Study On The Physical Properties Of The Granite And Conglomerate Reservoirs In The Baikouquan Formation Mahu Depression

Physical properties are important indicators of log evaluation reservoirs.Based on the characteristics of reservoir geology,combined with the production and experimental data,combined with the characteristics of conventional log response and nuclear magnetic log response characteristics,this paper is based on the characteristics of reservoir geology,The physical properties of the granite and conglomerate reservoirs in the Baikouquan Formation of the Mahu Depression are studied in depth.Based on the core scale log technology,the effects of clay content,particle size and dissolution on the physical properties of the reservoir were analyzed from the analysis data of the whole rock.The physical properties of the compacted sandstone and conglomerate reservoirs in the Formation were analyzed.Control factors for the clay content.The calculation model of the clay content of the ultra-low porosity and gritstone conglomerate was established by using the regression fitting modeling and the NMR log and conventional log data partitioning,which solved the difficult problem of clay mineral content calculation in the sandstone and conglomerate reservoir.On this basis,the effective pore-permeability calculation model of ultra-low porosity and gritstone conglomerate can be effectively constructed to eliminate the influence of clay.Based on the results of clay content,porosity and permeability,the reservoir physical characterization parameter-reservoir quality factor was constructed,and the logging characterization of reservoir physical properties was realized.Finally,the reservoir quality factor and the reservoir characteristics are used to predict the reservoir classification and producibility of the sandstone and conglomerate reservoir in the target area,and the obvious geological effect is seen.