WELL · 42-021-31100 · DISTRICT 1
Yoast #10
Bastrop County · Vertical
Yoast #10 (API 42-021-31100) is a former disposal or injection well in Bastrop County, last operated by Cibolo Energy Operating, Inc.; its UIC permit is no longer active.
The RRC has issued 3 drilling permits between 1987 and 2011, permitted to 1,600 ft.
Completion filings report one formation top, including Serpentine.
Its 2 leases have reported 12.9K barrels of oil and 109 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
Bulverde, TX · P-5 Y, filed Jan 4, 2026 · 30 permits on file · (210) 860-7445
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Cibolo Energy Operating, Inc.through Dec 2015 |
| Latest permit | Cibolo Energy Operating, Inc.Oct 19, 2011 |
- 1,600
- total depth, ft
- 3
- permits on file
- Oct 19, 2011
- last permit issued
- —
- completed
- 12.9K
- cumulative oil, bbl
- 109
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- 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 |
|---|---|---|---|---|---|---|
| Yoast O-1-15030 | Yoast | Cibolo Energy Operating, Inc. | 6 | 2.33K | 0 | Sep 2008 – Jul 2026 |
| Yoast O-1-3624 | Yoast | Hellums, Harold | 7 | 10.6K | 109 | Jan 1993 – Mar 2008 |
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.
- 1Hellums, HaroldJan 1993 → Mar 2002
- 2Cibolo Energy Operating, Inc.Sep 2008 → Dec 2015
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 726390-99 | Reenter | Cibolo Energy Operating, Inc. | Oct 17, 2011 | Oct 19, 2011 | — | 1,545 |
| 656705-99 | Reenter | Cibolo Energy Operating, Inc. | Mar 5, 2008 | Sep 24, 2008 | Jun 10, 2008 | 1,545 |
| 336406-99 | Drill | Hellums, Harold | Sep 24, 1987 | Sep 28, 1987 | — | 1,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-3624 | — | — | — | — |
| — | — O-1-15030 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 475 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Serpentine | 1,370 | -895 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,370 | 1,545 | Perforated |
| 1,370 | 1,545 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 7 | 1,370 | 9.875 | — |
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 26, 2014 | Jul 14, 2011 | — |
| 00 | Mar 14, 1988 | Feb 22, 1988 | Yes |
| 00 | Mar 8, 1988 | — | — |
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 42-021-31100 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-021-31100 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 0
- bbl, all reported
- Aug 2019
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000099829 | H-1 Injection | Canceled Jan 5, 2023 | 0 | 1,027 | 1,370–1,545 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 0
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/02131100, documented in the API reference.