CENTERING PRESSURE DEVICE FOR WELL INSTRUMENTS Russian patent published in 2004 - IPC

FIELD: equipment for seismic wave field recording in vertical and inclined wells, particularly probes.

SUBSTANCE: device has body, electric drive, movable rod, clamping lever and lead screw with flange arranged on support bearings between two supports. Pressing device comprises two sets of clamping levers with stay arms spaced along instrument body. Each lever of upper set is pivotally connected by one end thereof with movable rod and is pivotally supported by one end of corresponding stay arm of upper set. Another ends of above spacer arms are hinged to upper end of drawbar. Attached to lower end of drawbar are pressing levers of lower set, which are pivotally supported by corresponding stay arms. Opposite ends of these stay arms are pivotally attached to instrument body.

EFFECT: extended functional capabilities, possibility of receiving oscillations with constant azimuthal sensitivity transmitted from oscillation source point located far from heads of vertical and inclined wells.

1 dwg