Vibratory coring techniques are utilized for the acquisition of coarser, unconsolidated sediments or when longer cores are required.
OSI operates a wide variety of custom-made vibratory corers from small portable units to large pneumatic corers capable of acquiring core samples up to 40 feet in length. OSI’s corers can be utilized in both shallow water and offshore applications. The typical core rig is comprised of steel or aluminum core barrels that are 3″ or 4″ in diameter with varying lengths. Core barrels are most often fitted with a polycarbonate core liner, a cutter head, and a core catcher.
OSI’s coring rigs are deployed on numerous environmental and construction projects. Cores are analyzed for geological and geotechnical properties, and/or contaminants. Coring is also used as a tool for ground-truthing seismic reflection data supporting projects like sediment borrow area delineation and Confined Aquatic Disposal (CAD) capping programs.