WELL · 42-203-35603 · DISTRICT 6
Mayo-Griffin HV Unit A #1H
Harrison County · Carthage (Haynesville Shale) field · Producing · Horizontal
Mayo-Griffin HV Unit A #1H (API 42-203-35603) is a horizontal well in Harrison County operated by Tgnr East Texas II LLC, completed April 1, 2024 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued August 11, 2023, permitted to 13,000 ft.
It was permitted by Rockcliff Energy Operating LLC and has since transferred to Tgnr East Texas II LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Goodland, Paluxy, Glen Rose, Rodessa.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Rockcliff Energy Operating LLC; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Feb 4, 2026 · 162 permits on file · (844) 888-9546
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | TGNR East Texas II LLC |
| Production reports | TGNR East Texas II LLCthrough Apr 2026 |
| Latest permit | Rockcliff Energy Operating LLCAug 11, 2023 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 13,000
- total depth, ft
- 2
- permits on file
- Aug 11, 2023
- last permit issued
- Apr 1, 2024
- completed
- 0
- cumulative oil, bbl
- 5.91M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2024 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 1, 2024
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
32.416282, -94.219701
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Harrison 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 |
|---|---|---|---|---|---|---|
| Mayo-Griffin HV Unit A G-6-298845 | Carthage (Haynesville Shale) | TGNR East Texas II LLC | 1 | 0 | 5.91M | Apr 2024 – Jul 2026 |
Gas, mcf lease total
Last 12 months 1,505,523 · prior 12 3,894,669(-61%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1TGNR East Texas II LLCApr 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 892329-98 | Drill | Rockcliff Energy Operating LLC | Aug 18, 2023 | Aug 11, 2023 | — | 13,000 |
| 892329-99 | Drill | Rockcliff Energy Operating LLC | Jul 24, 2023 | Aug 11, 2023 | Aug 28, 2023 | 13,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-6-298845 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 326 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Goodland | 2,618 | -2,292 |
| Paluxy | 3,080 | -2,754 |
| Glen Rose | 3,413 | -3,087 |
| Rodessa | 5,183 | -4,857 |
| PettitPETTET | 5,910 | -5,584 |
| Travis Peak | 6,303 | -5,977 |
| Cotton Valley | 8,138 | -7,812 |
| Blossom | — | — |
| NacatochNACATOCH - OVER PRESSURED, WATER | — | — |
| Woodbine | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,532 | 19,530 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,510 | 17.5 | 940 S |
| 7.625 | 9,368 | 12.25 | 2,320 S |
| 5.5 | 19,556 | 6.75 | 1,090 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 | Mar 28, 2025 | Jan 21, 2025 | 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 42-203-35603 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-203-35603 → 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.
Mayo-Griffin HV Unit B42-203-35604
0.0 KM · Rockcliff Energy Operating LLC · Section with this well →
| Goodland | 2,614 | -2,288 |
| Paluxy | 3,078 | -2,752 |
| Glen Rose | 3,406 | -3,080 |
| Rodessa | 5,189 | -4,863 |
| Pettit | 5,915 | -5,589 |
| Travis Peak | 6,316 | -5,990 |
| Cotton Valley | 8,134 | -7,808 |
| Woodbine | — |
10 TOPS · FIRST 8
G.D. McKay HV Unit D42-203-35399
0.0 KM · Rockcliff Energy Operating LLC · Section with this well →
| Nacatoch | 900 | -576 |
| Blossom | 1,880 | -1,556 |
| Woodbine | 2,540 | -2,216 |
| Goodland | 2,660 | -2,336 |
| Paluxy | 3,420 | -3,096 |
| Glen Rose | 4,790 | -4,466 |
| Rodessa | 5,620 | -5,296 |
| Travis Peak | 5,860 | -5,536 |
10 TOPS · FIRST 8
G.D. McKay HV Unit E42-203-35400
0.0 KM · Rockcliff Energy Operating LLC · Section with this well →
| Nacatoch | 900 | -576 |
| Blossom | 1,880 | -1,556 |
| Woodbine | 2,540 | -2,216 |
| Goodland | 2,660 | -2,336 |
| Paluxy | 3,420 | -3,096 |
| Glen Rose | 4,790 | -4,466 |
| Rodessa | 5,620 | -5,296 |
| Travis Peak | 5,860 | -5,536 |
10 TOPS · FIRST 8
G.D. McKay HV Unit F42-203-35401
0.0 KM · Rockcliff Energy Operating LLC · Section with this well →
| Nacatoch | 900 | -577 |
| Blossom | 1,880 | -1,557 |
| Woodbine | 2,540 | -2,217 |
| Goodland | 2,660 | -2,337 |
| Paluxy | 3,420 | -3,097 |
| Glen Rose | 4,790 | -4,467 |
| Rodessa | 5,620 | -5,297 |
| Travis Peak | 5,860 | -5,537 |
10 TOPS · FIRST 8
G.D. McKay HV Unit H42-203-35403
0.7 KM · Rockcliff Energy Operating LLC · Section with this well →
| Nacatoch | 900 | -562 |
| Blossom | 1,880 | -1,542 |
| Woodbine | 2,540 | -2,202 |
| Goodland | 2,660 | -2,322 |
| Paluxy | 3,420 | -3,082 |
| Glen Rose | 4,790 | -4,452 |
| Rodessa | 5,620 | -5,282 |
| Pettit | 5,970 | -5,632 |
10 TOPS · FIRST 8
G.D. McKay HV Unit G42-203-35402
0.7 KM · Rockcliff Energy Operating LLC · Section with this well →
| Nacatoch | 900 | -562 |
| Blossom | 1,880 | -1,542 |
| Woodbine | 2,540 | -2,202 |
| Goodland | 2,660 | -2,322 |
| Paluxy | 3,420 | -3,082 |
| Glen Rose | 4,790 | -4,452 |
| Rodessa | 5,620 | -5,282 |
| Travis Peak | 5,860 | -5,522 |
10 TOPS · FIRST 8
Mayo-Griffin HV Unit C42-203-35605
0.7 KM · Rockcliff Energy Operating LLC · Section with this well →
| Goodland | 2,632 | -2,294 |
| Paluxy | 3,109 | -2,771 |
| Glen Rose | 3,432 | -3,094 |
| Rodessa | 5,217 | -4,879 |
| Pettit | 5,943 | -5,605 |
| Travis Peak | 6,326 | -5,988 |
| Cotton Valley | 8,161 | -7,823 |
| Nacatoch | — |
10 TOPS · FIRST 8
Mayo-Griffin HV Unit D42-203-35606
0.7 KM · TGNR East Texas II LLC · Section with this well →
| Goodland | 2,637 | -2,299 |
| Paluxy | 3,114 | -2,776 |
| Glen Rose | 3,427 | -3,089 |
| Rodessa | 5,218 | -4,880 |
| Pettit | 5,946 | -5,608 |
| Travis Peak | 6,322 | -5,984 |
| Cotton Valley | 8,173 | -7,835 |
| Nacatoch | — |
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
Developers: this page as JSON is GET /v1/data/wells/20335603, documented in the API reference.