TEXAS · WELLS · MARTIN COUNTY · CITY NAIL LEASE · API 42-317-40848 · DISTRICT 7B
City Nail #1
Martin County · Spraberry (Trend Area) field · Producing · Vertical
- Fields on the latest permit · any of 5
- Betty Sue (Devonian) · Lowe (Atoka) · Petty 48 (Upper Strawn) · Rose Petal (Lower Miss.) · Spraberry (Trend Area)
- Not one formation; the well must be completed in one of them, and no target formation is stated.
City Nail #1 (API 42-317-40848) is a well in Martin County operated by Oxyrock Operating LLC, completed April 18, 2018 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued May 26, 2017, permitted to 11,881 ft.
It was permitted by Crownquest Operating, LLC and has since transferred to Oxyrock Operating LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Yates, Grayburg, San Andres, Spraberry.
Its lease has reported 60.6K barrels of oil and 149K mcf of gas since April 2018, last reporting volume in August 2026.
Operator of record
Permitted by Crownquest Operating, LLC; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Apr 22, 2026
- Permits on file
- 394
- Phone
- (713) 215-7000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Oxyrock Operating LLC |
| Production reports | Oxyrock Operating, LLCthrough Aug 2026 |
| Latest permit | Crownquest Operating, LLCMay 26, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,881
- total depth, ft
- 2
- permits on file
- May 26, 2017
- last permit issued
- Apr 18, 2018
- completed
- 60.6K
- cumulative oil, bbl
- 149K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · APR 2018 THROUGH AUG 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 18, 2018
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
Surface location
32.109813, -102.084995 NAD27, as filed
32.109933, -102.085413 WGS84
Permit surface location from the RRC GIS record, referenced to NAD27 as the RRC files it; the WGS84 pair is the same point through NOAA's NADCON grid, and the map link uses it, in Martin County.
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
Texas locations come from drilling permits, so most older Texas wells have none and are not listed.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH AUG 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 |
|---|---|---|---|---|---|---|
| City Nail O-10-51179 | Spraberry (Trend Area) | Oxyrock Operating, LLC | 1 | 60.6K | 149K | Apr 2018 – Aug 2026 |
Oil, barrels lease total
Last 12 months 2,536 · prior 12 3,675(-31%)
Gas, mcf lease total
Last 12 months 7,224 · prior 12 11,317(-36%)
Wells named City Nail
Oxyrock Operating LLC's other wells filed under this lease name in Martin County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain of custody
Operator on the lease's P-4
Each operator named on the P-4 filings for this well's lease (a gas well is its own lease), from the date its filing took effect. The P-4 is filed by lease, so a date before the well was drilled is the lease's.
| Operator | From | To |
|---|---|---|
| Oxyrock Operating, LLC | Aug 1, 2024 | today |
| Crownquest Operating, LLC | Apr 18, 2018 | Aug 1, 2024 |
Reporting production
Every operator that reported production on this well's lease, in order.
- 1Crownquest Operating, LLCApr 2018 → Jul 2024
- 2Oxyrock Operating, LLCAug 2024 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 826706-98 | Drill | Crownquest Operating, LLC | Jul 6, 2017 | May 26, 2017 | Mar 4, 2018 | 12,000 |
| 826706-99 | Drill | Crownquest Operating, LLC | May 15, 2017 | May 26, 2017 | Mar 3, 2018 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 18, 2018 | City Nail O-10-51179 | Spraberry (Trend Area) | Oxyrock Operating LLC | Producing | 11,881 |
Formation tops
As filed on W-2/G-1. Subsea from 2,842 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,751 | 91 |
| Grayburg | 4,572 | -1,730 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H | 4,769 | -1,927 |
| Spraberry | 7,819 | -4,977 |
| Dean | 9,103 | -6,261 |
| Wolfcamp | 9,343 | -6,501 |
| Atoka | 11,077 | -8,235 |
| Cisco | — | — |
| Queen | — | — |
| Santa Rosa | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,366 | 11,788 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 335 | 17.5 | 375 S |
| 8.625 | 5,321 | 11 | 1,080 S |
| 5.5 | 11,874 | 7.875 | 700 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 | Mar 25, 2019 | Feb 19, 2019 | Yes |
Well logs
1 log loaded from the RRC's log index, 1 of it with a digital LAS file, the latest received Mar 15, 2021. Neutron.
