---
title: Drilling Activity - Advanced Core Recovery Calculator
description: Advanced Core Recovery Calculator (ACRC) For Drilling Contractors who want advanced core calculations, the Advanced Core Recovery Calculator is an optional feature which allows for a shift from data c
---

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# Drilling Activity - Advanced Core Recovery Calculator

**Advanced Core Recovery Calculator (ACRC)**

For Drilling Contractors who want advanced core calculations, the Advanced Core Recovery Calculator is an optional feature which allows for a shift from data collection to calculation support.  
Available for Drill Types:

- - Surface - Coring
    - Underground - Coring
    - Sonic
    - Geotechnical

ACRC available in KruxLog allows users to: 

- - Set barrel constants for each drilling activity
    - Incorporate rod count
    - Automate String Length and Depth-To calculations

To enable ACRC, go the Presets--\>Report Setup in KruxMetrix so that it will be available in KruxLog within Drilling Activities of a DSR:  
![Presets Report Setup for ACRC](https://knowledgebase.kruxanalytics.com/hs-fs/hubfs/Presets%20Report%20Setup%20for%20ACRC.png?width=688&height=434&name=Presets%20Report%20Setup%20for%20ACRC.png)

 

Note: In KruxLog--\>Preferences, you can set the Unit of Measure (the default is metric) along with other settings.

![KruxLog Preferences](https://knowledgebase.kruxanalytics.com/hs-fs/hubfs/KruxLog%20Preferences.png?width=688&height=943&name=KruxLog%20Preferences.png)

 

A key component of ACRC is **Barrel Constants**:

![ACRC Barrel Constants more](https://knowledgebase.kruxanalytics.com/hs-fs/hubfs/ACRC%20Barrel%20Constants%20more.png?width=688&height=955&name=ACRC%20Barrel%20Constants%20more.png)

- - Core Barrel Size: industry standards
    - Second Barrel: associated second barrel sizes
    - Orientation Tool: industry standards
    - Orientation Extension for various sizes
    - Constant Stick Up: manual entry
    - Rod Length: industry standards
    - Barrel Length Calculation: calculated based on inputs  
      ![ACRC Barrel Constants modal](https://knowledgebase.kruxanalytics.com/hs-fs/hubfs/ACRC%20Barrel%20Constants%20modal.png?width=688&height=764&name=ACRC%20Barrel%20Constants%20modal.png)

After Barrel Constants have been entered, users may start adding Core Runs for that Drill Activity with "Add Core":

![ACRC Add Core](https://knowledgebase.kruxanalytics.com/hs-fs/hubfs/ACRC%20Add%20Core.png?width=688&height=775&name=ACRC%20Add%20Core.png)

Input core run data:

![ACRC Barrel Constants Add Core modal](https://knowledgebase.kruxanalytics.com/hs-fs/hubfs/ACRC%20Barrel%20Constants%20Add%20Core%20modal.png?width=688&height=1003&name=ACRC%20Barrel%20Constants%20Add%20Core%20modal.png)

1. Add Rods – Add/subtract rods or manually enter rods for that run
2. Total Rod Count – Cumulative rod count in the hole
3. Sub Length/Sub Description – Manual entry; Add sub length using consistent units. Input sub description as needed.
4. String Length– Automatic calculation of string length based on Barrel Constants, Rod Count and Sub
5. Stick Up – Manual entry of Stick Up for that run; add length using consistent units
6. Depth From – Auto-populated field informed by Activity Depth From, or the previous core run Depth To
7. Depth To – Calculated value based on String Length and Stick Up
8. Recovered – Manual entry field of Core Recovered; Core Loss and % Recovered calculated based on Total Drilled and Recovered values
9. Orientation – Yes/No dropdown to indicated whether orientation was successful

Barrel Constants and Core Run Data can be reviewed and edited within the Activity by expanding/collapsing the arrow or clicking the Edit icon:

![ACRC Barrel Constants expanded](https://knowledgebase.kruxanalytics.com/hs-fs/hubfs/ACRC%20Barrel%20Constants%20expanded.png?width=688&height=1020&name=ACRC%20Barrel%20Constants%20expanded.png)

![ACRC Barrel Constants - Core expanded](https://knowledgebase.kruxanalytics.com/hs-fs/hubfs/ACRC%20Barrel%20Constants%20-%20Core%20expanded.png?width=688&height=1036&name=ACRC%20Barrel%20Constants%20-%20Core%20expanded.png)

Note: Editing a Barrel Constant will result in updated calculations throughout the associated core runs for that activity 

 

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