Single Sensor for Detecting Neutrons and Gamma Rays

摘要

A logging system for imaging a subterranean formation that includes radiation sources that emit different energy levels of radiation into the formation. The radiation scatters from the formation and is sensed by a single sensor that is responsive to the different energy levels of radiation. The single sensor includes a crystal which includes cesium, lithium, yttrium, cerium, and chlorine. The radiation sources emit neutron rays and gamma rays.

主权项

1. A logging tool for imaging a subterranean formation comprising:
a source of neutrons that selectively emits neutrons into the formation that scatter from the formation; a sensor that is selectively disposed in a wellbore that intersects the formation and that comprises,
a crystal having cesium, lithium, yttrium, cerium, and chlorine, and that is spaced away from the source of neutrons, so that when the neutrons are emitted into the formation, the sensor is in the path of the scattered neutrons and senses the scattered neutrons.