Field tool · rig diesel
See where your rig diesel went, period by period
Enter delivery tickets, tank gauges and generator meters. Get the unaccounted volume for each gauge-to-gauge period, a running total and its cost at your own price.
Buy Now, $19One identity, printed on every page
Unaccounted volume = opening stock + deliveries - burn - closing stock. A negative value means more fuel is on hand than your entries account for.
Your tickets, gauges and meters
Type rows or add CSV files from the morning report. Fuel meters, hour meters at your own rate per hour, and counters that roll over at a value you set.
Your own strapping chart
Type each tank's chart once. Levels are read through it, and the page keeps it in your browser for next time. No built-in tank tables.
gal, bbl or litres
Switch the display unit and every figure, total and download follows. Cost uses the price you type, per gal, bbl or L.
Works on the rig
Runs in your browser with nothing uploaded. Install it on a phone or laptop and it opens with no signal.
Sample figures from the built-in example (gal):
| Period | Opening | Deliveries | Burn | Closing | Unaccounted | Running |
|---|---|---|---|---|---|---|
| Oct 1 to Oct 2 | 6,250.0 | 4,000.0 | 1,920.0 | 8,290.0 | 40.0 | 40.0 |
| Oct 2 to Oct 3 | 8,290.0 | 0.0 | 1,880.0 | 6,390.0 | 20.0 | 60.0 |
| Oct 3 to Oct 5 (joined) | 6,390.0 | 3,000.0 | 3,880.0 | 5,450.0 | 60.0 | 120.0 |
| Oct 5 to Oct 6 | 5,450.0 | 3,990.0 | 1,900.0 | 7,570.0 | -30.0 | 90.0 |
| Oct 6 to Oct 7 | 7,570.0 | 0.0 | 0.0 | 7,560.0 | 10.0 | 100.0 |
How periods are built
A period runs from one gauge time to the next, where every tank and every meter has a reading at that same minute. When a tank or meter has no reading at a time, the periods either side are joined into one, and nothing is estimated for the gap. Readings a few minutes apart (06:00 and 06:10) are not matched in this version. A delivery logged at exactly a gauge time counts in the period that starts at that time. Tanks are added together.
If you set your band, each period shows inside your band or outside your band against the number you typed. That is all it does.
From Oil Rigs Now: tools for rig managers, company men, toolpushers and the field accountants who balance the numbers after them.
$19 one-time
- Delivery tickets, tank gauges, strapping tables and burn meters
- Unaccounted volume per period, running total and cost at your price
- Periods CSV, tickets CSV and a JSON backup you can restore
- Light and dark themes
- Offline use, installable on phone or desktop
No refunds. All sales are final.