WELL · 42-029-35187 · DISTRICT 1
Menchaca #1B
Bexar County · Fairfield field · Producing · Vertical
Menchaca #1B (API 42-029-35187) is a well in Bexar County operated by Calk Oil Company, completed June 20, 1984 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued March 28, 1984, permitted to 1,330 ft.
It was permitted by Dicoil Production-Wes Dick and has since transferred to Calk Oil Company on the wellbore schedule.
Completion filings report one formation top, including Anachocho Liem.
Its lease has reported 3.41K barrels of oil and 18 mcf of gas since January 1993, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Dicoil Production-Wes Dick; the EWA schedule now lists a different operator.
Lytle, TX · P-5 Y, filed Apr 4, 2026 · 2 permits on file · (830) 772-4068
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Calk Oil Company |
| Production reports | Calk Oil Companythrough Mar 2026 |
| Latest permit | Dicoil Production-Wes DickMar 28, 1984 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 1,330
- total depth, ft
- 1
- permits on file
- Mar 28, 1984
- last permit issued
- Jun 20, 1984
- completed
- 3.41K
- cumulative oil, bbl
- 18
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 20, 1984
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Menchaca O-1-9765 | Fairfield | Calk Oil Company | 2 | 3.41K | 18 | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 128 · prior 12 50(+156%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Calk, Roger D.Jan 1993 → Jun 2005
- 2Calk Oil CompanyJul 2005 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 233781-99 | Drill | Dicoil Production-Wes Dick | Mar 26, 1984 | Mar 28, 1984 | — | 1,330 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-9765 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 737 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Anachocho Liem | 1,250 | -513 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,250 | 1,280 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 4.5 | 1,314 | 6.75 | 150 sx |
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 | Jul 11, 1984 | Jun 26, 1984 | — |
| 00 | Jul 10, 1984 | Jun 26, 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 42-029-35187 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-029-35187 → 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/02935187, documented in the API reference.