WELL · 42-311-37374 · DISTRICT 1
Otto-Whipple 4H Unit #4H
McMullen County · A.W.P. (Olmos) field · Producing · Horizontal
Otto-Whipple 4h Unit #4H (API 42-311-37374) is a horizontal well in Mcmullen County operated by Caturus Energy LLC, completed August 31, 2023 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued May 26, 2023, permitted to 9,646 ft.
It was permitted by Blackbrush O & G, LLC and has since transferred to Caturus Energy LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Yegua, Wilcox, Navarro, Escondido.
Its lease has reported 104K barrels of oil and 396K mcf of gas since August 2023, last reporting in July 2026.
Operator of record
Permitted by Blackbrush O & G, LLC; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Jun 4, 2026 · 77 permits on file · (888) 327-8677
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Caturus Energy LLC |
| Production reports | Caturus Energy, LLCthrough Apr 2026 |
| Latest permit | Blackbrush O & G, LLCMay 26, 2023 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,646
- total depth, ft
- 2
- permits on file
- May 26, 2023
- last permit issued
- Aug 31, 2023
- completed
- 104K
- cumulative oil, bbl
- 396K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 2023 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Aug 31, 2023
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
28.285438, -98.677140
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in McMullen County.
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Otto-Whipple 4H Unit O-1-21152 | A.W.P. (Olmos) | Caturus Energy, LLC | 1 | 104K | 396K | Aug 2023 – Jul 2026 |
Oil, barrels lease total
Last 12 months 12,586 · prior 12 28,871(-56%)
Gas, mcf lease total
Last 12 months 53,908 · prior 12 150,327(-64%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Blackbrush O & G, LLCAug 2023 → Aug 2023
- 2Kimmeridge Texas Gas, LLCSep 2023 → Jul 2025
- 3Caturus Energy, LLCAug 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 890793-98 | Drill | Blackbrush O & G, LLC | Oct 17, 2023 | May 26, 2023 | Jun 5, 2023 | 9,646 |
| 890793-99 | Drill | Blackbrush O & G, LLC | May 22, 2023 | May 26, 2023 | — | 9,646 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-21152 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 311 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| YeguaYEGUA - DISPOSAL | 476 | -165 |
| WilcoxWILCOX - DISPOSAL | 5,581 | -5,270 |
| Navarro | 6,783 | -6,472 |
| Escondido | 8,098 | -7,787 |
| Olmos | 9,480 | -9,169 |
| Anacacho | — | — |
| Austin Chalk | — | — |
| CatahoulaCATAHOULA - DISPOSAL | — | — |
| Eagle FordEAGLE FORD - H2S | — | — |
| FrioFRIO - DISPOSAL | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,257 | 19,281 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 6,368 | 12.25 | 1,590 S |
| 5.5 | 19,333 | 8.75 | 2,630 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 | Nov 21, 2023 | Sep 20, 2023 | 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 42-311-37374 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-311-37374 → 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 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Otto-Whipple 3H Unit42-311-37373
0.0 KM · Blackbrush O & G, LLC · Section with this well →
| Yegua | 476 | -165 |
| Wilcox | 5,581 | -5,270 |
| Navarro | 6,768 | -6,457 |
| Escondido | 8,121 | -7,810 |
| Olmos | 9,441 | -9,130 |
| Anacacho | — | |
| Frio | — | |
| Eagle Ford | — |
10 TOPS · FIRST 8
Otto-Whipple 2H Unit42-311-37187
0.1 KM · Blackbrush O & G, LLC · Section with this well →
| Yegua | 900 | -590 |
| Wilcox | 5,598 | -5,288 |
| Navarro | 6,805 | -6,495 |
| Escondido | 8,136 | -7,826 |
| Olmos | 9,489 | -9,179 |
| Anacacho | 11,843 | -11,533 |
| Austin Chalk | 12,232 | -11,922 |
| Eagle Ford | 12,314 | -12,004 |
10 TOPS · FIRST 8
Otto-Whipple 1H Unit42-311-37186
0.1 KM · Blackbrush O & G, LLC · Section with this well →
| Yegua | 900 | -590 |
| Wilcox | 5,638 | -5,328 |
| Navarro | 6,808 | -6,498 |
| Escondido | 8,132 | -7,822 |
| Olmos | 9,457 | -9,147 |
| Anacacho | 11,820 | -11,510 |
| Austin Chalk | 12,211 | -11,901 |
| Eagle Ford | 12,283 | -11,973 |
10 TOPS · FIRST 8
Otto-Whipple Unit D42-311-37506
0.1 KM · Kimmeridge Texas Gas, LLC · Section with this well →
| Wilcox | 4,388 | -4,070 |
| Navarro | 8,163 | -7,845 |
| Olmos | 9,428 | -9,110 |
| Anacacho | 11,772 | -11,454 |
| Austin Chalk | 12,159 | -11,841 |
| Eagle Ford | 12,246 | -11,928 |
| Yegua | — | |
| Catahoula | — |
10 TOPS · FIRST 8
Otto-Whipple Unit C42-311-37505
0.1 KM · Kimmeridge Texas Gas, LLC · Section with this well →
| Wilcox | 4,315 | -3,997 |
| Navarro | 8,191 | -7,873 |
| Olmos | 9,441 | -9,123 |
| Anacacho | 11,774 | -11,456 |
| Austin Chalk | 12,180 | -11,862 |
| Eagle Ford | 12,268 | -11,950 |
| Frio | — | |
| Yegua | — |
10 TOPS · FIRST 8
Otto Unit42-311-37192
0.3 KM · Sandpoint Operating, LLC · Section with this well →
| Yegua | 512 | -208 |
| Wilcox | 5,547 | -5,243 |
| Escondido | 8,122 | -7,818 |
| Olmos | 9,423 | -9,119 |
| Anacacho | 11,727 | -11,423 |
| Austin Chalk | 12,144 | -11,840 |
| Eagle Ford | 12,238 | -11,934 |
| Catahoula | — |
10 TOPS · FIRST 8
Donnell-Whipple42-311-37232
2.6 KM · Blackbrush O & G, LLC · Section with this well →
| Yegua | 750 | -449 |
| Wilcox | 5,190 | -4,889 |
| Navarro | 6,485 | -6,184 |
| Escondido | 7,841 | -7,540 |
| Olmos | 9,240 | -8,939 |
| Anacacho | 11,586 | -11,285 |
| Austin Chalk | 11,727 | -11,426 |
| Eagle Ford | 11,829 | -11,528 |
10 TOPS · FIRST 8
Donnell-Whipple42-311-37230
2.6 KM · Blackbrush O & G, LLC · Section with this well →
| Yegua | 750 | -449 |
| Wilcox | 5,162 | -4,861 |
| Navarro | 6,468 | -6,167 |
| Escondido | 7,878 | -7,577 |
| Olmos | 9,210 | -8,909 |
| Anacacho | 11,555 | -11,254 |
| Eagle Ford | 11,829 | -11,528 |
| Catahoula | — |
10 TOPS · FIRST 8
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
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