TEXAS · WELLS · DIMMIT COUNTY · DIAMOND H STATE LEASE · API 42-127-34403 · DISTRICT 01
Diamond H State #8H
Dimmit County · Briscoe Ranch (Eagleford) field · Producing · Horizontal
Diamond H State #8H (API 42-127-34403) is a horizontal well in Dimmit County operated by Javelin Energy Partners Mgmt LLC, completed March 8, 2012 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued November 21, 2011, permitted to 7,548 ft.
It was permitted by Anadarko E&P Onshore LLC and has since transferred to Javelin Energy Partners Mgmt LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Escondido, Olmos, Eagle Ford.
Its lease has reported 117K barrels of oil and 510K mcf of gas since March 2012, last reporting volume in April 2026.
Operator of record
Javelin Energy Partners Mgmt LLC
Permitted by Anadarko E&P Onshore LLC; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Feb 24, 2026
- Permits on file
- 233
- Phone
- (469) 575-3800
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Javelin Energy Partners Mgmt LLC |
| Production reports | Javelin Energy Partners Mgmt LLCthrough Apr 2026 |
| Latest permit | Anadarko E&P Onshore LLCNov 21, 2011 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,548
- total depth, ft
- 2
- permits on file
- Nov 21, 2011
- last permit issued
- Mar 8, 2012
- completed
- 117K
- cumulative oil, bbl
- 510K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 2012 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 8, 2012
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 |
|---|---|---|---|---|---|---|
| Diamond H State G-1-266614 | Briscoe Ranch (Eagleford) | Javelin Energy Partners Mgmt LLC | 1 | 117K | 510K | Mar 2012 – Apr 2026 |
Gas, mcf lease total
Last 12 months 17,934 · prior 12 14,270(+26%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Anadarko E&P Company LPMar 2012 → Dec 2012
- 2Anadarko E&P Onshore LLCJan 2013 → Feb 2017
- 3SN EF Maverick, LLCMar 2017 → Aug 2023
- 4Javelin Energy Partners Mgmt LLCSep 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 728301-98 | Drill | Anadarko E&P Onshore LLC | Apr 23, 2013 | Nov 21, 2011 | Dec 3, 2011 | 7,527 |
| 728301-99 | Drill | Anadarko E&P Company LP | Nov 15, 2011 | Nov 21, 2011 | Dec 3, 2011 | 8,700 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 8, 2012 | Diamond H State G-1-266614 | Briscoe Ranch (Eagleford) | Javelin Energy Partners Mgmt LLC | Producing | 7,548 |
Formation tops
As filed on W-2/G-1. Subsea from 473 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Escondido | 3,666 | -3,193 |
| Olmos | 4,741 | -4,268 |
| Eagle FordEAGLEFORD | 7,329 | -6,856 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,127 | 11,917 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,865 | 12.25 | 642 S |
| 5.5 | 12,057 | 8.75 | 2,530 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 | Sep 16, 2025 | Aug 25, 2025 | — |
| 00 | Apr 17, 2013 | Dec 18, 2012 | Yes |
| 00 | Mar 15, 2013 | Apr 3, 2012 | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Dec 18, 2014. Resistivity. 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 |
|---|---|---|---|---|
| RESISTIVITYSpans Olmos, Eagle Ford | TIFF | 6,551 to 12,013 | Dec 18, 2014run Dec 19, 2011 | 1.00 |
"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 42-127-34403 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-127-34403 → 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/12734403, documented in the API reference.