WELL · 42-187-33182 · DISTRICT 1
Moore Chalmers #4
Guadalupe County · LA Vernia field · Producing · Vertical
Moore Chalmers #4 (API 42-187-33182) is a well in Guadalupe County operated by Donoco Oil Company, completed January 30, 1987 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued September 16, 1986, permitted to 1,000 ft.
It was permitted by Robbins, L. C. and has since transferred to Donoco Oil Company on the wellbore schedule.
Completion filings report one formation top, including Navarro.
Its lease has reported 3.21K barrels of oil and 21 mcf of gas since January 1993, last reporting in July 2026. The lease carries 3 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Robbins, L. C.; the EWA schedule now lists a different operator.
LA Vernia, TX · P-5 Y, filed Sep 4, 2025 · (830) 660-6344
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Donoco Oil Company |
| Production reports | Donoco Oil Companythrough Apr 2026 |
| Latest permit | Robbins, L. C.Sep 16, 1986 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 1,000
- total depth, ft
- 1
- permits on file
- Sep 16, 1986
- last permit issued
- Jan 30, 1987
- completed
- 3.21K
- cumulative oil, bbl
- 21
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 30, 1987
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
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 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Moore, Chalmers O-1-9018 | LA Vernia | Donoco Oil Company | 3 | 3.21K | 21 | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 7 · prior 12 24(-71%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Robbins, L. C.Jan 1993 → Sep 1994
- 2Donoco Oil CompanyOct 1994 → Apr 2026
- 3Donelco IndustryOct 1999 → Nov 2002
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 320595-99 | Drill | Robbins, L. C. | Sep 16, 1986 | Sep 16, 1986 | — | 1,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-9018 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 762 | 774 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 4.5 | 830 | 6.75 | 89 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 25, 1987 | Feb 10, 1987 | Yes |
| 00 | Feb 18, 1987 | — | — |
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 42-187-33182 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-187-33182 → 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/18733182, documented in the API reference.