Systems and methods for downhole logging with enhanced sensitivity and azimuthal resolution

A downhole logging tool (200) includes a radiation generation source (206) operable to emit radiation into a formation (218) surrounding the tool (200), a radiation detector (208) fixed relative to the radiation generation source (206) and operable to detect backscattered radiation from the formatio...

Full description

Saved in:
Bibliographic Details
Main Authors Feyzi Inanc, Marc Ramirez
Format Patent
LanguageEnglish
Published 08.09.2021
Subjects
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
Online AccessGet full text

Cover

More Information
Summary:A downhole logging tool (200) includes a radiation generation source (206) operable to emit radiation into a formation (218) surrounding the tool (200), a radiation detector (208) fixed relative to the radiation generation source (206) and operable to detect backscattered radiation from the formation (218) surrounding the tool (200), and a sleeve (214) positioned around the radiation detector (208) to shield the radiation detector (208) from a first portion of the backscattered radiation. The sleeve (204) includes at least one aperture (212) for exposing the radiation detector (208) onto a second portion of the backscattered radiation, in which the second portion of the backscattered radiation emanates from an inspected region of the formation (218) facing the at least one aperture (212). A signal measured at the radiation detector (208) corresponds to the inspected region of the formation (218), and the position of the at least one aperture (212) is changeable with respect to the formation (218) to distinctly inspect different regions (504a-l) of the formation (218).
Bibliography:Application Number: GB20210005652