Direct Push Drilling
Direct push drilling does not involve a rotating drill string. Instead, the drill string cuts through material to create a borehole by pushing or hammering.
Direct push rigs are usually utilized only for drilling through shallow, unconsolidated soil materials and very soft rock. The speed and depth of penetration is largely dependent on the soil type, the size of the sampler, and the weight and power of the rig. The advantage of direct push drilling is that, in the right soil type, it can produce a large number of high quality samples in a timely and cost effective manner.