WELL · 42-059-01941 · DISTRICT 7
Dugan Unit #4S
Callahan County · Dykes (Cook Sand) field · Vertical
Dugan Unit #4S (API 42-059-01941) is a plugged well in Callahan County, plugged November 16, 2021, last operated by Atwell Technical Services Inc..
The RRC has issued one drilling permit, issued June 17, 1985, permitted to 1,565 ft.
It was permitted by Megargel Drlg. CO. and has since transferred to Atwell Technical Services Inc. on the wellbore schedule.
Completion filings report one formation top, including Dykes/Cook/Sand.
Its lease has reported 25.4K barrels of oil and 24 mcf of gas since January 1993, last reporting in July 2026. The lease carries 12 wells, so these are lease totals, not this well alone.
Operator of record
Atwell Technical Services Inc.
Permitted by Megargel Drlg. Co.; the EWA schedule now lists a different operator.
Breckenridge, TX · P-5 Y, filed Dec 4, 2025 · 2 permits on file · (214) 914-7949
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Atwell Technical Services Inc. |
| Production reports | Atwell Technical Services, Inc.through May 2017 |
| Latest permit | Megargel Drlg. Co.Jun 17, 1985 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 1,565
- total depth, ft
- 1
- permits on file
- Jun 17, 1985
- last permit issued
- Mar 10, 1985
- completed
- 25.4K
- cumulative oil, bbl
- 24
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Mar 10, 1985
- Shut in
- —
- Plugged
- Nov 16, 2021
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 12 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Dugan Unit O-8-10968 | Dykes (Cook Sand) | Atwell Technical Services, Inc. | 12 | 25.4K | 24 | Jan 1993 – Jul 2026 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Carrland Oil & Gas Inc.Jan 1993 → Jul 1993
- 2Bayridge Texas Corp.Aug 1993 → Apr 1995
- 3Ohlhausen Oil CompanyMay 1995 → Apr 2009
- 4Tollett OilOct 2001 → Sep 2002
- 5Tri-Tex Exploration LtdOct 2002 → Mar 2004
- 6Payne PetroleumApr 2004 → Mar 2005
- 7Atwell Technical Services, Inc.May 2009 → May 2017
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 277869-99 | Drill | Megargel Drlg. Co. | May 28, 1985 | Jun 17, 1985 | — | 1,565 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-8-10968 | — | — | — | — |
| — | — O-8-10968 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,491 | 1,506 | Perforated |
| 1,548 | 1,560 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 73 | 13.75 | 60 S |
| 10.75 | 105 | — | 100 S |
| 5.5 | 1,548 | — | 150 S |
| 5.5 | 1,556 | 8.75 | 75 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 | Jun 10, 1985 | May 13, 1985 | — |
| 00 | Jan 12, 1984 | Oct 18, 1977 | — |
| 00 | Jan 12, 1984 | — | — |
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 42-059-01941 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-059-01941 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 744K
- bbl, all reported
- Jan 2018
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000007170 | H-1 Injection | Plugged Nov 30, 2021 | 100 | 400 | 1,548–1,580 |
| 000007171 | H-1 Injection | Plugged Nov 30, 2021 | 0 | 0 | 0–0 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 0
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/05901941, documented in the API reference.