GAMMA RAY MEASUREMENT OF EARTH FORMATION PROPERTIES USING A POSITION SENSITIVE SCINTILLATION DETECTOR

摘要

GAMMA RAY MEASUREMENT OF EARTH FORMATIONPROPERTIES USING A POSITION SENSITIVESCINTILLATION DETECTOR(Docket No. WPC-99)ABSTRACT OF THE DISCLOSUREA well logging system for measuring the radialdensity distribution of earth formations in the vici-nity of a well borehole is provided. The systemutilizes a single position sensitive gamma ray de-tector capable of deriving formation bulk densityusing the gamma-gamma scattering technique a differentradial distance from the well borehole.