Application of unconventional isotopes in petroleum geology and new progress in petroleum geochemistry
In recent years,the disciplines of petroleum geochemistry and hydrocarbon accumulation have developed rapidly under the guidance of new technologies,new methods and new ideas,and have played important roles in guiding the exploration and develop-ment of ultra-deep,unconventional,and complex oil-gas reservoirs.Among them,the unconventional isotope systems such as metal isotope(non-traditional stable isotope),halogen isotope,and high-dimensional stable isotopes(clumped isotope,triple oxygen iso-tope,polysulfide isotope and intramolecular isotope)have attracted great attention from the academic community and demonstrate one of the most rapid development directions of geochemistry.With the further upgrading of traditional isotope technologies,the analysis technologies of C,H,O,S and N isotope series are still playing a major role.Halogen and silicon isotopes are emerging rapidly.Ge-ochronological study of hydrocarbon accumulation has entered a new era of accurate dating of oil-gas reservoirs.New analysis meth-ods of organic chemicals have made it possible to discover new compounds,and this discovery has provided a new evidence for stud-ying the genesis of oil and gas.With the increasing complexity of oil-gas exploration targets,it is more urgent to carry out the re-search of petroleum geochemistry.In the future,the research and development and application of new technologies will be the impor-tant mission for researchers in the field of petroleum geochemistry and hydrocarbon accumulation.
metal isotopeclumped isotopehigh-dimensional isotopehalogen isotopegeochronology of hydrocarbon accumulationdolomite
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