MARINE GEOLOGICAL EXPLORATION METHOD AND RESEARCH COMPLEX FOR ITS IMPLEMENTATION Russian patent published in 2015 - IPC G01V3/08 

FIELD: electricity.

SUBSTANCE: pulse electromagnetic field is excited in a medium in a sequential counterwise manner from two sides in respect to a probing zone. The following is measured: spatial differences of electric field potentials at the round profile of the generator-pickup cable streamer movement at its one-way movement along the profile and simultaneously at the pair sections of the profile which are symmetric in respect to the diameter passing through the centre of the generator line. The measurements are carried out by two measuring tripoles built-in in the streamer so that in the course of its circular movement the tripole centres are set at the profile in a diametrically opposite symmetric manner in respect to the generator line centre. Measurements at every pair exploration section are carried out firstly by one of the tripoles of the pair at one direction of the probing field and is repeated by the other tripole of the pair when it is in the same section but at the opposite field direction. One-sided and double-sided DNE-parameters are calculated on the basis of the potential difference measurements. Time sections of electrophysical parameters are drawn by the linear profiles formed by the combination of the probing results, at sequential round profiles, along and/or across the area of the object being explored.

EFFECT: higher productivity, efficiency and reliability of electric exploration works.

4 cl, 3 dwg