Research advances and specific scientific issues of diagenetic dynamics in deeply-ultra deeply buried sedimentary basins
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Abstract: [Objctive] Sedimentary diagenesis or fluid-rock interaction is an important aspect of basin dynamics, but the related research in deeply-ultra deeply buried basins, with many doubts, is still confused, and the core scientific and technological issues need to be refined. [Comments] This paper mainly reviews several research fields closely related to diagenetic dynamics with deep-ultra deep characteristics in oil and gas bearing basins, including the current research status and progress in understanding basin types and physical property evolution, fluid activity attributes and effects, diagenetic dynamic regimes, and high-resolution characterization and identification techniques of diagenetic records. [Conclusions] On this basis, the paper presents our thoughts on the research trend of diagenetic dynamics, believing that the coupling evolution of temperature, pressure/stress, fluid, and time is the basic factors controlling the diagenetic evolution of basin-filling materials, and that specific issues such as fluid phase behavior, rock physical property evolution, fluid rock interaction types and effects in deeply-ultra deeply diagenetic environments should become the focus of current fundamental research frontiers.
Keywords: deeply-ultra deeply buried basin, fluid-rock interaction, diagenetic dynamics, basin dynamics, oil-gas