Click a log to get its files from the RRC (free account). It opens in a new tab on the RRC's log search for this well, which lists each file to view or download; the RRC has no address for a single file.
| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| NeutronSpans Yates, Grayburg, San Andres, Spraberry, Dean, Wolfcamp, Atoka | LAS + TIFF | 0 to 11,829 | Mar 15, 2021 | 1.38 + 18.1 |
"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.
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.
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 42-317-40848 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-40848 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbors, subsea-aligned so they line up regardless of surface terrain.
Open the cross-section →Nail-Tillman E1F42-317-46696
0.8 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,314 | 1,547 |
| Yates | 2,851 | 10 |
| Queen | 3,834 | -973 |
| Grayburg | 4,320 | -1,459 |
| San Andres | 4,534 | -1,673 |
| Clear Fork | 6,824 | -3,963 |
| Spraberry | 7,831 | -4,970 |
| Dean | — |
11 TOPS · FIRST 8
Nail-Tillman E1D42-317-46698
0.8 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,314 | 1,547 |
| Yates | 2,857 | 4 |
| Queen | 3,830 | -969 |
| Grayburg | 4,312 | -1,451 |
| San Andres | 4,527 | -1,666 |
| Clear Fork | 6,830 | -3,969 |
| Spraberry | 7,846 | -4,985 |
| Dean | 9,123 | -6,262 |
10 TOPS · FIRST 8
Nail-Tillman E1C42-317-46699
0.8 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,314 | 1,547 |
| Yates | 2,857 | 4 |
| Queen | 3,819 | -958 |
| Grayburg | 4,321 | -1,460 |
| San Andres | 4,517 | -1,656 |
| Clear Fork | 6,824 | -3,963 |
| Spraberry | 7,837 | -4,976 |
| Cisco | — |
11 TOPS · FIRST 8
Nail-Tillman E1B42-317-46700
0.8 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,314 | 1,547 |
| Yates | 2,860 | 1 |
| Queen | 3,837 | -976 |
| Grayburg | 4,325 | -1,464 |
| San Andres | 4,534 | -1,673 |
| Clear Fork | 6,823 | -3,962 |
| Spraberry | 7,837 | -4,976 |
| Cisco | — |
11 TOPS · FIRST 8
Nail-Tillman E1A42-317-46778
0.8 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,314 | 1,547 |
| Yates | 2,855 | 6 |
| Queen | 3,832 | -971 |
| Grayburg | 4,319 | -1,458 |
| San Andres | 4,531 | -1,670 |
| Spraberry | 7,839 | -4,978 |
| Dean | — | |
| Cisco | — |
10 TOPS · FIRST 8
Nail-Tillman E1K42-317-46691
0.9 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,315 | 1,547 |
| Yates | 2,851 | 11 |
| Queen | 3,828 | -966 |
| Grayburg | 4,320 | -1,458 |
| San Andres | 4,536 | -1,674 |
| Clear Fork | 6,830 | -3,968 |
| Spraberry | 7,839 | -4,977 |
| Dean | 9,114 | -6,252 |
11 TOPS · FIRST 8
Nail-Tillman E1J42-317-46692
0.9 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,315 | 1,547 |
| Yates | 2,851 | 11 |
| Queen | 3,820 | -958 |
| Grayburg | 4,326 | -1,464 |
| San Andres | 4,539 | -1,677 |
| Clear Fork | 6,818 | -3,956 |
| Spraberry | 7,845 | -4,983 |
| Dean | — |
11 TOPS · FIRST 8
Nail-Tillman E1I42-317-46693
0.9 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,315 | 1,547 |
| Yates | 2,852 | 10 |
| Queen | 3,818 | -956 |
| Grayburg | 4,329 | -1,467 |
| San Andres | 4,549 | -1,687 |
| Clear Fork | 6,815 | -3,953 |
| Spraberry | 7,847 | -4,985 |
| Dean | 9,128 | -6,266 |
11 TOPS · FIRST 8
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/31740848, documented in the API reference.