# Directional Drilling — A Tool for Oil & Gas

> Oil and gas directional drilling planning and survey data analysis tool. (iPhone/iPad app by Carlos Moura.)

- Source: https://appshunter.io/ios/app/directional-drilling/id928989079 (this page in markdown: same URL + `.md`)
- Developer: [Carlos Moura](https://appshunter.io/developer/407501202)
- Category: Education, Productivity
- Price: $29.99
- Age rating: 4+
- Requires: iOS 12.0 · 21 MB
- Languages: American English
- Released: 2015-03-04
- Data updated: 2026-08-16
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/directional-drilling/id928989079/reviews.md

## What is Directional Drilling?

The Directional Drilling provides the useful tools for the drilling of oil wells with well planning, survey data, multilateral wells, plotting in vertical section, plan view and in X-Y-Z (3D), easy tools to create 2D wells and also to calculate 3D sections, calculations between two survey stations and formulas.

This app is designed for both iPhone and iPad. You can download it on your iPhone and also on your iPad.

The well planning and survey stations can also be imported from CSV text files, for example:
"MD","INC","AZI","TVD","N/S","E/W"
"1000.0","0.0","0.0","1000.0","0.0","0.0"
"1100.0","3.0","10.0"
"1200.0","6.0","15.0"
...
The values can be "quoted" or unquoted and separated by:
- Comma:       1.00,2.00,3.00
- Semicolon:   1.00;2.00;3.00  or  1,00;2,00;3,00
- Tab:              1.00   2.00   3.00   (TSV file)
- Space:          1.00 2.00 3.00

Please, before you buy, make sure this app will be useful to you. Visit our website at www.wellcontrol.com.br and check the "User Guide".

This app was developed based on existing spreadsheets. There is no comparison with any other software.

Our goal was to create a low-cost application with the help of experts to share with drilling engineers, technicians, drillers, students and teachers of drilling engineering. 

There is no intention to replace the professional softwares.

You can contribute with suggestions for improvements, correcting the translation to english, reporting bugs and spreading it to your friends.


Features: 

1. Well Planning with Multiple Sections (Minimum Curvature); 
2. Ability to work with data files; 
3. Directional Survey: Edit, Add, Insert and Remove Survey Data; 

4. Calculations Methods: 
    - Tangential 
    - Balanced Tangential 
    - Minimum Curvature  (default)
    - Radius of Curvature 
    - Angle Averaging 

5. Print Reports; 
6. Survey Data Calculations in 5 methods; 
7. Formulas of the Methods; 
8. Ability to work with length units: foot and meter (metre); 
9. Vertical Section View, Plan View and X-Y-Z plotting. 
10. Ability to Multilateral wells plotting limited to 6 wells. 
11. Easy tool to create 2D Wells (Type I, II and Horizontal).
12. Easy tool to calculate 3D sections on well planning.
13. Sharing data files via email, iCloud and iTunes.
14. Import Well Planning (MD,Inclination,Azimuth)  from CSV text format file;
15. Export Well Planning (MD,Inclination,Azimuth,Quadrant,TVD,HD,VSection,N/S,E/W,DLS,BUR,TRN) to CSV text format file;
16. Import Survey Data from CSV text format file;
17. Export Survey Table to CSV text format file;
18. Sharing data files with iPad, iPhone and iPod Touch via iCloud, iCloud Drive, AirDrop or email.
19. Well Planning Interpolations;
20. Ability to get a simulated survey (steps 10m, 30m, 100m or 100ft) from Well Planning interpolations;

User Guide: Download at http://www.wellcontrol.com.br

DISCLAIMER:

These tools & materials are provided 'as is' without warranties of any kind, express or implied.

Please verify the tools provided by this application by yourself before you use them. Ensure you understand the impact of using these tools.

Any use you choose to make of these tools & materials is undertaken by you entirely at you own risk.

