WELL · 42-127-35201 · DISTRICT 1
Diamond H Ranch #12H
Dimmit County · Briscoe Ranch (Eagleford) field · Producing · Horizontal
Diamond H Ranch #12H (API 42-127-35201) is a horizontal well in Dimmit County operated by Javelin Energy Partners Mgmt LLC, completed July 17, 2013 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued December 5, 2012, permitted to 8,660 ft.
It was permitted by Anadarko E&P Company LP and has since transferred to Javelin Energy Partners Mgmt LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Olmos, San Miguel, Eagle Ford.
Its lease has reported 7.16M barrels of oil and 15.8M mcf of gas since June 2010, last reporting in July 2026. The lease carries 45 wells, so these are lease totals, not this well alone.
Operator of record
Javelin Energy Partners Mgmt LLC
Permitted by Anadarko E&P Company LP; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Jan 4, 2026 · 233 permits on file · (888) 973-7780
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 Company LPDec 5, 2012 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,660
- total depth, ft
- 1
- permits on file
- Dec 5, 2012
- last permit issued
- Jul 17, 2013
- completed
- 7.16M
- cumulative oil, bbl
- 15.8M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2010 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 17, 2013
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: 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; they carry 45 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Diamond H Ranch O-1-15205 | Briscoe Ranch (Eagleford) | Javelin Energy Partners Mgmt LLC | 45 | 7.16M | 15.8M | Jun 2010 – Jul 2026 |
Oil, barrels lease total
Last 12 months 483,836 · prior 12 745,684(-35%)
Gas, mcf lease total
Last 12 months 1,867,708 · prior 12 2,117,117(-12%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Anadarko E&P Company LPJun 2010 → 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 |
|---|---|---|---|---|---|---|
| 752341-99 | Drill | Anadarko E&P Company LP | Nov 29, 2012 | Dec 5, 2012 | Jan 1, 2013 | 8,660 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-15205 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 479 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Olmos | 4,820 | -4,341 |
| San Miguel | 5,708 | -5,229 |
| Eagle FordEAGLEFORD | 7,454 | -6,975 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,040 | 13,156 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,892 | 12.25 | 565 S |
| 5.5 | 13,260 | 8.5 | 2,010 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 | Dec 10, 2013 | Oct 1, 2013 | 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 42-127-35201 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-127-35201 → 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.
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/12735201, documented in the API reference.