WELL · 42-507-32854 · DISTRICT 1
Kiefer Chester #36
Zavala County · Windmill Creek (Escondido) field · Producing · Vertical
Kiefer Chester #36 (API 42-507-32854) is a well in Zavala County operated by S-Resources LLC, completed April 26, 2012 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued December 14, 2011, permitted to 1,000 ft.
It was permitted by Bollinger Drilling CO. and has since transferred to S-Resources LLC on the wellbore schedule.
Completion filings report 2 formation tops, including Fresh Water, Escondido.
Its lease has reported 61.1K barrels of oil and 81 mcf of gas since January 1993, last reporting in July 2026. The lease carries 15 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Bollinger Drilling Co.; the EWA schedule now lists a different operator.
Austin, TX · P-5 Y, filed Jun 4, 2026 · (713) 303-9998
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | S-Resources LLC |
| Production reports | S-Resources, LLCthrough Apr 2026 |
| Latest permit | Bollinger Drilling Co.Dec 14, 2011 |
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
- Dec 14, 2011
- last permit issued
- Apr 26, 2012
- completed
- 61.1K
- cumulative oil, bbl
- 81
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 26, 2012
- 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 15 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Kiefer, Chester O-1-9351 | Windmill Creek (Escondido) | S-Resources, LLC | 15 | 61.1K | 81 | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 2,081 · prior 12 2,068(+1%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Quatro Oil and Gas, Inc.Jan 1993 → Nov 1998
- 2Brown, John Oil Co.Mar 1999 → Jul 2001
- 3Regency Energy, Inc.Jun 2002 → Mar 2012
- 4Bollinger Drilling Co.Apr 2012 → Sep 2025
- 5S-Resources, LLCOct 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 729692-99 | Drill | Bollinger Drilling Co. | Dec 8, 2011 | Dec 14, 2011 | Apr 10, 2012 | 1,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-9351 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 731 | 742 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 4.5 | 773 | 6.25 | 85 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 3, 2013 | Jun 21, 2012 | Yes |
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 42-507-32854 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-507-32854 → 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/50732854, documented in the API reference.