Abstract: A core sampler that complies with European Standard BS EN ISO 22457-1 and takes Class 1 samples, while being able to withstand forces associated with sonic drilling. The core sampler includes a smaller diameter, thin-walled sampler shoe portion that transitions to a larger diameter, thick-walled tube at a specific distance along the longitudinal axis of the core sampler. The smaller diameter shoe portion allows for an undisturbed sample, while the larger diameter tube imparts sufficient strength to the core sampler such that the core sampler can handle forces associated with sonic drilling techniques. Optionally, the larger diameter tube can provide the thickness needed for a liner.

Abstract: The grouting apparatus includes a tubular body, an outer end closure removably mounted to the outer end of the tubular body and a nozzle mounted to the inner end of the tubular body to form a container for grouting material. The tubular body has a landing shoulder seatable on a drill string landing shoulder. The closure includes an overshot coupling member and a head having an inlet passage opening to the tubular body. A piston and a sleeve are axially movable in the tubular body to force the grouting material out of the container, the sleeve blocking flow through the piston as the piston moves inwardly, but after abutting against the nozzle, opening a bypass channel from outwardly of the piston, through the piston and to the nozzle tube. Upon the sleeve moving inwardly relative to the piston, the fluid outwardly of the container may be pumped through the container to mix with the grouting material that was dispensed into the container prior to the container being inserted into the drill string.