JAMSTEC

Center for Deep Earth Exploration (CDEX)

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Improving Coring Samples

CDEX/JAMSTEC checks the recovery and quality of all core samples collected by D/V Chikyu. A medical-grade X-ray CT scanner aboard ship allows scientists to quickly identify and preserve important geological structures for later analysis.

It is CDEX/JAMSTEC policy to continuously improve both core recovery and quality through the development of new sampling tools and techniques. This includes careful analysis of drilling parameters and suggestions for new procedures during coring operations.

Objectives

CT images showing cracks in the core samples.

CT images showing cracks in the core samples.

Comparison of the core quality (good)

Comparison of the core quality
(good)

Comparison of the core quality (not good)

Comparison of the core quality
(not good)

  • Analytical results of a drilling parameter and core recovery.

    Analytical results of a drilling parameter and core recovery.

  • A core bit developed to improve core recovery in sediment layers.
  • A core bit developed to improve core recovery in sediment layers.

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