WELL · 42-041-30723 · DISTRICT 3
Kristen Unit #1
Brazos County · Kurten (Buda) field · Horizontal
Kristen Unit #1 (API 42-041-30723) is a plugged horizontal well in Brazos County, plugged August 23, 1993, last operated by Advanced Specialities Oil Corp..
The RRC has issued 2 drilling permits (amended once) between 1982 and 2004, permitted to 11,000 ft.
It was permitted by Holley Oil Company, LLC and has since transferred to Advanced Specialities Oil Corp. on the wellbore schedule.
Completion filings report 3 formation tops, including Austin Chalk, Buda, Georgetown.
Its 2 leases have reported 148K barrels of oil and 214K mcf of gas since January 1993, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Advanced Specialities Oil Corp.
Permitted by Holley Oil Company, LLC; the EWA schedule now lists a different operator.
Odessa, TX · P-5 Y, filed Dec 2, 1995 · 6 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Advanced Specialities Oil Corp. |
| Production reports | Buffco Production Inc.through Apr 2026 |
| Latest permit | Holley Oil Company, LLCFeb 13, 2004 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,000
- total depth, ft
- 3
- permits on file
- Feb 13, 2004
- last permit issued
- May 9, 1982
- completed
- 148K
- cumulative oil, bbl
- 214K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 9, 1982
- Shut in
- —
- Plugged
- Aug 23, 1993
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Kristen O-3-24555 | Kurten (Buda) | Buffco Production Inc. | 1 | 148K | 214K | May 2004 – Jul 2026 |
| Kristen Unit O-3-15674 | Kurten (Buda) | Advanced Specialities Oil Corp. | 1 | 0 | 1 | Jan 1993 – Aug 2003 |
Oil, barrels lease total
Last 12 months 5,463 · prior 12 5,736(-5%)
Gas, mcf lease total
Last 12 months 4,382 · prior 12 5,936(-26%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Holley Oil Company, LLCMay 2004 → Jan 2008
- 2Pierce Operating Company, L.L.C.Feb 2008 → Feb 2012
- 3Buffco Production Inc.Mar 2012 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 542013-98 | Reenter | Holley Oil Company, LLC | Jun 22, 2004 | Feb 13, 2004 | — | 9,500 |
| 542013-99 | Reenter | Holley Oil Company, LLC | Feb 13, 2004 | Feb 13, 2004 | Feb 13, 2004 | 8,975 |
| 153432-99 | Drill | Advanced Specialities Oil Corp. | Mar 16, 1982 | Mar 16, 1982 | Mar 16, 1982 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-15674 | — | — | — | — |
| — | — O-3-24555 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 322 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 8,025 | -7,703 |
| Buda | 8,713 | -8,391 |
| Georgetown | 8,813 | -8,491 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,719 | 8,780 | Perforated |
| 8,760 | 9,803 | Perforated |
| 8,760 | 11,885 | Perforated |
| 8,760 | 13,000 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 3,516 | 12.25 | 1,700 S |
| 8.625 | 3,516 | — | — |
| 2.375 | 8,605 | — | — |
| 5.5 | 8,760 | 7.875 | 320 S |
| 5.5 | 8,978 | 7.875 | 670 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 | Aug 9, 2004 | May 24, 2004 | Yes |
| 00 | Jun 29, 2004 | — | — |
| 00 | Jan 12, 1984 | May 24, 1982 | — |
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 42-041-30723 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-041-30723 → 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/04130723, documented in the API reference.