TEXAS · WELLS · ROBERTSON COUNTY · VIOLA SIMS UNIT LEASE · API 42-395-31815 · DISTRICT 05
Viola Sims Unit #1
Robertson County · Bald Prairie (CV Consolidated) field · Producing · Directional
Viola Sims Unit #1 (API 42-395-31815) is a well in Robertson County operated by Comstock Oil & Gas LLC, completed November 19, 2011 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended twice), issued June 16, 2011, permitted to 16,562 ft.
It was permitted by Encana Oil & Gas(USA) Inc. and has since transferred to Comstock Oil & Gas LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Austin Chalk, Bexar Shale, Travis Peak.
Its lease has reported 182 barrels of oil and 2.49M mcf of gas since July 2011, last reporting volume in April 2026.
Operator of record
Permitted by Encana Oil & Gas(usa) Inc.; the EWA schedule now lists a different operator.
- Based in
- Frisco, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jul 28, 2025
- Permits on file
- 239
- Phone
- (972) 668-8800
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Comstock Oil & Gas LLC |
| Production reports | Comstock Oil & Gas, LLCthrough Apr 2026 |
| Latest permit | Encana Oil & Gas(usa) Inc.Jun 16, 2011 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 16,562
- total depth, ft
- 3
- permits on file
- Jun 16, 2011
- last permit issued
- Nov 19, 2011
- completed
- 182
- cumulative oil, bbl
- 2.49M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 2011 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 19, 2011
- 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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Viola Sims Unit G-5-265633 | Bald Prairie (CV Consolidated) | Comstock Oil & Gas, LLC | 1 | 182 | 2.49M | Jul 2011 – Apr 2026 |
Gas, mcf lease total
Last 12 months 17,676 · prior 12 46,665(-62%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Encana Oil & Gas(usa) Inc.Nov 2011 → Aug 2014
- 2Covey Park Operating LLCSep 2014 → Aug 2019
- 3Comstock Oil & Gas, LLCSep 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 718366-97 | Drill | Encana Oil & Gas(usa) Inc. | May 14, 2012 | Jun 16, 2011 | Jul 13, 2011 | 22,000 |
| 718366-98 | Drill | Encana Oil & Gas(usa) Inc. | Jul 5, 2011 | Jun 16, 2011 | Jul 13, 2011 | 22,000 |
| 718366-99 | Drill | Encana Oil & Gas(usa) Inc. | Jun 14, 2011 | Jun 16, 2011 | — | 22,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Nov 19, 2011 | Viola Sims Unit G-5-265633 | Bald Prairie (CV Consolidated) | Comstock Oil & Gas LLC | Producing | 16,562 |
Formation tops
As filed on W-2/G-1. Subsea from 337 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 5,494 | -5,157 |
| Bexar Shale | 9,077 | -8,740 |
| Travis Peak | 9,692 | -9,355 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 14,946 | 15,264 | Perforated |
| 15,483 | 15,966 | Perforated |
| 16,145 | 16,634 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 2,450 | 17.5 | 2,780 S |
| 9.625 | 9,780 | 12.25 | 1,580 S |
| 4.5 | 16,823 | 5.5 | 685 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 | Dec 27, 2012 | Dec 21, 2011 | Yes |
Well logs
2 logs loaded from the RRC's log index, the latest received Dec 1, 2017. 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 Austin Chalk, Bexar Shale, Travis Peak | TIFF | 5,500 to 14,809 | Dec 1, 2017run Sep 10, 2011 | 6.51 |
| RESISTIVITYSpans Austin Chalk, Bexar Shale, Travis Peak | TIFF | 5,500 to 16,821 | Oct 20, 2017run Sep 10, 2011 | 2.32 |
"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 42-395-31815 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-395-31815 → 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/39531815, documented in the API reference.