The theoretical and technological innovation in the exploration of conglomerate reservoirs has driven the discovery of a billion-ton super-large conglomerate oilfield in the Mahu Sag. To further enrich and refine the theory of reservoir formation and enrichment in large conglomerate oil areas, this paper uses the exploration practice of the Mahu Sag as a representative case, focusing on the geophysical needs of large-scale fan-delta conglomerate reservoir exploration. It systematically summarizes advances in seismic interpretation techniques for exploring large fan-delta conglomerate reservoirs from five key aspects: micro fault characterization, seismic facies analysis, high-precision reservoir prediction, fracture prediction, and oil and gas detection. It also analyzes the situation and needs faced by efficient exploration and development of conglomerate reservoirs, and points out the development trend of seismic interpretation techniques for complex conglomerate reservoir exploration, which is advancing towards intelligent interpretation and quantitative reservoir prediction. The study reveals that, given the strong heterogeneity and complex seismic response of conglomerate reservoirs, customized multi-technology integration schemes (e.g., attribute fusion, dual-parameter inversion) are key to improving exploration precision. Furthermore, seismic interpretation must be deeply integrated with development needs. Particularly in optimizing volume fracturing for deep conglomerates, geo-engineering integrated interpretation results can effectively mitigate development risks. This work provides technical support and successful experience for exploring and developing large-scale conglomerate reservoirs in depression areas.
Lin et al. (Sun,) studied this question.