Observed arrival · 2026-11-15
DrillSolver’s rig-floor drilling calculator
An iPhone, iPad, and Mac calculator for drilling formulas and well-control kill sheets, designed to solve for any missing variable.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Drillers, drilling engineers, and wellsite supervisors
- Worth noticing
- Saved well values appear in blue with their age, distinguishing carried-forward inputs from numbers entered for the current calculation.
Field notes
The workflow starts with a formula, accepts known values in their selected units, and solves whichever field is left blank. The page says well-specific values can carry into later calculations, appear in blue, and show their age. Its examples include LOT/FIT test plotting and kill-sheet outputs such as pump strokes and a step-down schedule; the page explicitly leaves operational decisions to company well-control procedures.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue