| 摘要 |
A method of preserving hydrocarbon samples obtained from an underground formation includes delivering a coring tool 71 to the formation, obtaining a core sample 23 from the formation, receiving the sample in the tool 71, cooling the core sample 23 in the tool 71, and retrieving the tool 71 with the cooled core sample 23 to the surface. Cooling may be accomplished by Stirling refrigeration or thermoacoustic refrigeration. The temperature of the core 23 may also be measured and the temperature adjusted based on the measured temperature. Also claimed is a method of preserving hydrocarbon samples by use of a tool that involves capturing the samples in a container, sealing the container and storing the container in the tool (Figs 7-9B). |
