How to Effectively Preserve Drill Cores

In any exploration project, drill samples provide valuable information about the characteristics of the subsurface. However, if they are not properly preserved from the moment they are extracted, they may undergo changes that affect the quality of subsequent analyses.

For this reason, it is important to know how to preserve drill samples through proper identification, storage, and protection from external factors.

Why is it important to properly preserve drill cuttings?

Samples obtained during drilling help determine the characteristics of the subsurface and support decision-making throughout the project.

Among their main benefits are:

  • Maintaining the quality of geological logs.
  • Facilitating the traceability of each log.
  • Reducing errors during subsequent analysis.
  • Preventing the loss or contamination of collected material.

Main risks that can affect drilling samples

During fieldwork, various factors can alter the original conditions of the extracted samples, such as:

  • Prolonged exposure to the sun.
  • Moisture or direct contact with rain.
  • Accidental mixing of samples from different depths.
  • Loss of labels or records.
  • Impacts and damage during transport.

How to preserve drill samples on-site?

1. Identify and record correctly.

The identification must be carried out immediately after extraction. Recording data such as depth, location, and date helps maintain proper control and avoids confusion during analysis.

2. Use appropriate storage systems.

The samples must be kept organized according to the drilling sequence. The sample trays facilitate this task by allowing for clear organization and reducing the risk of loss or mixing of material.

3. Protect the samples from environmental conditions.

Continuous exposure to the sun, humidity, or rain can alter certain characteristics of the collected samples. Therefore, it is recommended to store it in protected spaces whenever possible.

4. Handle and transport the samples with care.

Improper handling can cause fractures, material loss, or alterations in the order of the records. During transport, it is important to maintain the stability of the samples and ensure that the labels remain legible.

Best practices for maintaining sample integrity

In addition to protecting samples from external factors, it is recommended to conduct periodic checks to verify that the samples remain in their original condition and that the recorded information remains legible.

According to the guide Recommendations for Soil Sampling by Alliance Bioversity International and CIAT, proper identification from collection through analysis helps reduce errors and facilitates the traceability of each sample. Additionally, maintaining the order of extraction facilitates the review and comparison of samples when necessary.

The importance of proper preservation

Knowing how to preserve core samples helps maintain the quality of data collected in the field and reduce potential errors during analysis. 

Practices such as proper identification, organized storage, and careful handling help maintain the material’s original characteristics, leading to more reliable results in exploration projects.

At Coreplast, we develop core sample trays designed to facilitate the organization, identification, and safekeeping of samples during exploration work.

Contact us and find the solution that best suits your project’s needs!

FAQs

How should drilling samples be properly stored?

To store drilling samples properly, it is important to label them immediately upon extraction, organize them according to the depth at which they were obtained, and protect them from factors such as humidity, rain, or prolonged exposure to sunlight.

What can damage core samples in the field?

Samples can be affected by impacts during transport, loss of labels, mixing of cores from different depths, or environmental conditions that alter their original characteristics.

Why is it important to preserve drill core samples?

Proper preservation helps maintain the quality of data obtained during exploration, reducing the risk of errors in subsequent analyses.

What role do sample trays play in sample preservation?

Sample trays help organize and protect samples during storage and transport, facilitating their identification within the exploration project.

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