 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,673 | 6,678 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,114 | 12.25 | 445 S |
| 4.5 | 6,880 | 7.875 | 401 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 9, 2010 | Jun 7, 2010 | Yes |
| 00 | Jun 17, 2010 | — | — |
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 42-355-33975 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-355-33975 → 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/35533975, documented in the API reference.