WELL · 42-391-33276 · DISTRICT 2
J.M. O Brien JLB #1H
Refugio County · Greta (4400) field · Producing · Horizontal
J.M. O Brien Jlb #1H (API 42-391-33276) is a horizontal well in Refugio County operated by South Texas Operating Company, completed November 19, 2022 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued October 10, 2022, permitted to 4,800 ft.
It was permitted by Jura Energy Operating LLC and has since transferred to South Texas Operating Company on the wellbore schedule.
Completion filings report 3 formation tops, including Catahoula, Frio, Jackson.
Its lease has reported 57.7K barrels of oil since November 2022, last reporting in July 2026.
Operator of record
Permitted by Jura Energy Operating LLC; the EWA schedule now lists a different operator.
San Antonio, TX · P-5 Y, filed Nov 4, 2025 · 18 permits on file · (210) 827-2509
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | South Texas Operating Company |
| Production reports | South Texas Operating Companythrough Apr 2026 |
| Latest permit | Jura Energy Operating LLCOct 10, 2022 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,800
- total depth, ft
- 1
- permits on file
- Oct 10, 2022
- last permit issued
- Nov 19, 2022
- completed
- 57.7K
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 2022 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 19, 2022
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
28.391988, -97.187612
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Refugio 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 |
|---|---|---|---|---|---|---|
| J.M. O'Brien JLB O-2-12584 | Greta (4400) | South Texas Operating Company | 1 | 57.7K | 0 | Nov 2022 – Jul 2026 |
Oil, barrels lease total
Last 12 months 9,223 · prior 12 13,328(-31%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Jura Energy Operating LLCDec 2022 → Jun 2023
- 2South Texas Operating CompanyJul 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 884512-99 | Drill | Jura Energy Operating LLC | Sep 30, 2022 | Oct 10, 2022 | Nov 2, 2022 | 4,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-12584 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 58 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,032 | 6,943 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,280 | 12.25 | 495 S |
| 7 | 5,032 | 8.75 | 390 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 2, 2023 | May 9, 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 42-391-33276 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-33276 → 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.
Thomas O'Connor42-391-33151
0.4 KM · Acock/Anaqua Operating Co., LP · Section with this well →
| Catahoula | 3,452 | -3,394 |
| Frio | 4,274 | -4,216 |
| Jackson | — |
O'Connor42-391-33267
0.8 KM · Greta Operating Company LLC · Section with this well →
| Catahoula | 3,455 | -3,436 |
| Frio | 4,323 | -4,304 |
| Jackson | — |
J. M. O'Brien A42-391-32649
1.7 KM · Greta Operating Company LLC · Section with this well →
| Catahoula | 3,444 | -3,385 |
| Greta | 4,340 | -4,281 |
| Top of Sinton | 5,068 | -5,009 |
| Top of Larosa | 5,462 | -5,403 |
| Frio | — | |
| Jackson | — | |
| Catahoula | — |
Lambert, M.F.42-391-31289
2.2 KM · Pennzoil Producing Co. · Section with this well →
| L-3 | 1,855 | -1,782 |
| L-8 | 2,221 | -2,148 |
| 4400 | 4,355 | -4,282 |
Heard, Clement42-391-00847
2.9 KM · Hilcorp Energy Company · Section with this well →
| Catahoula | 3,616 | -3,557 |
| Frio | 4,397 | -4,338 |
| Jackson | — |
Tom O'Connor (5800 SD) Fld. Unit42-391-32970
3.0 KM · Hilcorp Energy Company · Section with this well →
| Lagarto | 2,750 | -2,696 |
| Catahoula | 3,599 | -3,545 |
| Oakville | 4,100 | -4,046 |
| Greta | 4,300 | -4,246 |
| Frio | 4,355 | -4,301 |
| Anahuac | 4,365 | -4,311 |
| Frio | 5,000 | -4,946 |
| Top 5800 | 5,779 | -5,725 |
11 TOPS · FIRST 8
Tom O'Connor (5800 SD) FLD Unit42-391-31883
3.1 KM · Quintana Pet. Corp. · Section with this well →
| Lagarto | 1,500 | -1,449 |
| Surface Sand Clay | 1,500 | -1,449 |
| Oakville | 2,750 | -2,699 |
| Catahoula | 3,300 | -3,249 |
| Anahuac | 4,100 | -4,049 |
| Catahoula | 4,100 | -4,049 |
| Frio | 4,365 | -4,314 |
| Anahuac | 4,365 | -4,314 |
17 TOPS · FIRST 8
JFB Heard - Htex #1H42-391-33209
3.1 KM · Acock/Anaqua Operating Co., LP · Section with this well →
| Catahoula | 1,600 | -1,540 |
| Frio | 1,800 | -1,740 |
| Jackson | 1,900 | -1,840 |
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/39133276, documented in the API reference.