WELL · 42-317-34544 · DISTRICT 8
Knox #1
Martin County · Spraberry (Trend Area) field · Vertical
Knox #1 (API 42-317-34544) is a plugged well in Martin County, plugged April 16, 2020, last operated by Diamondback E&P LLC.
The RRC has issued one drilling permit (amended once), issued March 14, 2005, permitted to 10,883 ft.
It was permitted by Terrace Petroleum Corporation and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 4 formation tops, including Spraberry, Lwr Spraberry, Jo Mill, Wolfcamp.
Its lease has reported 85.2K barrels of oil and 77.8K mcf of gas since June 2005, last reporting in July 2021. The lease carries 5 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Terrace Petroleum Corporation; 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
- 5,237
- Phone
- (432) 221-7400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | Guidon Energy Mgmt Services LLCthrough Oct 2019 |
| Latest permit | Terrace Petroleum CorporationMar 14, 2005 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,883
- total depth, ft
- 2
- permits on file
- Mar 14, 2005
- last permit issued
- Jun 4, 2005
- completed
- 85.2K
- cumulative oil, bbl
- 77.8K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2005 THROUGH Jul 2021
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jun 4, 2005
- Shut in
- —
- Plugged
- Apr 16, 2020
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 5 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Knox O-10-37546 | Spraberry (Trend Area) | Diamondback E&P LLC | 5 | 85.2K | 77.8K | Jun 2005 – Jul 2021 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Terrace Petroleum CorporationJun 2005 → Sep 2005
- 2LCX Energy, LLCOct 2005 → Sep 2009
- 3Endeavor Energy Resources L.P.Oct 2009 → Sep 2016
- 4Guidon Energy Mgmt Services LLCOct 2016 → Oct 2019
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 558659-98 | Drill | Terrace Petroleum Corporation | Aug 3, 2005 | Mar 14, 2005 | Apr 14, 2005 | 10,883 |
| 558659-99 | Drill | Terrace Petroleum Corporation | Mar 7, 2005 | Mar 14, 2005 | Apr 14, 2005 | 10,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-37546 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,889 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,955 | 9,911 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 12.75 | 376 | 17.5 | 335 S |
| 8.625 | 4,442 | 11 | 400 S |
| 4.5 | 10,883 | 7.875 | 1,500 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 | Nov 18, 2005 | Jun 28, 2005 | Yes |
| 00 | Aug 29, 2005 | — | — |
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 42-317-34544 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-34544 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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/31734544, documented in the API reference.