BOREHOLE GEOPHONE Russian patent published in 1995 - IPC

FIELD: seismic prospecting. SUBSTANCE: borehole geophone has at least two sealed containers pressed with drive against wall of borehole during seismic logging. Containers are fitted with three-component seismic converters. Seismic converters of one of components are oriented in parallel to longitudinal axis of case and are connected in series. Seismic converters of second component are oriented perpendicular to longitudinal axis of case and are connected in opposition. Seismic converters of third component are oriented in parallel to tangent line to point of pressing of container against wall of borehole and are connected in series. EFFECT: enhanced efficiency of seismic prospecting. 4 dwg