Oilfield Drilling & Blast Calc

Mud weight to blast pattern in seconds — pro oilfield and mining calculators offline at the wellsite or mine bench. No ads, no subscription.

Oilfield Drilling & Blast Calc is a professional engineering calculator suite built for drilling rigs, mine benches, and quarry pits. Ten focused tools for mud engineers, drilling engineers, blast engineers, mining engineers, and field technicians — all running fully offline, so you get answers whether you are at a remote wellsite, a pit wall, or an underground heading with zero signal.

No ads. No subscriptions. No sign-up. Open the app and calculate.

WHAT'S INCLUDED:

Drilling & Completion

• Mud Weight Calculator (FREE): Convert mud weight across ppg, sg, and psi/ft, and check equivalent circulating density (ECD) for your well section.
• Casing Burst & Collapse: Estimate API casing burst and collapse ratings against working pressure and design factors.
• Drill String Weight: Compute drill pipe, HWDP, and collar hookload, buoyed weight, and air weight for trip planning.

Mining & Blasting

• Screen Size Selector (FREE): Pick the correct screen aperture and deck size for target particle cuts.
• Pit Slope Stability: Quick factor-of-safety check for open-pit slope angles and bench geometry.
• Blast Hole Pattern: Burden, spacing, stemming, and powder factor for surface blast design.
• Rock Density & Porosity: Bulk density, grain density, and porosity from lab or field samples.
• Mine Ventilation Airflow: Size airflow, velocity, and pressure drop for underground mine ventilation circuits.

Environmental & Flow

• Flow Weir Calculator: V-notch, rectangular, and Cipolletti weir discharge for field water measurement.
• Sludge Volume & Dewatering: Sludge volume index, solids balance, and dewatering estimates for pit and process water.

WHO IS IT FOR:

• Drilling engineers sizing casing and planning trips
• Mud engineers mixing and monitoring circulating systems
• Blast engineers laying out shot patterns and powder loads
• Mining engineers running pit and ventilation checks
• Quarry operators screening aggregate
• Field technicians and supervisors who need answers on the rig floor or bench

WHY OILFIELD & MINING PROS LOVE IT:

• Fully offline — works at the wellsite, underground, or deep in the pit with no cell service
• No ads and no subscription — pay once, own it
• API-aware and MSHA-aware inputs that match the units and conventions you already use on the job
• Professional accuracy with clear formulas, unit conversions, and sensible defaults
• Clean iPhone and iPad interface designed for gloves, hard hats, and bright sunlight

ONE-TIME UNLOCK: Upgrade to Pro for a single $19.99 USD payment (non-consumable, no subscription) to unlock all 8 Pro calculators plus reference tables. Buy once, use forever — on every iPhone and iPad signed in to your Apple ID.

From the rig floor to the quarry bench, Oilfield Drilling & Blast Calc keeps the numbers you need one tap away. Download now and put a full drilling and mining toolkit in your pocket.