# Oilfield Drilling & Blast Calc — Drilling & Blast Calc Suite

> Drilling & Blast Calc Suite (iPhone/iPad app by Shanghai Sheyuan Network Technology Co., Ltd..)

- Source: https://appshunter.io/ios/app/oilfield-drilling-and-blast-calc/id6762048533 (this page in markdown: same URL + `.md`)
- Developer: [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-04-15
- Data updated: 2026-09-03
- User reviews in markdown: https://appshunter.io/ios/app/oilfield-drilling-and-blast-calc/id6762048533/reviews.md

## What is Oilfield Drilling & Blast Calc?

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.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock All Calculators | $12.99 | one-time |



## Version history (last 5 releases)

### 1.0.8 — 2026-07-01

Performance and reliability improvements.

### 1.0.7 — 2026-06-11

Pro unlock is now a one-time $12.99. Performance and stability improvements.

### 1.0.5 — 2026-05-08

Bug fixes and performance improvements.

### 1.0.4 — 2026-05-01

Bug fixes and performance improvements.

### 1.0.3 — 2026-04-29

Bug fixes and performance improvements.

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All apps by Shanghai Sheyuan Network Technology Co., Ltd.: https://appshunter.io/developer/1560626858

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*