WELL · 42-329-41858 · DISTRICT 8
CASSELMAN40 #21AH
Midland County · Spraberry (Trend Area) field · Shut IN · Horizontal
Casselman40 #21AH (API 42-329-41858) is a horizontal well in Midland County operated by Apache Corporation, completed April 14, 2018 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued July 27, 2017, permitted to 9,850 ft.
It was permitted by Callon Petroleum Operating CO and has since transferred to Apache Corporation on the wellbore schedule.
Completion filings report 9 formation tops, including Santa Rosa, Yates, Seven Rivers, Queen.
Its lease has reported 3.1M barrels of oil and 10.4M mcf of gas since July 2008, last reporting in July 2026. The lease carries 31 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Callon Petroleum Operating Co; 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 | Callon Petroleum Operating CoJul 27, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,850
- total depth, ft
- 2
- permits on file
- Jul 27, 2017
- last permit issued
- Apr 14, 2018
- completed
- 3.1M
- cumulative oil, bbl
- 10.4M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jul 2008 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 14, 2018
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
32.071920, -102.229757
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Midland County.
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 31 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| CASSELMAN40 O-10-38873 | Spraberry (Trend Area) | Apache Corporation | 31 | 3.1M | 10.4M | Jul 2008 – Jul 2026 |
Gas, mcf lease total
Last 12 months 524,751 · prior 12 632,516(-17%)
Oil, barrels lease total
Last 12 months 60,567 · prior 12 62,040(-2%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Henry Resources LLCJul 2008 → Oct 2014
- 2Callon Petroleum Operating CoNov 2014 → Jul 2024
- 3Apache CorporationAug 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 829173-98 | Drill | Callon Petroleum Operating Co | Nov 15, 2017 | Jul 27, 2017 | — | 9,850 |
| 829173-99 | Drill | Callon Petroleum Operating Co | Jul 25, 2017 | Jul 27, 2017 | Jan 5, 2018 | 9,850 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-38873 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Download CSV →
| Formation | MD ft |
|---|---|
| Santa Rosa | 1,140 |
| Yates | 3,048 |
| Seven Rivers | 3,225 |
| Queen | 4,123 |
| Grayburg | 4,602 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 5,064 |
| Glorieta | 5,938 |
| Clear ForkCLEARFORK | 7,171 |
| Spraberry | 8,167 |
| SpraberrySPRABERRY UPPER-DEAN | 9,391 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,009 | 14,196 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,628 | 17.5 | 1,040 S |
| 9.625 | 9,045 | 12.25 | 725 S |
| 5.5 | 14,264 | 8.5 | 1,925 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 | Oct 18, 2018 | Aug 8, 2018 | 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 42-329-41858 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-329-41858 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
CASSELMAN4042-329-42094
0.0 KM · Callon Petroleum Operating Co · Section with this well →
| Santa Rosa | 1,135 | |
| Yates | 3,051 | |
| Seven Rivers | 3,228 | |
| Queen | 4,125 | |
| Grayburg | 4,602 | |
| San Andres | 5,060 | |
| Glorieta | 5,942 | |
| Clear Fork | 7,172 |
10 TOPS · FIRST 8
CASSELMAN442-329-45594
0.6 KM · Callon Petroleum Operating Co · Section with this well →
| Santa Rosa | 1,115 | |
| Rustler | 1,895 | |
| Yates | 3,035 | |
| Seven Rivers | 3,340 | |
| Queen | 4,125 | |
| Grayburg | 4,608 | |
| San Andres | 5,040 | |
| Glorieta | 5,940 |
10 TOPS · FIRST 8
CASSELMAN442-329-45595
0.6 KM · Callon Petroleum Operating Co · Section with this well →
| Santa Rosa | 1,115 | |
| Rustler | 1,895 | |
| Yates | 3,035 | |
| Seven Rivers | 3,340 | |
| Queen | 4,125 | |
| Grayburg | 4,608 | |
| San Andres | 5,040 | |
| Glorieta | 5,940 |
10 TOPS · FIRST 8
CASSELMAN442-329-45596
0.6 KM · Callon Petroleum Operating Co · Section with this well →
| Santa Rosa | 1,115 | |
| Rustler | 1,895 | |
| Yates | 3,035 | |
| Seven Rivers | 3,340 | |
| Queen | 4,125 | |
| Grayburg | 4,608 | |
| San Andres | 5,040 | |
| Glorieta | 5,940 |
10 TOPS · FIRST 8
CASSELMAN442-329-45593
0.6 KM · Callon Petroleum Operating Co · Section with this well →
| Santa Rosa | 1,115 | |
| Rustler | 1,895 | |
| Yates | 3,035 | |
| Seven Rivers | 3,340 | |
| Queen | 4,125 | |
| Grayburg | 4,608 | |
| San Andres | 5,040 | |
| Glorieta | 5,940 |
10 TOPS · FIRST 8
CASSELMAN442-329-47422
0.9 KM · Apache Corporation · Section with this well →
| Santa Rosa | 1,135 | 1,753 |
| Rustler | 1,925 | 963 |
| Yates | 3,058 | -170 |
| Seven Rivers | 3,216 | -328 |
| Queen | 4,272 | -1,384 |
| Grayburg | 4,338 | -1,450 |
| San Andres | 4,858 | -1,970 |
| Glorieta | 5,910 | -3,022 |
10 TOPS · FIRST 8
CASSELMAN442-329-47420
0.9 KM · Apache Corporation · Section with this well →
| Santa Rosa | 1,140 | 1,748 |
| Rustler | 1,931 | 957 |
| Yates | 3,060 | -172 |
| Seven Rivers | 3,216 | -328 |
| Queen | 4,292 | -1,404 |
| Grayburg | 4,342 | -1,454 |
| San Andres | 4,856 | -1,968 |
| Glorieta | 5,903 | -3,015 |
10 TOPS · FIRST 8
CASSELMAN442-329-47418
0.9 KM · Apache Corporation · Section with this well →
| Santa Rosa | 1,098 | 1,790 |
| Rustler | 1,929 | 959 |
| Yates | 3,054 | -166 |
| Seven Rivers | 3,216 | -328 |
| Queen | 4,281 | -1,393 |
| Grayburg | 4,335 | -1,447 |
| San Andres | 4,856 | -1,968 |
| Glorieta | 5,912 | -3,024 |
10 TOPS · FIRST 8
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/32941858, documented in the API reference.