WELL · 42-187-31162 · DISTRICT 1
Gambrell W.M. -A- #1
Guadalupe County · Dunlap field · Vertical
Gambrell W.M. -A- #1 (API 42-187-31162) is a well in Guadalupe County operated by Chessher Otto Drilling Company, completed August 26, 1980.
The RRC has issued one drilling permit, issued April 17, 1980, permitted to 2,600 ft.
It was permitted by Morrison, Donald M. and has since transferred to Chessher Otto Drilling Company on the wellbore schedule.
Its 2 leases have reported 21.6K barrels of oil and 1.28K mcf of gas since January 1993, last reporting in July 2026. The leases carry 13 wells, so these are lease totals, not this well alone.
Operator of record
Chessher Otto Drilling Company
Permitted by Morrison, Donald M.; the EWA schedule now lists a different operator.
- Based in
- Kearney, MO
- P-5 status
- Inactive (I)
- P-5 last filed
- Dec 19, 2012
- Phone
- (830) 931-7171
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Chessher Otto Drilling Company |
| Production reports | Enhanced RS, Inc.through Feb 2026 |
| Latest permit | Morrison, Donald M.Apr 17, 1980 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 2,600
- total depth, ft
- 1
- permits on file
- Apr 17, 1980
- last permit issued
- Aug 26, 1980
- completed
- 21.6K
- cumulative oil, bbl
- 1.28K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 26, 1980
- Shut in
- —
- Plugged
- —
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 2 leases this well is completed on; they carry 13 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Haass, Paul F. Jr. "A" O-1-3797 | Dunlap | Enhanced RS, Inc. | 11 | 20.4K | 785 | Jan 1993 – Jul 2026 |
| Gambrell, W.M. -A- O-1-6859 | Dunlap | Chessher, Otto Drilling Company | 2 | 1.16K | 496 | Jan 1993 – Nov 2001 |
Oil, barrels lease total
Last 12 months 43 · prior 12 133(-68%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Staffa, Dottie R.Jan 1993 → Jun 1996
- 2Chessher, Otto Drilling CompanySep 2001 → Dec 2013
- 3Diana & Paul Haass, LLCJan 2014 → May 2017
- 4Lechuza Oil & Gas, LLCAug 2018 → Sep 2021
- 5Enhanced RS, Inc.Dec 2021 → Feb 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 78594-99 | Drill | Morrison, Donald M. | Apr 17, 1980 | Apr 17, 1980 | — | 2,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-3797 | — | — | — | — |
| — | — O-1-6859 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,794 | 2,446 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 2 | 2,300 | — | — |
| 5 | 2,476 | 7 | 435 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 | Sep 27, 2001 | Apr 30, 1981 | — |
| 00 | Jan 12, 1984 | Apr 30, 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 42-187-31162 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-187-31162 → 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/18731162, documented in the API reference.