FOUR SISTERS A #1-5
API 3500323288 · Alfalfa County, Oklahoma
Completion
Oklahoma files 1 completion report for this well. One carries a production test the operator filed.
Completion 0
STRAIGHT HOLEACOILInterval
| Formation | Produced | Perforated (ft) | Treatment |
|---|---|---|---|
| MISSISSIPPI | OIL | 4,915–5,080 | Acid, Frac |
Production test
| Tested | Oil (bbl/d) | Gas (MCF/d) | Water (bbl/d) | Gravity (°API) | Shut-in (psi) | Choke |
|---|---|---|---|---|---|---|
| 2017-12-28 | 6 | 10 | 300 | — | 0 | — |
A production test is one measurement the operator made on one day and filed with Oklahoma. It is not a monthly average and it does not describe how the well produced afterwards. The choke size is shown exactly as filed: Oklahoma records it in inches on some reports and in sixty-fourths of an inch on others, and names the unit on neither. A dash is a measurement Oklahoma did not file, or one it filed outside any physically possible range.
Casing
| String | Size (in) | Weight (lb/ft) | Grade | Set (ft) | Cement (sacks) |
|---|---|---|---|---|---|
| PRODUCTION | 5.5 | 16 | — | 5,847 | 300 |
| INTERMEDIATE | 8.625 | 23 | — | 1,110 | 450 |
| SURFACE | 13.375 | 48 | — | 320 | 350 |
Drilling permit
Oklahoma files 1 application to drill this well, naming 10 target formations. 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 2017-08-18
WRADRStraight holeTarget formations
| Formation | Expected top (ft) |
|---|---|
| DOUGLAS (TONKAWA UP) | 3,970 |
| TONKAWA | 4,190 |
| LANSING-KANSAS CITY | 4,430 |
| DES MOINES | 4,740 |
| MISSISSIPPI | 4,960 |
| MISENER | 5,400 |
| HUNTON | 5,410 |
| SYLVAN | 5,410 |
| VIOLA | 5,465 |
| SIMPSON | 5,555 |
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
36.937096, -98.515295
Every well in Alfalfa County, Oklahoma
Oklahoma state record, from OK_wells_rbdms-wells.parquet. Corpus built 2026-09-11.