WELL · 42-329-35665 · DISTRICT 8
CASSELMAN4 #403
Midland County · Spraberry (Trend Area) field · Shut IN · Vertical
Casselman4 #403 (API 42-329-35665) is a well in Midland County operated by Apache Corporation, completed February 12, 2008 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit, issued January 24, 2007, permitted to 11,500 ft.
It was permitted by Lothian Oil Texas I, Inc. and has since transferred to Apache Corporation on the wellbore schedule.
Completion filings report 4 formation tops, including T. Clearfork, T. Spraberry, T. Dean, T. Wolfcamp.
Its lease has reported 2.65M barrels of oil and 6.48M mcf of gas since February 2008, last reporting in July 2026. The lease carries 34 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Lothian Oil Texas I, Inc.; 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 | Lothian Oil Texas I, Inc.Jan 24, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,500
- total depth, ft
- 1
- permits on file
- Jan 24, 2007
- last permit issued
- Feb 12, 2008
- completed
- 2.65M
- cumulative oil, bbl
- 6.48M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2008 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 12, 2008
- 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 34 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| CASSELMAN4 O-10-38675 | Spraberry (Trend Area) | Apache Corporation | 34 | 2.65M | 6.48M | Feb 2008 – Jul 2026 |
Oil, barrels lease total
Last 12 months 492,963 · prior 12 115,176(+328%)
Gas, mcf lease total
Last 12 months 789,975 · prior 12 562,364(+40%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Henry Petroleum LPFeb 2008 → Jul 2008
- 2Henry Resources LLCAug 2008 → Oct 2014
- 3Callon Petroleum Operating CoNov 2014 → Jul 2024
- 4Apache CorporationAug 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 632105-99 | Drill | Lothian Oil Texas I, Inc. | Jan 18, 2007 | Jan 24, 2007 | Dec 23, 2007 | 11,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-38675 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,882 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| T. Clearfork | 7,060 | -4,178 |
| T. Spraberry | 8,250 | -5,368 |
| T. Dean | 9,452 | -6,570 |
| T. Wolfcamp | 9,720 | -6,838 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,304 | 10,660 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 349 | 17.5 | 400 S |
| 8.625 | 5,330 | 11 | 2,830 S |
| 5.5 | 10,833 | 7.875 | 1,805 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 | Sep 16, 2008 | Mar 3, 2008 | Yes |
| 00 | Jul 28, 2008 | — | — |
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 42-329-35665 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-329-35665 → 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/32935665, documented in the API reference.