MINI CORE IN DRILLING SAMPLES FOR HIGH RESOLUTION FORMATION EVALUATION ON DRILLING CUTTINGS SAMPLES

摘要

An apparatus and method for mini core in drilling samples accumulated in thecups bysample catcher. It allows the explorations to obtain high resolution formationevaluation ondrilling cuttings samples. The Mini Core apparatus consists of narrow tubularwith a piston orcap. The thin wall tubular is rotated and/or vibrated and pressed in to thecup with wetsample of drilling cuttings. The piston or cap is placed after the desireddepth of sample isreached and the vacuum is re-established. The core is pulled out from the cupand thenanalyzed within the tubular or squeezed out on a flat tray for horizontalanalysis. The microlayering can be visually separated, before they are mixed as in conventionalsample and theinformation is lost.