有机差热及其在石油地质上的应用

The technique of differential thermal analysis is widely used to investigate dispersed organic matters present in sedimentary rocks in an attempt to interprete some problems concerning petroleum geology. In our practice, sufficient separation of organic matters from the mineral matrix has been made and DTA curves measured.On the basis of the characteristie of DTA curves, the classification of the types of organic matters has been done and a series of indexes developed to determine the degrec of metamorphism of organic matters as well as the possible direction of oil migration, thus providing reliable clues to the promising regions for petroleum exploration. Since various factors would act on DTA curves during experiments, correct and comprehensive interpretation of DTA results still await further investigation.