WELL · 42-311-35248 · DISTRICT 1
Zavisch -A- #12
McMullen County · A.W.P. (Olmos) field · Producing · Vertical
Zavisch -A- #12 (API 42-311-35248) is a well in Mcmullen County operated by Gtg Operating LLC, completed March 14, 2013 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued January 11, 2013, permitted to 10,800 ft.
It was permitted by Layline Petroleum I, LLC and has since transferred to Gtg Operating LLC on the wellbore schedule.
Completion filings report one formation top, including Awp Olmos.
Its lease has reported 251K barrels of oil and 972K mcf of gas since January 2004, last reporting in July 2026. The lease carries 9 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Layline Petroleum I, LLC; the EWA schedule now lists a different operator.
Tyler, TX · P-5 Y, filed Oct 4, 2025 · 1 permits on file · (806) 445-4118
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | GTG Operating LLC |
| Production reports | GTG Operating, LLCthrough Feb 2026 |
| Latest permit | Layline Petroleum I, LLCJan 11, 2013 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,800
- total depth, ft
- 1
- permits on file
- Jan 11, 2013
- last permit issued
- Mar 14, 2013
- completed
- 251K
- cumulative oil, bbl
- 972K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2004 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 14, 2013
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 9 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Zavisch -A- O-1-14506 | A.W.P. (Olmos) | GTG Operating, LLC | 9 | 251K | 972K | Jan 2004 – Jul 2026 |
Oil, barrels lease total
Last 12 months 1,324 · prior 12 2,291(-42%)
Gas, mcf lease total
Last 12 months 950 · prior 12 3,323(-71%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Welhausen Operating Company, LPJan 2004 → Dec 2011
- 2Layline Petroleum I, LLCJan 2012 → May 2013
- 3Wapiti Operating, LLCJun 2013 → Mar 2015
- 4Clearly Petroleum, LLCApr 2015 → Apr 2020
- 5GTG Operating, LLCMay 2020 → Feb 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 754079-99 | Drill | Layline Petroleum I, LLC | Jan 4, 2013 | Jan 11, 2013 | Feb 4, 2013 | 10,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-14506 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 292 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Awp Olmos | 10,262 | -9,970 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,262 | 10,280 | Perforated |
| 10,296 | 10,302 | Perforated |
| 10,310 | 10,320 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,555 | 12.25 | 500 S |
| 4.5 | 10,500 | 8.75 | 3,046 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 | Dec 19, 2013 | Apr 19, 2013 | 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 42-311-35248 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-311-35248 → 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/31135248, documented in the API reference.