English to Spanish Tech/Engineering Petroleum Eng/Sci well logging

El glosario de Schlumberger lo define así:

A device that helps to keep a wireline logging tool away from the center of the borehole. Typical devices are a single bow spring mounted on the outside surface of the logging tool or a set of rubber fingers mounted at the bottom. Some measurements, such as induction logs, respond better when the tool is eccentralized, while others, including acoustic logs, are better when centralized.