Island Unit 21
API 43047316280000 · Uintah County, Utah · NATURAL BUTTES field
Production
17 monthly filings with Utah, Jan 2025 to May 2026. Each product is in its own unit and the four are never added.
| Period | Oil (bbl) | Gas (MCF) | Water (bbl) | Days |
|---|---|---|---|---|
| May 2026 | 0 | 744 | 0 | 28 |
| Apr 2026 | 0 | 606 | 0 | 28 |
| Mar 2026 | 0 | 783 | 2 | 31 |
| Feb 2026 | 234 | 934 | 2 | 28 |
| Jan 2026 | 35 | 2,013 | 22 | 25 |
| Dec 2025 | 0 | 636 | 0 | 12 |
| Nov 2025 | 0 | 920 | 0 | 24 |
| Oct 2025 | 0 | 453 | 0 | 17 |
| Sep 2025 | 0 | 668 | 0 | 30 |
| Aug 2025 | 0 | 625 | 0 | 26 |
| Jul 2025 | 0 | 834 | 2 | 30 |
| Jun 2025 | 55 | 854 | 3 | 28 |
| May 2025 | 60 | 1,108 | 28 | 28 |
| Apr 2025 | 32 | 1,192 | 73 | 28 |
| Mar 2025 | 0 | 980 | 0 | 31 |
| Feb 2025 | 0 | 910 | 0 | 28 |
| Jan 2025 | 31 | 1,959 | 0 | 25 |
A dash is a period the well filed with no volume for that product. This corpus holds Utah’s series from 2025; the Division publishes earlier years in a separate set of files.
Work history
Utah files 1 record of work done on this well — each drill, plug, deepening, re-entry, re-perforation and recompletion, with the depths reached. One carries a production test the operator filed afterwards.
DRILL
VERTICALPGWProduction test
| Tested | Oil (bbl/d) | Gas (MCF/d) | Water (bbl/d) | Gravity (°API) | Shut-in (psi) | Choke |
|---|---|---|---|---|---|---|
| 1985-11-01 | 100 | 4,198 | 0 | — | — | — |
A production test is one measurement the operator made on one day and filed with Utah. It is not a monthly average and it does not describe how the well produced afterwards. The choke size is shown exactly as filed: Utah 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 Utah did not file, or one it filed outside any physically possible range.
Location
39.968344, -109.739021
Every well in Uintah County, Utah
Utah state record, from UT_wells_Wells.parquet. Corpus built 2026-09-11.