Performance results for scintillation detectors for high temperature environments including MWD

Author

Dayton, R. ; Mayhugh, M. ; Papp, M. ; Parkhurst, P. ; Schreiner, R.

Author_Institution

Bicron Corp., Newbury, OH, USA

Volume

35

Issue

1

fYear

1988

Firstpage

879

Lastpage

881

Abstract

Sheet reflectors and elastomeric potting materials have become available for packaging NaI(Tl) scintillation detectors. The problem of compatibility of these materials with NaI(Tl) in the high-temperature encountered in oil well applications is discussed. Specially treated systems that are compatible with NaI(Tl) to at least 200 degrees C are described. Their performance is as good as that of traditional packed-powder systems, with only a 5 to 10% pulse height drop during initial exposure to 180 degrees C. Additional data to 200 degrees C show similar stable results, indicating potential application in the harsh MWD (measurement-while-drilling) environment.<>

Keywords

geophysical equipment; packaging; scintillation counters; 180 degC; 200 degC; NaI:Tl; elastomeric potting materials; high temperature environments; measurement-while-drilling; oil well applications; scintillation detectors; sheet reflectors; Crystalline materials; Crystallization; Packaging; Powders; Scintillation counters; Sheet materials; Solid scintillation detectors; Stability; Temperature; Welding;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.12852

Filename

12852