DRILL/CALC — Professional Drilling Fluids & Hydraulics Calculator

Built by drilling professionals, for drilling professionals. DRILL/CALC is the all-in-one field toolkit for mud engineers, drilling supervisors, fluid engineers, and oilfield consultants who need fast, accurate calculations on the rig.

━━━ CORE CALCULATORS ━━━

• Hydrostatic Pressure — HP = 0.052 × MW × TVD
• ECD (Equivalent Circulating Density)
• Kill Mud Weight (well control)
• Hole & Annulus Volume / Capacity
• String Displacement
• Mud Weight Mixing (barite, hematite)
• Vertical Depth (TVD) — Average, Balanced Tangential & Minimum Curvature methods
• Flow Rate & Pump Output (SPM-based)
• Hydraulics & Friction Pressure Loss — Bingham Plastic, Power Law & Herschel-Bulkley models
• Rheology Profile — full 3-model overlay with rheogram chart
• Universal Unit Converter — Pressure, Temperature, Mud Weight, Depth, Flow Rate, Volume, Density

━━━ BRINE CALCULATIONS ━━━

• NaCl, KCl, CaCl₂, CaBr₂, NaBr, ZnBr₂, CsHCO₂, KHCO₂
• CaBr₂ / CaCl₂ Mixing Tool (Baroid Table 3.16 procedure)
• Complete API Brine Reference Table with crystallization & freeze points

━━━ MICA AI ASSISTANT ━━━

Built-in AI assistant trained on drilling fluids and oilfield engineering. Ask questions in plain English, get instant expert answers — even offline thanks to a built-in knowledge base of 24 topics.

━━━ PDF REPORTS ━━━

Export professional PDF reports with all inputs, results, and graphs — ready to share with the company man, working team, or client. Includes full procedure steps for brine mixing.

━━━ KEY FEATURES ━━━

• Works in both Metric and Imperial units (auto-converts on the fly)
• Light and dark mode with frosted-glass UI
• Saves your last inputs on every calculator — no re-typing after restart
• Clean, fast, no-nonsense interface designed for the rig site
• No internet required for core calculators

━━━ WHO IT'S FOR ━━━

• Mud Engineers
• Drilling Supervisors / Company Men
• Fluid Engineers
• Drilling Consultants
• Petroleum Engineering students

━━━ DISCLAIMER ━━━

DRILL/CALC is an engineering aid. All results should be verified against rig-specific conditions and company procedures. The developer is not liable for operational decisions made based on app outputs.

Developed and maintained by Ojana DEV.

OJANA DEV

Additional Information