## Key features

- Well planning with multiple sections
- Import/export survey data
- Multiple calculation methods
- 2D and 3D well plotting
- Support for length units (foot/meter)
- Multilateral well plotting

## Chart rankings

- #180 in Top Paid · Education (US App Store)

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/directional-drilling/id928989079/reviews.md

### 1/5 — Dir driller

*2015-04-15*

Ripoff!!..don't buy it

## Frequently asked questions about Directional Drilling

### What is Directional Drilling used for?

Directional Drilling is a tool designed for the planning and analysis of oil well drilling operations. It assists with well planning, managing survey data, and visualizing well paths in 2D and 3D.

### What devices does Directional Drilling support?

Directional Drilling is available for iPhone, iPad, and iPod Touch devices, allowing for versatile use across Apple's mobile ecosystem.

### Can I import data into Directional Drilling?

Yes, Directional Drilling allows you to import well planning and survey data from CSV text files. It supports various delimiters like commas, semicolons, tabs, and spaces.

### What calculation methods are available in Directional Drilling?

The app offers several calculation methods for survey data, including Tangential, Balanced Tangential, Minimum Curvature (default), Radius of Curvature, and Angle Averaging.

### How does Directional Drilling handle well plotting?

Directional Drilling provides plotting in vertical section, plan view, and X-Y-Z (3D). It also includes an easy tool to create 2D wells and calculate 3D sections on well planning.

### Is Directional Drilling suitable for beginners?

The app was developed with the goal of being a low-cost application to assist drilling engineers, technicians, drillers, students, and teachers. It aims to be a helpful tool for learning and practice.

### How often is Directional Drilling updated?

The latest version of Directional Drilling is 4.2, which was last updated on September 7, 2024. This indicates active development and regular updates.

### What is the price of Directional Drilling?

Directional Drilling is a paid application priced at $29.99. It is designed as a one-time purchase for access to its comprehensive features.

## Version history (last 5 releases)

### 4.2 — 2024-09-07

- improvements in editing 3D interpolation parameters.
- minor fixes

### 4.0 — 2023-03-06

- compatibility with new iOS versions
- added Dark Scren mode
- improved importing/exporting directional parameters by CSV Text format:
The well planning and survey stations can also be imported from CSV text files, for example:
"MD","INC","AZI","TVD","N/S","E/W"
"1000.0","0.0","0.0","1000.0","0.0","0.0"
"1100.0","3.0","10.0"
"1200.0","6.0","15.0"
...
The values can be "quoted" or unquoted and separated by:
- Comma:       1.00,2.00,3.00
- Semicolon:   1.00;2.00;3.00  or  1,00;2,00;3,00
- Tab:              1.00   2.00   3.00   (TSV file)
- Space:          1.00 2.00 3.00

### 3.1 — 2019-06-15

- Fixed sequence on exporting to CSV Text Format to: MD, INC, AZI, TVD, NS, EW,...
- Changed expression from "CSV Text" to "Import/Export" on views "Well Planning" and "Survey Stations"

### 3.0.1 — 2019-02-16

3.0:
   - added interface for iPhone XR and iPhone XS Max
   - added interface for iPad 11 inch and iPad 12.9 inch
   - minor fixes
3.0.1 
   - fixes an issue on iPhone X / XS (visual only).

### 3.0 — 2019-02-16

- added interface for iPhone XR and iPhone XS Max
- added interface for iPad 10.5 inch, iPad 11 inch and iPad 12.9 inch
- minor fixes

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## More apps by Carlos Moura

- [Drilling Hydraulics (Basic)](https://appshunter.io/ios/app/drilling-hydraulics-basic/id673992115)
- [Ton Miles Calculator](https://appshunter.io/ios/app/ton-miles-calculator/id965020659)
- [3D Interpolation](https://appshunter.io/ios/app/3d-interpolation/id1000298349)
- [Kick Game 2](https://appshunter.io/ios/app/kick-game-2/id1060736340)
- [Driller's Method](https://appshunter.io/ios/app/drillers-method/id1067011800)

All apps by Carlos Moura: https://appshunter.io/developer/407501202

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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 2026-08-16.*