天然氢富集过程及勘探技术研究进展OA

Natural hydrogen,characterized by its zero-carbon emission,low price,and sustainable supply,has emerged as a pivotal frontier in the development of hydrogen energy.Its enrichment process is fundamental to the formation and efficient utilization of natural hydrogen reservoirs.Based on a systematic review of relevant studies from both domestic and international sources,this study investigated the types of material foundations for natural hydrogen generation(hydrogen source rocks)and their differences in hydrogen-generation capacity,the dissipation mechanisms(including diffusion,dissolution,and adsorption)of natural hydrogen,the methodological similarities and differences between natural hydrogen and conventional oil and gas resource assessment,and the value of numerical simulation in advancing natural hydrogen research.As indicated by the research results,the distribution of natural hydrogen varies significantly due to diverse geotectonic structures;specifically,deep-seated faults serve both as pathways for deep-sourced hydrogen upwelling and as primary constraints on the distribution of effective hydrogen source rocks.However,current genetic identification using hydrogen and helium isotopes remains challenged by uncertainties regarding the co-genetic nature of hydrogen and helium,as well as the ambiguous evolutionary pathways of hydrogen isotopes.Furthermore,natural hydrogen faces complex preservation conditions.Diffusion,aqueous dissolution,and adsorption were identified as the primary drivers of hydrogen loss,which represent the most critical factors affecting the accuracy of resource assessment.In terms of resource evaluation,adapting conventional oil and gas assessment methods to natural hydrogen resources poses three major challenges,that is,differing evaluation logic,distinct evaluation criteria,and fundamental disparities in core parameters and quantification methods.Therefore,numerical simulation represents a key approach for quantifying natural hydrogen resource volumes and,following further development,can be more widely applied to studies of the migration and enrichment mechanisms of natural hydrogen.