TEXAS · WELLS · MIDLAND COUNTY · CASSELMAN10 LEASE · API 42-329-40999 · DISTRICT 7B
CASSELMAN10 #15LL
Midland County · Spraberry (Trend Area) field · Producing · Horizontal
Casselman10 #15LL (API 42-329-40999) is a horizontal well in Midland County operated by Apache Corporation, completed December 6, 2016 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued June 7, 2016, permitted to 9,225 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 2.58M barrels of oil and 7.95M mcf of gas since July 2008, last reporting volume in August 2026. The lease carries 26 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.
- 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 | Callon Petroleum Operating CoJun 7, 2016 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,225
- total depth, ft
- 1
- permits on file
- Jun 7, 2016
- last permit issued
- Dec 6, 2016
- completed
- 2.58M
- cumulative oil, bbl
- 7.95M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · JUL 2008 THROUGH AUG 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 6, 2016
- 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.
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
Texas locations come from drilling permits, so most older Texas wells have none and are not listed.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH AUG 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 26 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| CASSELMAN10 O-10-38905 | Spraberry (Trend Area) | Apache Corporation | 26 | 2.58M | 7.95M | Jul 2008 – Aug 2026 |
Gas, mcf lease total
Last 12 months 383,734 · prior 12 516,889(-26%)
Oil, barrels lease total
Last 12 months 45,542 · prior 12 62,643(-27%)
Wells named CASSELMAN10
Apache Corporation's other wells filed under this lease name in Midland County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain 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 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 816065-99 | Drill | Callon Petroleum Operating Co | Jun 3, 2016 | Jun 7, 2016 | Sep 14, 2016 | 9,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Dec 6, 2016 | CASSELMAN10 O-10-38905 | Spraberry (Trend Area) | Apache Corporation | Producing | 9,225 |
Formation tops
As filed on W-2/G-1. Download CSV →
| Formation | MD ft |
|---|---|
| Santa Rosa | 1,125 |
| Yates | 2,975 |
| Seven Rivers | 3,225 |
| Queen | 4,070 |
| Grayburg | 4,655 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 4,980 |
| Glorieta | 5,840 |
| Clear ForkCLEARFORK | 7,120 |
| Spraberry | 8,130 |
| SpraberrySPRABERRY UPPER-DEAN | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,415 | 13,815 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,360 | 17.5 | 960 S |
| 9.625 | 8,500 | 12.25 | 1,125 S |
| 5.5 | 14,040 | 8.5 | 1,810 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 6, 2017 | May 4, 2017 | Yes |
Well logs
1 log loaded from the RRC's log index, 1 of it with a digital LAS file, the latest received Oct 15, 2019. Gamma ray. 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 |
|---|---|---|---|---|
| Gamma RaySpans Spraberry | LAS + TIFF | 8,510 to 14,040 | Oct 15, 2019 | 0.36 + 3.64 |
"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 42-329-40999 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-329-40999 → 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/32940999, documented in the API reference.