brønnkjerner

Brønnkjerner, often translated as "well cores" or "borehole cores," are cylindrical samples of rock or sediment extracted from the subsurface during drilling operations. These cores are obtained by using a specialized tool called a core barrel, which is attached to the drill string. As the drill bit rotates, it cuts into the rock, and the core barrel collects a continuous section of the material penetrated.

The primary purpose of collecting brønnkjerner is to provide geologists and engineers with direct physical evidence of the subsurface strata. This allows for detailed examination and analysis of rock types, their physical properties, and their geological history. Brønnkjerner are invaluable for understanding geological formations, identifying potential mineral or hydrocarbon reserves, and assessing the suitability of subsurface conditions for construction or resource extraction.

Analysis of brønnkjerner can include visual inspection for lithology and sedimentary structures, microscopic examination of thin sections, and a range of laboratory tests. These tests may determine porosity, permeability, strength, chemical composition, and the presence of fossils or other indicators. The information gained from brønnkjerner is crucial for making informed decisions in fields such as petroleum exploration, mining, geotechnical engineering, and hydrogeology. The preservation and careful handling of brønnkjerner are essential to maintain the integrity of the samples for accurate scientific study.