WELL · 42-039-33371 · DISTRICT 3
H. Blackstone #1
Brazoria County · Chocolate Bayou ( Alibel) field · Directional
H. Blackstone #1 (API 42-039-33371) is a well in Brazoria County operated by Cimarron Engineering LLC, completed April 8, 2023.
The RRC has issued 2 drilling permits between 2022 and 2024, permitted to 11,502 ft.
Completion filings report 9 formation tops, including Miocene (undifferentiated), Frio, Grub, A;Ibel.
Its 2 leases have reported 1.9K barrels of oil and 1.28M mcf of gas since April 2023, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Kingsville, TX · P-5 Y, filed Sep 4, 2025 · 93 permits on file · (361) 522-2053
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Cimarron Engineering LLC |
| Production reports | Cimarron Engineering, LLCthrough Apr 2026 |
| Latest permit | Cimarron Engineering, LLCJan 9, 2024 |
- 11,502
- total depth, ft
- 2
- permits on file
- Jan 9, 2024
- last permit issued
- Apr 8, 2023
- completed
- 1.9K
- cumulative oil, bbl
- 1.28M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2023 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 8, 2023
- Shut in
- —
- Plugged
- —
Surface location
29.262390, -95.134664
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Brazoria County.
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 |
|---|---|---|---|---|---|---|
| H. Blackstone G-3-296708 | Pegasus Gulf Coast (Grubbs) | Cimarron Engineering, LLC | 1 | 0 | 1.24M | Jan 2024 – Jul 2026 |
| H. Blackstone O-3-28084 | Chocolate Bayou ( Alibel) | Cimarron Engineering, LLC | 1 | 1.9K | 41.7K | Apr 2023 – May 2024 |
Gas, mcf lease total
Last 12 months 417,163 · prior 12 580,243(-28%)
Oil, barrels lease total
Last 12 months 0 · prior 12 0
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Cimarron Engineering, LLCApr 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 896362-99 | Recompletion | Cimarron Engineering, LLC | Jan 5, 2024 | Jan 9, 2024 | Jan 25, 2023 | 11,502 |
| 886581-99 | Drill | Cimarron Engineering, LLC | Dec 14, 2022 | Dec 20, 2022 | Jan 25, 2023 | 11,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-296708 | — | — | — | — |
| — | — O-3-28084 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 11 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE - DISPOSAL | 2,850 | -2,839 |
| FrioFRIO - DISPOSAL | 10,360 | -10,349 |
| Grub | 10,610 | -10,599 |
| A;ibel | 11,227 | -11,216 |
| Alibel | 11,227 | -11,216 |
| CaprockCAPROCK - DISPOSAL | — | — |
| Het Lime - Disposal | — | — |
| Oligocene - Disposal | — | — |
| Otis - Disposal | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,991 | 11,012 | Perforated |
| 11,656 | 11,665 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 3,069 | 13.5 | 1,400 S |
| 7.625 | 10,432 | 9.875 | 400 S |
| 4.5 | 11,890 | 6.75 | 405 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 | Apr 23, 2024 | Jan 29, 2024 | — |
| 00 | Nov 28, 2023 | Sep 8, 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 42-039-33371 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-039-33371 → 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.
Black Stone Ivory42-039-33172
0.5 KM · Elliott Oil & Gas Operating Co. · Section with this well →
| Miocene (undifferentiated) | 2,090 | -2,081 |
| Otis - Disposal | — | |
| Caprock | — | |
| Frio | — | |
| Het Lime - Disposal | — | |
| Oligocene - Disposal | — |
Twin Peaks42-039-33366
0.8 KM · Kebo Oil & Gas, Inc. · Section with this well →
| Miocene (undifferentiated) | 3,500 | -3,490 |
| Frio | 10,196 | -10,186 |
| Het Lime - Disposal | — | |
| Caprock | — | |
| Otis - Disposal | — | |
| Oligocene - Disposal | — |
Blackstone Hlavinka42-039-33294
2.0 KM · Channa Operating, LLC · Section with this well →
| Caprock | 1,800 | -1,791 |
| Miocene (undifferentiated) | 7,080 | -7,071 |
| Het Lime - Disposal | 8,600 | -8,591 |
| Frio | 9,760 | -9,751 |
| Oligocene - Disposal | 9,940 | -9,931 |
| Otis - Disposal | — |
Blackstone-Hlavinka42-039-04480
2.7 KM · Elliott Oil & Gas Operating Co. · Section with this well →
| Miocene (undifferentiated) | 7,250 | -7,242 |
| Frio | 9,690 | -9,682 |
| Grubbs | 10,330 | -10,322 |
| Alibel | 10,750 | -10,742 |
Fish Camp42-039-33250
2.8 KM · Square Mile Energy, L.L.C. · Section with this well →
| Miocene (undifferentiated) | 7,300 | -7,292 |
| Frio | 9,880 | -9,872 |
| Grubb | 10,180 | -10,172 |
| Oligocene - Disposal | — | |
| Caprock | — | |
| Het Lime - Disposal | — | |
| Otis - Disposal | — |
IP Farms "PG"42-039-32462
3.5 KM · Tepco, Inc. · Section with this well →
| Miocene (undifferentiated) | 7,155 | -7,148 |
| Frio | 9,610 | -9,603 |
Blackstone42-039-33300
4.6 KM · Corum Production Company · Section with this well →
| T LWR Miocene | 4,555 | |
| RM 6050 SD | 6,180 | |
| RM 6400 | 6,410 | |
| Caprock | — | |
| Oligocene - Disposal | — | |
| Otis - Disposal | — | |
| Miocene (undifferentiated) | — | |
| Het Lime - Disposal | — |
9 TOPS · FIRST 8
Shields HBR42-167-31539
4.8 KM · Hilcorp Energy Company · Section with this well →
| Miocene (undifferentiated) | 3,542 | -3,529 |
| Frio | 10,429 | -10,416 |
| Pliocene - Disposal | — | |
| San Miguel | — |
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/03933371, documented in the API reference.