Western Atlas International, Inc.

Roger M Logan

James A Sackett

This invention provides a stabilizer for a geophone which reduces the amount of movement of the geophone after deployment in a marine environment subjected to water currents or turbulence. The stabilizer consists of a bulb-shaped body with fin-shaped lobes. An axial cavity for receiving the geophone housing containing the geophone is located at one end of the stabilizer. The other end terminates in a tail designed to promote laminar flow and reduce turbulence coming off the geophone housing and stabilizer. When the geophone is deployed, the stabilizer and attached geophone housing come to rest on a stable, 3-prong base comprised of two adjacent lobes of the stabilizer and the end of the geophone housing opposite the end inserted into the stabilizer.

Stabilizer for geophone

A spring for a seismometer for suspending one body relative to a fixed reference point within a housing including an outer ring and an inner ring interconnected by a plurality of arcuate legs. Each leg has an inner and an outer edge which may be defined by a plurality of arcs of different radii and distinct centers. The plurality of arcs further divide each leg into an inner section and an outer section of approximately equal length, and a middle section of substantially constant width and thickness. The spring provides an improved spurious resonance over the prior art springs as well as having an improved useful life.

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Houston, TX, United States of America

Roger M Logan