TEXAS · WELLS · LAVACA COUNTY · ULCAK-EDWARDS GAS UNIT LEASE · API 42-285-31523 · DISTRICT 02
Ulcak-Edwards Gas Unit #1
Lavaca County · Word N. (Edwards) field · Producing · Vertical
Ulcak-Edwards Gas Unit #1 (API 42-285-31523) is a well in Lavaca County operated by Capital Star Oil & Gas Inc., completed August 30, 1981 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued October 16, 1980, permitted to 14,112 ft.
It was permitted by Howell Drilling, Inc. and has since transferred to Capital Star Oil & Gas Inc. on the wellbore schedule.
Its lease has reported 3.46K barrels of oil and 1.82M mcf of gas since January 1993, last reporting volume in April 2026.
Operator of record
Permitted by Howell Drilling, Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Mar 19, 2026
- Permits on file
- 49
- Phone
- (713) 554-4620
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Capital Star Oil & Gas Inc. |
| Production reports | Capital Star Oil & Gas, Inc.through Apr 2026 |
| Latest permit | Howell Drilling, Inc.Oct 16, 1980 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 14,112
- total depth, ft
- 1
- permits on file
- Oct 16, 1980
- last permit issued
- Aug 30, 1981
- completed
- 3.46K
- cumulative oil, bbl
- 1.82M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Aug 30, 1981
- 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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Ulcak-Edwards Gas Unit G-2-95081 | Word, N. (Edwards) | Capital Star Oil & Gas, Inc. | 1 | 3.46K | 1.82M | Jan 1993 – Apr 2026 |
Gas, mcf lease total
Last 12 months 38,257 · prior 12 34,655(+10%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Howell Drilling, Inc.Jan 1993 → Dec 1993
- 2Parker & Parsley Development Co.Jan 1994 → Feb 1995
- 3Parker & Parsley Development L.PMar 1995 → Aug 1997
- 4Pioneer Natural Res. USA, Inc.Sep 1997 → Apr 2018
- 5Prize Operating CompanyJul 1999 → Mar 2002
- 6Gruy Petroleum Management Co.Apr 2002 → Apr 2006
- 7Cimarex Energy Co. of ColoradoMay 2006 → Nov 2008
- 8Sulphur River Exploration, Inc.May 2018 → May 2023
- 9Capital Star Oil & Gas, Inc.Jun 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 95841-99 | Drill | Howell Drilling, Inc. | Oct 16, 1980 | Oct 16, 1980 | — | 14,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Aug 30, 1981 | Ulcak-Edwards Gas Unit G-2-95081 | Word N. (Edwards) | Capital Star Oil & Gas Inc. | Producing | 14,112 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 13,515 | 13,471 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,965 | 17.5 | 1,390 S |
| 9.625 | 9,409 | 12.25 | 680 S |
| 2.875 | 13,420 | — | — |
| 5 | 14,103 | 8.5 | 1,600 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 | Jan 12, 1984 | Sep 10, 1981 | — |
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 42-285-31523 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-285-31523 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here 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/28531523, documented in the API reference.