WELL · 42-417-36440 · DISTRICT 7
Nail B-40 #4
Shackelford County · Shackelford County Regular field · Vertical
Nail B-40 #4 (API 42-417-36440) is a well in Shackelford County operated by Rampart Petroleum Incorporated, completed March 10, 1986.
The RRC has issued one drilling permit, issued July 30, 1985, permitted to 1,200 ft.
It was permitted by K J K Corp. and has since transferred to Rampart Petroleum Incorporated on the wellbore schedule.
Completion filings report 3 formation tops, including Tannehill, Saddle Creek, Saddlecreek Lime.
Its lease has reported 121K barrels of oil and 3.11K mcf of gas since January 1993, last reporting in July 2026. The lease carries 23 wells, so these are lease totals, not this well alone.
Operator of record
Rampart Petroleum Incorporated
Permitted by K J K Corp.; the EWA schedule now lists a different operator.
Buffalo Gap, TX · P-5 Y, filed Jun 8, 2012 · 43 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Rampart Petroleum Incorporated |
| Production reports | Daylight Petroleum LLCthrough Apr 2026 |
| Latest permit | K J K Corp.Jul 30, 1985 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 1,200
- total depth, ft
- 1
- permits on file
- Jul 30, 1985
- last permit issued
- Mar 10, 1986
- completed
- 121K
- cumulative oil, bbl
- 3.11K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Mar 10, 1986
- Shut in
- —
- Plugged
- —
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 23 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Nail 40 O-8-23159 | K W (Tannehill) | Daylight Petroleum LLC | 23 | 121K | 3.11K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 1,719 · prior 12 2,132(-19%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Wimsco, Inc.Jan 1993 → Apr 1994
- 2Paragon CorporationMay 1994 → Jun 1997
- 3L.C.S. Production CompanyJul 1997 → Feb 1998
- 4T-N-T Engineering, Inc.Mar 1998 → Jun 2016
- 5Avad Operating, LLCJul 2016 → Jul 2019
- 6Daylight Petroleum LLCAug 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 281326-99 | Drill | K J K Corp. | Feb 27, 1986 | Jul 30, 1985 | — | 1,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-8-23159 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,513 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| TannehillTANNEHILL SAND | 907 | 606 |
| Saddle CreekSADDLE CREEK LIME | 1,000 | 513 |
| Saddlecreek Lime | 1,000 | 513 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 907 | 913 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 4.5 | 1,004 | 6.75 | 175 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 | Aug 4, 1987 | Jul 15, 1987 | — |
| 00 | Jul 25, 1987 | — | — |
| 00 | Apr 2, 1986 | Mar 18, 1986 | Yes |
| 00 | Mar 26, 1986 | — | — |
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 42-417-36440 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-417-36440 → 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/41736440, documented in the API reference.