Study On Rock Erosion Evaluation Method Of Bedrock Buried Hill In ZD

Erosions often occur in igneous rocks,which adversely affect the identification of effective reservoirs.At present,there has been a lot of research on the erosion mechanism,erosion type and associated phenomena of igneous rocks.How to reduce or eliminate the impact of erosion in the identification and evaluation of igneous reservoirs has always been the direction of scholars.In this paper,the igneous rocks that have undergone erosion in the study area are taken as the object,and the existing slice data are statistically processed.The typical rock formation types in the area are summarized,and the mechanism and type of erosion are understood and summarized.The analysis shows that the log response curves(such as gamma,resistivity,etc.)and the petrophysical index will show different changes in igneous rock when they are altered by lithology.By comparing the existing erosion index calculation method and the proposed erosion index calculation method,it is found that the neutron-density erosion index method is more conducive to the erosion analysis of the study area.And introduce the concept of physical property index and MOSTAFA model to jointly judge the formation pores.Through the above analysis,the effective reservoir judgment basis is used to achieve good application results in the region.The research system can improve the effective utilization rate of the coring in the region,improve the development efficiency,and save the cost of the preliminary experiment.