WELL · 42-507-33562 · DISTRICT 1
Kiefer, Chester #42
Zavala County · Vertical
Kiefer, Chester #42 (API 42-507-33562) is a permitted well in Zavala County filed by Bollinger Drilling CO.; no completion report is on file yet.
The RRC has issued one drilling permit, issued August 29, 2025, permitted to 800 ft.
Completion filings report 3 formation tops, including Wilcox, Navarro, Escondido.
Operator of record
Del Rio, TX · P-5 Y, filed May 4, 2026 · 11 permits on file · (830) 774-3800
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | none |
| Latest permit | Bollinger Drilling Co.Aug 29, 2025 |
- 800
- total depth, ft
- 1
- permits on file
- Aug 29, 2025
- last permit issued
- —
- completed
- —
- cumulative oil, bbl
- —
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- —
Surface location
29.010447, -99.938371
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Zavala County.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 909718-99 | Drill | Bollinger Drilling Co. | Aug 6, 2025 | Aug 29, 2025 | — | 800 |
Formation tops
As filed on W-2/G-1. Subsea from 751 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 734 | 744 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 4.5 | 783 | 7.875 | 210 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 | Jul 6, 2026 | Jun 8, 2026 | 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 42-507-33562 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-507-33562 → 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.
Nearby wells and their tops
NEAREST 1 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 1 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Kiefer, Chester42-507-33565
0.0 KM · Bollinger Drilling Co. · Section with this well →
| Wilcox | 270 | 481 |
| Navarro | 420 | 331 |
| Escondido | 730 | 21 |
| Escondido | — |
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/50733562, documented in the API reference.