TEXAS · WELLS · REAGAN COUNTY · JUSTIN LEE MCMASTER-A- LEASE · API 42-383-39091 · DISTRICT 6E
Justin Lee McMaster-A- #13O
Reagan County · Spraberry (Trend Area) field · Producing · Vertical
- Fields on the latest permit · any of 4
- Frysak Farms (Devonian) · Jailhouse (Fusselman) · Roble Grande (Strawn\woodford) · Spraberry (Trend Area)
- Not one formation; the well must be completed in one of them, and no target formation is stated.
Justin Lee Mcmaster-A- #13O (API 42-383-39091) is a well in Reagan County operated by Crescent Energy Operating LLC, completed December 1, 2014 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued September 9, 2014, permitted to 10,483 ft.
It was permitted by Laredo Petroleum, Inc. and has since transferred to Crescent Energy Operating LLC on the wellbore schedule.
Completion filings report 8 formation tops, including Queen, San Andres, Clear Fork, Spraberry.
Its lease has reported 210K barrels of oil and 971K mcf of gas since May 2010, last reporting volume in April 2026. The lease carries 6 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Laredo Petroleum, Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Aug 28, 2025
- Permits on file
- 54
- Phone
- (713) 337-4600
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Crescent Energy Operating LLC |
| Production reports | Crescent Energy Operating, LLCthrough Apr 2026 |
| Latest permit | Laredo Petroleum, Inc.Sep 9, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,483
- total depth, ft
- 1
- permits on file
- Sep 9, 2014
- last permit issued
- Dec 1, 2014
- completed
- 210K
- cumulative oil, bbl
- 971K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2010 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 1, 2014
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (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 |
|---|---|---|---|---|---|---|
| Justin Lee McMaster-A- O-9-17216 | Spraberry (Trend Area) | Crescent Energy Operating, LLC | 6 | 210K | 971K | May 2010 – Apr 2026 |
Gas, mcf lease total
Last 12 months 44,224 · prior 12 40,987(+8%)
Oil, barrels lease total
Last 12 months 5,722 · prior 12 4,280(+34%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Broad Oak Energy, Inc.May 2010 → Jul 2011
- 2Laredo Petroleum - Dallas, Inc.Aug 2011 → Dec 2013
- 3Laredo Petroleum, Inc.Jan 2014 → Jan 2023
- 4Vital Energy, Inc.Feb 2023 → Dec 2025
- 5Crescent Energy Operating, LLCJan 2026 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 793299-99 | Drill | Laredo Petroleum, Inc. | Aug 4, 2014 | Sep 9, 2014 | Oct 23, 2014 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Dec 1, 2014 | Justin Lee McMaster-A- O-9-17216 | Spraberry (Trend Area) | Crescent Energy Operating LLC | Producing | 10,483 |
Formation tops
As filed on W-2/G-1. Subsea from 2,682 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen | 2,229 | 453 |
| San AndresSAN ANDRES - SALTWATER FLOW, POS | 2,836 | -154 |
| Clear ForkCLEARFORK | 4,686 | -2,004 |
| Spraberry | 5,965 | -3,283 |
| Strawn | 9,715 | -7,033 |
| Ellenburger | — | — |
| Fusselman | — | — |
| Grayburg | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,798 | 9,588 | Perforated |
| 9,740 | 10,244 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 565 | 17.5 | 490 S |
| 8.625 | 4,751 | 11 | 1,280 S |
| 5.5 | 10,483 | 7.875 | 930 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 | May 5, 2015 | Apr 17, 2015 | Yes |
| 00 | Mar 27, 2015 | Feb 23, 2015 | Yes |
Well logs
1 log loaded from the RRC's log index, 1 of it with a digital LAS file, the latest received Oct 27, 2017. Neutron. 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 |
|---|---|---|---|---|
| NeutronSpans Queen, San Andres, Clear Fork, Spraberry, Strawn | LAS + TIFF | 200 to 10,489 | Oct 27, 2017 | 0.45 + 7.71 |
"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 42-383-39091 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-383-39091 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it. The University Lands library has no per-well link: then paste it into its 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/38339091, documented in the API reference.