TEXAS · WELLS · HEMPHILL COUNTY · HELTON LEASE · API 42-211-33233 · DISTRICT 08
Helton #521
Hemphill County · Buffalo Wallow (Granite Wash) field · Producing · Vertical
Helton #521 (API 42-211-33233) is a well in Hemphill County operated by Mmgl Txph LLC, completed October 31, 2005 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued February 24, 2005, permitted to 12,820 ft.
It was permitted by Samson Lone Star LP and has since transferred to Mmgl Txph LLC on the wellbore schedule.
Completion filings report 6 formation tops, including Granite Wash, Brown Dolomite, Pennsylvanian, Tonkawa.
Its lease has reported 2.94K barrels of oil and 291K mcf of gas since October 2005, last reporting volume in April 2026.
Operator of record
Permitted by Samson Lone Star LP; the EWA schedule now lists a different operator.
- Based in
- Dallas, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jul 24, 2025
- Permits on file
- 10
- Phone
- (972) 701-8377
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Mmgl Txph LLC |
| Production reports | Mmgl Txph, LLCthrough Apr 2026 |
| Latest permit | Samson Lone Star LPFeb 24, 2005 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,820
- total depth, ft
- 1
- permits on file
- Feb 24, 2005
- last permit issued
- Oct 31, 2005
- completed
- 2.94K
- cumulative oil, bbl
- 291K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2005 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 31, 2005
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 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 |
|---|---|---|---|---|---|---|
| Helton G-14-213361 | Buffalo Wallow (Granite Wash) | Mmgl Txph, LLC | 1 | 2.94K | 291K | Oct 2005 – Apr 2026 |
Gas, mcf lease total
Last 12 months 596 · prior 12 453(+32%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Samson Lone Star LPOct 2005 → Jun 2007
- 2Samson Lone Star, LLCJul 2007 → Apr 2015
- 3Tecolote Energy Operating, LLCAug 2017 → Dec 2019
- 4Blackbeard Operating, LLCJan 2020 → Sep 2023
- 5Mmgl Txph, LLCOct 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 558153-99 | Drill | Samson Lone Star LP | Feb 24, 2005 | Feb 24, 2005 | Sep 2, 2005 | 14,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 31, 2005 | Helton G-14-213361 | Buffalo Wallow (Granite Wash) | Mmgl Txph LLC | Producing | 12,820 |
Formation tops
As filed on W-2/G-1. Subsea from 2,558 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Granite Wash | 1,122 | 1,436 |
| Brown Dolomite | 4,478 | -1,920 |
| PennsylvanianPENN SHALE | 6,550 | -3,992 |
| Tonkawa | 8,916 | -6,358 |
| Cleveland | 10,275 | -7,717 |
| Oswego | 10,568 | -8,010 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,291 | 12,581 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 3,182 | 11 | 1,810 S |
| 5.5 | 12,815 | 7.875 | 535 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Apr 17, 2006 | Dec 15, 2005 | Yes |
| 00 | Jan 24, 2006 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Oct 14, 2008. Density, Neutron. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| NEUTRON/DENSITY POROSITYSpans Granite Wash, Brown Dolomite, Pennsylvanian, Tonkawa, Cleveland, Oswego | TIFF | 3,173 to 12,814 | Oct 14, 2008run Sep 21, 2005 | 1.91 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-211-33233 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-211-33233 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/21133233, documented in the API reference.