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1. (WO2018038735) COOLED SINGLE-PHOTON DETECTOR APPARATUS AND METHODS

Pub. No.:    WO/2018/038735    International Application No.:    PCT/US2016/048930
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Sat Aug 27 01:59:59 CEST 2016
IPC: E21B 47/00
G01V 8/02
E21B 47/01
Applicants: HALLIBURTON ENERGY SERVICES, INC.
Inventors: STARK, Daniel Joshua
MAIDA, John L.
BHONGALE, Satyan Gopal
BARFOOT, David Andrew
Title: COOLED SINGLE-PHOTON DETECTOR APPARATUS AND METHODS
Abstract:
In some embodiments, a method and apparatus, as well as an article, may operate to determine downhole properties based on detected optical signals. An optical detection apparatus can include an optical detector including a superconducting nanowire single photon detector (SNSPD) for detecting light received at an input section of fiber optic cable. The optical detection apparatus can further include a cryogenic cooler configured to maintain the temperature of a light-sensitive region of the SNSPD within a superconducting temperature range of the SNSPD. Downhole properties are measured based on detected optical signals received at the optical detection apparatus. Additional apparatus, systems, and methods are disclosed.