ПОЛУПРОВОДЯЩАЯ ОБОЛОЧКА ДЛЯ ИСТОЧНИКОВ И ДАТЧИКОВ

摘要

A composite shell adapted to cover a source or sensor, particularly for subsurface applications. The shell provides transparency to the passage of signals to or from the source or sensor. The shell is adapted with a uniform semi-conductive surface providing a path for electric currents flowing within a subsurface borehole to short near the source or sensor.