# DrNuc — Nuclear Petrophysical Calc.

> Nuclear petrophysical calculator for oil industry exploration and production. (iPhone/iPad app by Donald McKeon.)

- Source: https://appshunter.io/ios/app/drnuc/id1323124018 (this page in markdown: same URL + `.md`)
- Developer: [Donald McKeon](https://appshunter.io/developer/1323124017)
- Category: Business
- Price: $4.99
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 13.0 · 17 MB
- Languages: American English
- Released: 2022-04-10
- Data updated: 2026-06-13
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/drnuc/id1323124018/reviews.md

## What is DrNuc?

DrNuc is the Nuclear Petrophysical Calculator. This app calculates nuclear petrophysical properties used in the oil industry. DrNuc is designed to provide an accurate "first look" at nuclear logs in reservoir formations. This app is an important tool for understanding nuclear logs, for predicting the response of nuclear logging tools, and for planning nuclear logging programs. DrNuc has applications in oil exploration and production. DrNuc is designed for running on iPhones and can be used at well sites. It is stand-alone and does not require any connectivity. 

DrNuc calculates 6 petrophysical parameters used in the oil industry:
- rhoB : formation bulk density
- rhoe : electron density
- PEF : the photo-electric factor
- DPHI : the density porosity
- HI : the hydrogen index
- Sigma : the formation capture cross section

There are 6 calculators in the app customized for different applications: 
(1) clean sandstone, limestone or dolomite formation with water, oil, gas and/or CO2 in the pore volume;
(2) sandstone formations with the clays illite, kaolinite and smectite;
(3) petrophysical properties for complex lithologies and hydrocarbons;
(4) petrophysical parameters for a library of 100 minerals;
(5) properties of saline water at high pressure and temperature;
(6) petrophysical properties for rock assays or elemental analyses.

Disclaimer: The DrNuc app does not have anything to do with medicine or the medical industry. 

Users: The app can be used by all age groups, although most users will work in the oil & gas industry, mining industry or will be a college student studying geology, petroleum engineering, etc.

Please review the terms of the app's end user license agreement carefully before using the DrNuc app.

## Key features

- Calculates 6 key petrophysical parameters
- Supports various formation types and fluids
- Includes calculators for complex lithologies and minerals
- Properties of saline water at high pressure/temperature
- Stand-alone operation, no connectivity required
- Designed for iPhone, iPad, and iPod use


## Frequently asked questions about DrNuc

### What petrophysical parameters does DrNuc calculate?

DrNuc calculates six key petrophysical parameters: formation bulk density (rhoB), electron density (rhoe), photo-electric factor (PEF), density porosity (DPHI), hydrogen index (HI), and formation capture cross section (Sigma).

### What types of formations and fluids can DrNuc analyze?

DrNuc can analyze clean sandstone, limestone, or dolomite formations with water, oil, gas, and/or CO2. It also supports sandstone formations with clays like illite, kaolinite, and smectite.

### Does DrNuc require an internet connection to work?

No, DrNuc is designed to be a stand-alone application and does not require any connectivity to function. This makes it suitable for use at well sites where internet access may be limited.

### What is the price of DrNuc?

DrNuc is a paid application priced at $4.99. This one-time purchase grants access to all its features for calculating nuclear petrophysical properties.

### What devices is DrNuc compatible with?

DrNuc is compatible with iPhones, iPads, and iPods. It is designed to run on Apple's mobile operating systems.

### How often is DrNuc updated?

The latest version of DrNuc is 2.1, which was released on April 10, 2022. The provided data does not indicate the frequency of future updates.

### Is DrNuc suitable for beginners in the oil industry?

While DrNuc is a powerful tool for professionals, its detailed calculations and specific industry focus suggest it is most beneficial for those with some background in geology or petroleum engineering. College students studying these fields would also find it valuable.

### Does DrNuc have ads?

No, DrNuc does not contain advertisements. As a paid application, it offers an ad-free user experience.

## Version history (last 1 release)

### 2.1 — 2022-04-10

No release notes.

## Apps similar to DrNuc

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| [Infovisa Client Conference](https://appshunter.io/ios/app/infovisa-client-conference/id1580812080) | — | Free | Business |
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## More apps by Donald McKeon

- [EuchreMyDay!](https://appshunter.io/ios/app/euchremyday/id6451386838)

All apps by Donald McKeon: https://appshunter.io/developer/1323124017

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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 2026-06-13.*