WELL · 42-187-33280 · DISTRICT 1
Hartfield #4B
Guadalupe County · LA Vernia field · Vertical
Hartfield #4B (API 42-187-33280) is a plugged well in Guadalupe County, plugged December 22, 2016, last operated by Great Plains Resources Inc..
The RRC has issued one drilling permit, issued November 8, 1988, permitted to 900 ft.
It was permitted by Adco Energy, Inc. and has since transferred to Great Plains Resources Inc. on the wellbore schedule.
Completion filings report 3 formation tops, including Poth, Wilcox, Navarro.
Its lease has reported 215 barrels of oil and 4 mcf of gas since January 1993, last reporting in July 2026. The lease carries 7 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Adco Energy, Inc.; the EWA schedule now lists a different operator.
Nixon, TX · P-5 Y, filed Mar 4, 2026
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Great Plains Resources Inc. |
| Production reports | Ginco Operating Co.through Oct 1995 |
| Latest permit | Adco Energy, Inc.Nov 8, 1988 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 900
- total depth, ft
- 1
- permits on file
- Nov 8, 1988
- last permit issued
- Jan 7, 1989
- completed
- 215
- cumulative oil, bbl
- 4
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 7, 1989
- Shut in
- —
- Plugged
- Dec 22, 2016
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 7 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Hartfield O-1-12052 | LA Vernia | Great Plains Resources, Inc. | 7 | 215 | 4 | 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.
- 1Nelms Bros. Oil Properties Inc.Apr 1994 → Jun 1994
- 2Adco Energy, Inc.Jul 1994 → Mar 1995
- 3Ginco Operating Co.Jun 1995 → Oct 1995
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 353079-99 | Drill | Adco Energy, Inc. | Nov 7, 1988 | Nov 8, 1988 | — | 900 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-12052 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 805 | 809 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 2.875 | 900 | 6 | 200 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 21, 1989 | Feb 13, 1989 | Yes |
| 00 | Feb 17, 1989 | — | — |
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 42-187-33280 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-187-33280 → 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/18733280, documented in the API reference.