FIELD: oil and gas production.
SUBSTANCE: one-link probe is embedded into soil from bottomhole of well. The probe is equipped with a leading point on a lower end and a head on the upper end. The probe is embedded into soil with impacts onto the head of the probe by means of an impact mechanism installed in a guiding cavity in form of a screw pipe string. The string is equipped with a bore bit having a central orifice. A centring bar of the one-link probe is run through this orifice. The leading working point is secured on the centring bar. Upon having embedded the probe into soil at its working length, the impact mechanism is extracted from the cavity of the string by means of a cable and hoist. The screw string of pipes is lengthened with one link equal to length of probe embedding. Further, the screw string is additionally loaded at length of one link with rotation of the string by means of a spinner of the rig. The impact mechanism is lowered into the cavity of the screw string. The process of probe embedding is repeated. Also, results of probing are recorded with measuring instruments and are interpreted by known methods.
EFFECT: reduced labour input of procedure for impact probing from bottomhole of well and increased reliability of obtained information at accelerated mode of analysis of physic-mechanical properties of non-rock soil under field conditions.
2 cl, 4 dwg
