Abstract: A method and apparatus for providing an inspection of a weld are disclosed wherein the method comprises: providing weld inspection apparatus in proximity with a weld on a substrate to be inspected; conducting the inspection, wherein the substrate is provided at an elevated temperature state above ambient temperature by heating during the inspection, the conducting of the inspection including: emitting an ultrasound wave into a volume of the substrate and weld; receiving at least a part of the ultrasound wave back from the substrate and weld, thereby acquiring multiple signal sets; then processing one or more of the multiple signal sets to provide weld inspection data; wherein the processing includes a correction for temperature distribution within the volume of the substrate and/or the weld, at the elevated temperature.

Abstract: A method of welding and apparatus for implementing the method are provided which employ inspection of a weld formed by the method of welding. The inspecting of the weld is provided by the inspection apparatus at an inspection location on the one or more welded substrates, with the inspection location at an elevated temperature above ambient, for instance wherein the elevated temperature is at least 180° C. above ambient or even at least 350° C. above ambient. In this way the inspection can be performed without the substrate needing to cool and faster inspection and faster weld remediation times are achieved.

Abstract: A method and apparatus for providing an inspection of a weld are disclosed wherein the method comprises: providing weld inspection apparatus in proximity with a weld on a substrate to be inspected; conducting the inspection, wherein the substrate is provided at an elevated temperature state above ambient temperature by heating during the inspection, the conducting of the inspection including: emitting an ultrasound wave into a volume of the substrate and weld; receiving at least a part of the ultrasound wave back from the substrate and weld, thereby acquiring multiple signal sets; then processing one or more of the multiple signal sets to provide weld inspection data; wherein the processing includes a correction for temperature distribution within the volume of the substrate and/or the weld, at the elevated temperature.

Abstract: A downhole logging tool, comprising: a sensor device comprising a sensor configured to electrically detect at least one physical characteristic downhole fluid such as temperature or flow. The sensor comprises a bridge circuit having a four electric components for electric detection of the physical characteristic. The electric components, often resistors, are often spaced apart in pairs where a first and second components are situated together next to each other; third and fourth electric components are situated together in close proximity and next to each other; whilst first and the third electric component are configured to be in parallel with the second and the fourth electric components. A heater may be added to the tool to generate a pulse of heat which may be detected by the sensors and provide data indicative of flow in the well. Accordingly embodiments of the invention can detect temperature in a well, and indeed fluid flow, which can be indicative of leaks in the well.