WELL · 42-507-33183 · DISTRICT 1
Winterbotham Zav #U 1H
Zavala County · Briscoe Ranch (Eagleford) field · Producing · Horizontal
Winterbotham Zav #U 1H (API 42-507-33183) is a horizontal well in Zavala County operated by Exco Operating Company LP, completed May 7, 2015 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued August 25, 2014, permitted to 8,000 ft.
Completion filings report 5 formation tops, including Escondido, Olmos, Anacacho, Austin Chalk.
Its lease has reported 16M barrels of oil and 9.21M mcf of gas since September 2011, last reporting in July 2026. The lease carries 57 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Dallas, TX
- P-5 status
- Active (A)
- P-5 last filed
- Aug 22, 2025
- Permits on file
- 515
- Phone
- (214) 368-2084
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Exco Operating Company LP |
| Production reports | Exco Operating Company, LPthrough Apr 2026 |
| Latest permit | Exco Operating Company, LPAug 25, 2014 |
- 8,000
- total depth, ft
- 1
- permits on file
- Aug 25, 2014
- last permit issued
- May 7, 2015
- completed
- 16M
- cumulative oil, bbl
- 9.21M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2011 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 7, 2015
- 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 57 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Winterbotham Zav O-1-15744 | Briscoe Ranch (Eagleford) | Exco Operating Company, LP | 57 | 16M | 9.21M | Sep 2011 – Jul 2026 |
Oil, barrels lease total
Last 12 months 679,502 · prior 12 761,396(-11%)
Gas, mcf lease total
Last 12 months 517,152 · prior 12 527,747(-2%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Chesapeake Operating, Inc.Apr 2012 → Jun 2013
- 2Exco Operating Company, LPJul 2013 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 792845-99 | Drill | Exco Operating Company, LP | Jul 29, 2014 | Aug 25, 2014 | Mar 1, 2015 | 8,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-15744 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 725 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| EscondidoESCONDIDO - DISPOSAL | 3,365 | -2,640 |
| Olmos | 4,461 | -3,736 |
| Anacacho | 5,481 | -4,756 |
| Austin Chalk | 5,933 | -5,208 |
| Eagle Ford | 6,327 | -5,602 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,010 | 14,883 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 3,118 | 12.25 | 920 S |
| 5.5 | 14,975 | 8.75 | 2,170 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 | Nov 20, 2015 | Jul 27, 2015 | Yes |
| 00 | Aug 28, 2015 | Apr 21, 2015 | 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 42-507-33183 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-507-33183 → 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/50733183, documented in the API reference.