Well 4310, EVELYNE, Upton County, Texas
API 46135942 — recorded on 1 lease.
Well API 46135942 is recorded on the EVELYNE lease in Upton County, Texas, operated by COG OPERATING LLC. The state files a total depth of 10,525 ft, a last completion filed Oct 31 2008 and 1 drilling permit. A plugging record was filed Feb 25 2026.
Leases
| Lease | Well no. | Operator | Field | Schedule |
|---|---|---|---|---|
| EVELYNE | 4310 | COG OPERATING LLC | SPRABERRY (TREND AREA) | On |
The hole
- Total depth
- 10,525 ft
- Casing strings
- 2
- Deepest casing
- 10,525 ft
- Survey
- CCSD&RGNG RR CO
- Abstract
- 32
- Block / section
- C / 43
- Plugging records
- 6
- Bottom hole location
- 31.42373, -102.01495
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 |
|---|---|---|---|---|---|
| 664141 | Jun 26 2008 | Drill | EVELYNEno. 4310 | 10,800 ft | Sep 22 2008 |
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.