TEXAS · WELLS · MIDLAND COUNTY · CASSELMAN40 LEASE · API 42-329-39560 · DISTRICT 7B
CASSELMAN40 #4LS
Midland County · Spraberry (Trend Area) field · Producing · Horizontal
Casselman40 #4LS (API 42-329-39560) is a horizontal well in Midland County operated by Apache Corporation, completed November 21, 2014 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued August 13, 2014, permitted to 9,168 ft.
It was permitted by Henry Resources LLC 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 volume in April 2026. The lease carries 31 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Henry Resources LLC; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Dec 3, 2025
- Permits on file
- 9,758
- Phone
- (713) 954-5500
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Apache Corporation |
| Production reports | Apache Corporationthrough Apr 2026 |
| Latest permit | Henry Resources LLCAug 13, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,168
- total depth, ft
- 1
- permits on file
- Aug 13, 2014
- last permit issued
- Nov 21, 2014
- completed
- 3.1M
- cumulative oil, bbl
- 10.4M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jul 2008 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 21, 2014
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 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 – Apr 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 |
|---|---|---|---|---|---|---|
| 790471-99 | Drill | Henry Resources LLC | Jun 26, 2014 | Aug 13, 2014 | Sep 25, 2014 | 9,350 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Nov 21, 2014 | CASSELMAN40 O-10-38873 | Spraberry (Trend Area) | Apache Corporation | Producing | 9,168 |
Formation tops
As filed on W-2/G-1. Subsea from 2,881 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 1,125 | 1,756 |
| Yates | 3,025 | -144 |
| Seven Rivers | 3,340 | -459 |
| Queen | 4,100 | -1,219 |
| Grayburg | 4,675 | -1,794 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 4,900 | -2,019 |
| Glorieta | 5,750 | -2,869 |
| Clear ForkCLEARFORK | 7,115 | -4,234 |
| Spraberry | 8,145 | -5,264 |
| SpraberrySPRABERRY UPPER-DEAN | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,549 | 13,945 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,710 | 17.5 | 1,405 S |
| 9.625 | 8,574 | 12.25 | 1,190 S |
| 5.5 | 14,022 | 8.5 | 1,510 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jul 23, 2015 | Apr 20, 2015 | — |
Well logs
1 log loaded from the RRC's log index, the latest received Feb 8, 2016. Resistivity. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| RESISTIVITYSpans Spraberry | TIFF | 8,536 to 12,719 | Feb 8, 2016run Oct 16, 2014 | 3.75 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-329-39560 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-329-39560 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/32939560, documented in the API reference.