Well 511H, NAIL-TILLMAN E1K, Martin County, Texas
API 31746691 — recorded on 1 lease.
Well API 31746691 is recorded on the NAIL-TILLMAN E1K lease in Martin County, Texas, operated by PIONEER NATURAL RES. USA, INC.. The state files a total depth of 9,459 ft, a last completion filed Dec 9 2025, 1 drilling permit and 1 hydraulic fracturing disclosure. The state holds no plugging record for it.
Leases
| Lease | Well no. | Operator | Field | Schedule |
|---|---|---|---|---|
| NAIL-TILLMAN E1K | 511H | PIONEER NATURAL RES. USA, INC. | SPRABERRY (TREND AREA) | Off |
The hole
- Total depth
- 9,459 ft
- Casing strings
- 3
- Deepest casing
- 28,189 ft
- Survey
- T&P RR CO
- Abstract
- 314
- Block / section
- 39 T1S / 1
- Plugging records
- not filed
- Bottom hole location
- 32.05579, -102.06852
Drilling permits
From the Railroad Commission's drilling permit master — the application record, not a record of drilling. A permit is an application the Commission filed and numbered; the spud date is the only field here that says a hole was started. This file carries no approval status, so none is shown.
| Permit | Issued | Type | Lease | Depth | Spud |
|---|---|---|---|---|---|
| 9063162 records | Mar 7 2025 | Drillhorizontal | NAIL-TILLMAN E1Kno. 511H | 10,552 ft | Nov 3 2025 |
What the lease produced
Texas reports oil and gas by lease, never by wellbore, so this is the whole lease. Values are volume multiplied by the published monthly price, the same arithmetic the lease page shows in full.
Hydraulic fracturing
Disclosed to FracFocus, the registry Texas designates by statute (Natural Resources Code §91.851; 16 TAC §3.29). FracFocus is run by the Ground Water Protection Council and the Interstate Oil and Gas Compact Commission, not by a state agency — but the filing itself is required by Texas rule.