# Drill Collar

> Drill Collar (iPhone/iPad app by zhandos uakanov.)

- Source: https://appshunter.io/ios/app/drill-collar/id1292363783 (this page in markdown: same URL + `.md`)
- Developer: [zhandos uakanov](https://appshunter.io/developer/625286817)
- Category: Reference, Education
- Price: $0.99
- Age rating: 4+
- Requires: iOS 16.4 · 1 MB
- Languages: American English
- Released: 2017-10-04
- Data updated: 2026-06-04
- User reviews in markdown: https://appshunter.io/ios/app/drill-collar/id1292363783/reviews.md

## What is Drill Collar?

Drill Collar app is database of Ideal Drill Collar Range.

When select Open Hole Size, the app will show below data:
- CASING SIZE TO BE RUN, inch
- IDEIAL DRILL COLLAR RANGE, inch
- API DRILL COLLAR SIZES WHICH FALL IN THE IDEAL RANGE, inch

The minimum size drill-collar is calculated from the Lubinski and Hock equation.

Easy. Simple. Useful.

Work Safe!


## Version history (last 3 releases)

### 1.2 — 2023-08-31

the app data was updated as per last Drill Collar database.

### 1.1 — 2020-02-16

-Bug fixed;

### 1.0 — 2017-10-04

No release notes.

## Apps similar to Drill Collar

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Quail Tools](https://appshunter.io/ios/app/quail-tools/id1279372123) | 5.0 (22) | Free | Reference |

## More apps by zhandos uakanov

- [OilField Formulas iHandy Calc](https://appshunter.io/ios/app/oilfield-formulas-ihandy-calc/id875486327)
- [OilField Downhole Tools](https://appshunter.io/ios/app/oilfield-downhole-tools/id878961481)
- [Directional Drilling Calc.](https://appshunter.io/ios/app/directional-drilling-calc/id885580803)
- [Shift Calendar for Oilfield](https://appshunter.io/ios/app/shift-calendar-for-oilfield/id894353734)
- [OilField iHandbook](https://appshunter.io/ios/app/oilfield-ihandbook/id916850671)
- [OilField Annular Volume Pro](https://appshunter.io/ios/app/oilfield-annular-volume-pro/id921257545)

All apps by zhandos uakanov: https://appshunter.io/developer/625286817

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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 2026-06-04.*