| CPC E21B 49/08 (2013.01) [G01N 23/223 (2013.01); G01N 2223/303 (2013.01); G01N 2223/402 (2013.01); G01N 2223/616 (2013.01); G01N 2223/635 (2013.01)] | 23 Claims |

|
1. An apparatus, comprising:
a container, attached to a drill string or a downhole formation tester, wherein the container is located within a borehole;
a first fluid flow control device attached to the container to allow a target fluid to flow out of the container;
a radiant energy source, capable to generate an emission energy;
an energy detector, capable to detect the emission energy; and
a sheath at least in part positioned proximate the target fluid, wherein the sheath reduces high energy from outside of the container being detected within the container by the energy detector.
|