Patent ID: 9057669
Filing Date: 2015-06-16
Classification: E21B,G01N

Abstract:
1. A probe system for subsurface chemical sampling comprising: a probe; a fluid source; a detector; a transfer line comprising a first flexible tube for carrying fluid to the probe; and a second flexible tube for carrying sample-loaded fluid from the probe; wherein the first flexible tube connects the fluid source to the probe and the second flexible tube connects the probe to the detector; and an electrical supply for applying a voltage to the second flexible tube or to both the first and second flexible tubes for heating the second flexible tube, or both the first and second flexible tubes: characterized in that the second flexible or both first and second flexible tubes comprise a barrier tube coated with a metal layer and the metal layer of the second flexible tube or of both the first and second flexible tubes is surrounded by an insulating layer, the voltage of the electrical supply being applied to said metal layer and the metal layer being arranged for providing a uniform heat transfer to the barrier tube; and wherein the second flexible tube or both the first and second flexible tubes further comprise(s) a polymer layer positioned between the barrier tube and the metal layer.