High temperature downhole tool

Details High temperature downhole tool High temperature downhole tool

2007-08-13

2009-12-29

Porta, David P (Department: 2884)

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

Reexamination Certificate

active

07638761

ABSTRACT:
Apparatus and method for estimating a downhole parameter include a high-gain semiconductor device having a plurality of semiconductor layers forming an active region, the active region having a bandgap offset that provides device operation through at least the temperature environment of a downhole location, the high-gain semiconductor device being used at least in part to estimate a downhole parameter.

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