Drill Core

Drill Core

Intact cylindrical shaped sample of rock obtained during drilling with a special coring bit. Although commonly narrow in diameter (e.g., 1-4″ or 25-100 mm), it preserves a geological record that makes it possible to interpret the sequence of mineral formation, fracturing, and vein filling.

Geothermal Glossary

Word of the Week – Zircon

Word of the Week – Zircon

Zircon Zirconium silicate (ZrSiO4) is a minor or accessory mineral in igneous and metamorphic rocks. It contains measurable albeit minor amounts of uranium and lead, which make it amenable for radiometric dating. Zircons are some of the oldest dated minerals on...

Word of the Week – Zonal Isolation

Word of the Week – Zonal Isolation

Zonal Isolation The process of operationally isolating specific intervals or zones along a wellbore to perform well intervention activities, such as stimulation.

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