HEFNER #8-12
API 3513726891 · Stephens County, Oklahoma
Injection
12 monthly filings with Oklahoma, Jan 2025 to Dec 2025.
| Month | Fluid injected (bbl) | Max pressure (psi) |
|---|---|---|
| Dec 2025 | 4,920 | 400 |
| Nov 2025 | 0 | 0 |
| Oct 2025 | 0 | 0 |
| Sep 2025 | 5,415 | 400 |
| Aug 2025 | 0 | 0 |
| Jul 2025 | 6,037 | 400 |
| Jun 2025 | 17,640 | 400 |
| May 2025 | 6,045 | 400 |
| Apr 2025 | 0 | 0 |
| Mar 2025 | 23,610 | 500 |
| Feb 2025 | 29,820 | 500 |
| Jan 2025 | 6,830 | 470 |
A dash is a month the well filed with no figure in that column.
Completion
Oklahoma files 1 completion report for this well.
Completion 0
STRAIGHT HOLEAC2RInInterval
| Formation | Produced | Perforated (ft) | Treatment |
|---|---|---|---|
| LOCO | INJ | 936–1,044 | Frac |
Casing
| String | Size (in) | Weight (lb/ft) | Grade | Set (ft) | Cement (sacks) |
|---|---|---|---|---|---|
| PRODUCTION | 4.5 | 10.5 | J-55 | 1,130 | 300 |
Drilling permit
Oklahoma files 1 application to drill this well, naming 1 target formation. A permit records what an operator asked to do, not what it did. A target formation is where the operator aimed, and the hole may have missed it, stopped short of it or never been drilled.
Filed 2012-03-15
WRADRStraight holeTarget formation
| Formation | Expected top (ft) |
|---|---|
| LOCO | 900 |
An expected top is the depth the operator predicted before drilling, on the application it filed with Oklahoma. It is not a measurement of where the formation was found.
Location
34.304597, -97.682667
Every well in Stephens County, Oklahoma
Oklahoma state record, from OK_wells_rbdms-wells.parquet. Corpus built 2026-09-11.