WELL · 42-133-38274 · DISTRICT 7
Duffer #4
Eastland County · Adams (Duffer Lower) field · Producing · Vertical
Duffer #4 (API 42-133-38274) is a well in Eastland County operated by Byrne Oil Company, completed December 2, 2019 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued May 15, 2019, permitted to 4,000 ft.
Completion filings report 9 formation tops, including Strawn, Blake - Disposal, Canyon, Cisco.
Its lease has reported 5.88K barrels of oil and 48.4K mcf of gas since January 1993, last reporting in July 2026. The lease carries 4 wells, so these are lease totals, not this well alone.
Operator of record
Lubbock, TX · P-5 Y, filed Sep 4, 2025 · 42 permits on file · (254) 488-1053
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Byrne Oil Company |
| Production reports | Byrne Oil Companythrough Apr 2026 |
| Latest permit | Byrne Oil CompanyMay 15, 2019 |
- 4,000
- total depth, ft
- 1
- permits on file
- May 15, 2019
- last permit issued
- Dec 2, 2019
- completed
- 5.88K
- cumulative oil, bbl
- 48.4K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 2, 2019
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
32.408788, -98.650825
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Eastland County.
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 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Duffer O-8-18663 | Adams (Duffer, Lower) | Byrne Oil Company | 4 | 5.88K | 48.4K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 558 · prior 12 179(+212%)
Gas, mcf lease total
Last 12 months 1,269 · prior 12 822(+54%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Byrne, Robert E.Jan 1993 → Jan 2005
- 2Byrne Oil CompanyFeb 2005 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 852999-99 | Drill | Byrne Oil Company | May 10, 2019 | May 15, 2019 | Jun 17, 2019 | 4,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-8-18663 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,487 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,424 | 3,480 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 167 | 12.25 | 115 S |
| 4.5 | 3,577 | 7.875 | 150 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 | Feb 24, 2020 | Jan 3, 2020 | 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 42-133-38274 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-133-38274 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Duffer B42-133-37770
0.9 KM · Byrne, Robert E. · Section with this well →
| Duffer | 3,427 | -1,946 |
| Caddo | — | |
| Strawn | — | |
| Mississippian | — | |
| Hickory Sand - Disposal | — | |
| Frye - Disposal | — | |
| Ely Sand - Disposal | — | |
| Ellenburger | — |
10 TOPS · FIRST 8
Lucky Seven42-133-36711
2.2 KM · Richey & Company, Inc. · Section with this well →
| Strawn | 1,270 | 199 |
| Strawn | 1,270 | 199 |
| Caddo | 2,854 | -1,385 |
| Conglomerate | 3,039 | -1,570 |
| Mississippian | 3,176 | -1,707 |
| Ellenburger | 3,606 | -2,137 |
Penn, E.F.42-133-32964
5.8 KM · TJR Petroleums, Inc. · Section with this well →
| Marble Falls | 3,216 | -1,720 |
| Ranger | 3,350 | -1,854 |
| Unidentified-County Regular - DI | — | |
| Cisco | — | |
| Crosscut - Disposal | — | |
| Ely Sand - Disposal | — | |
| Blake - Disposal | — | |
| Frye - Disposal | — |
10 TOPS · FIRST 8
Ellie42-133-38271
6.1 KM · Bear Springs Oil & Gas, L.L.C · Section with this well →
| Unidentified-County Regular - DI | 3,815 | -2,359 |
| Canyon | — | |
| Cisco | — | |
| Strawn | — | |
| Strawn | — | |
| Overall Sand - Disposal | — | |
| Frye - Disposal | — | |
| Ely Sand - Disposal | — |
10 TOPS · FIRST 8
Ellie42-133-38263
6.1 KM · Bear Springs Oil & Gas, L.L.C · Section with this well →
| Crosscut - Disposal | — | |
| Blake - Disposal | — | |
| Canyon | — | |
| Cisco | — | |
| Ely Sand - Disposal | — | |
| Frye - Disposal | — | |
| Overall Sand - Disposal | — | |
| Strawn | — |
10 TOPS · FIRST 8
Hailey D42-133-38284
12.2 KM · Bear Springs Oil & Gas, L.L.C · Section with this well →
| Strawn | 1,010 | 416 |
| Unidentified-County Regular - DI | 3,150 | -1,724 |
| Crosscut - Disposal | — | |
| Ely Sand - Disposal | — | |
| Frye - Disposal | — | |
| Overall Sand - Disposal | — | |
| Strawn | — | |
| Blake - Disposal | — |
10 TOPS · FIRST 8
Hailey D42-133-38278
12.4 KM · Bear Springs Oil & Gas, L.L.C · Section with this well →
| Unidentified-County Regular - DI | 3,150 | -1,731 |
| Blake - Disposal | — | |
| Canyon | — | |
| Cisco | — | |
| Crosscut - Disposal | — | |
| Ely Sand - Disposal | — | |
| Frye - Disposal | — | |
| Overall Sand - Disposal | — |
10 TOPS · FIRST 8
Hailey D42-133-38293
12.4 KM · Bear Springs Oil & Gas, L.L.C · Section with this well →
| Ely Sand - Disposal | 730 | 693 |
| Strawn | 1,019 | 404 |
| Ellenburger | 3,258 | -1,835 |
| Unidentified-County Regular - DI | 3,300 | -1,877 |
| Crosscut - Disposal | — | |
| Cisco | — | |
| Frye - Disposal | — | |
| Overall Sand - Disposal | — |
10 TOPS · FIRST 8
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/13338274, documented in the API reference.