TEXAS · WELLS · REAGAN COUNTY · API 42-383-37606 · DISTRICT 6E
Ricker Rupert P. -KO- #4
Reagan County · Spraberry (Trend Area) field · Producing · Vertical
- Fields on the latest permit · any of 2
- Red House (Strawn) · Spraberry (Trend Area)
- Not one formation; the well must be completed in one of them, and no target formation is stated.
Ricker Rupert P. -KO- #4 (API 42-383-37606) is a well in Reagan County operated by Diamondback E&P LLC, completed April 8, 2012 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued December 27, 2011, permitted to 9,950 ft.
It was permitted by Endeavor Energy Resources L.P. and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report one formation top, including Spraberry.
Its 2 leases have reported 667K barrels of oil and 5.76M mcf of gas since November 1995, last reporting volume in April 2026. The leases carry 51 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Endeavor Energy Resources L.P.; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- May 4, 2026
- Permits on file
- 5,251
- Phone
- (432) 221-7400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | Endeavor Energy Resources L.P.Dec 27, 2011 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,950
- total depth, ft
- 1
- permits on file
- Dec 27, 2011
- last permit issued
- Apr 8, 2012
- completed
- 667K
- cumulative oil, bbl
- 5.76M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 1995 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 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 2 leases this well is completed on; they carry 51 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Ricker, Rupert P., -KO- O-9-13942 | Spraberry (Trend Area) | Diamondback E&P LLC | 38 | 546K | 5.04M | Nov 1995 – Apr 2026 |
| Ricker "C"-Enron O-9-14167 | Spraberry (Trend Area) | Endeavor Energy Resources L.P. | 13 | 121K | 719K | Nov 1995 – Sep 2014 |
Gas, mcf lease total
Last 12 months 227,748 · prior 12 207,600(+10%)
Oil, barrels lease total
Last 12 months 17,600 · prior 12 20,036(-12%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1BHP Petroleum (Americas) Inc.Nov 1995 → Apr 1996
- 2Stephens, Autry C.Nov 1995 → Aug 2000
- 3Endeavor Energy Resources L.P.Sep 2000 → Dec 2024
- 4Diamondback E&P LLCJan 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 730501-99 | Drill | Endeavor Energy Resources L.P. | Dec 21, 2011 | Dec 27, 2011 | Jan 14, 2012 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 8, 2012 | Ricker Rupert P. -KO- O-9-13942 | Spraberry (Trend Area) | Diamondback E&P LLC | Producing | 9,950 |
| Apr 8, 2012 | Ricker C -Enron O-9-14167 | Spraberry (Trend Area) | Endeavor Energy Resources L.P. | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,663 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| SpraberrySPRABERRY (TREND AREA) | 6,025 | -3,362 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,854 | 9,835 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 655 | 11 | 360 S |
| 5.5 | 9,950 | 7.875 | 1,240 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 | Nov 18, 2014 | Sep 24, 2012 | Yes |
| 00 | Jul 9, 2013 | Sep 24, 2012 | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Feb 2, 2015. 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 POROSITYSpans Spraberry | TIFF | 4,000 to 9,909 | Feb 2, 2015run Feb 7, 2012 | 6.82 |
"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 42-383-37606 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-383-37606 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it. The University Lands library has no per-well link: then paste it into its 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/38337606, documented in the API reference.