Study On Logging Evaluation Method In Key Exploration Area Of Hua Bei Oilfield

Based on the analysis of the four-sex relationship in the key exploration area of orth China Oilfield,this paper Establishes the identification plate and standard of oil and water layer in different zones.At present,the difference spectrum and shift spectrum of nuclear magnetic resonance logging fluid recognition are still limited due to the influence of pore structure and fluid properties.In view of this situation,a new method of evaluation is used to construct the water spectrum method to quantitatively identify the fluid properties.In this paper,the method of nuclear magnetic identification of heavy oil layer is proposed.Because of the different response characteristics of crude oil NMR under different physical properties,for high permeability layer,light oil is bimodal,peak is high,;With the oil quality heavier,T2 peaks decreased,the peak left shift,T2 spectrum also has a double peak into a single peak.Therefore,the use of nuclear magnetic resonance data to identify the nature of the fluid to take full account of the impact of pore structure.By studying the characteristics of T2 spectra of different fluid properties under different permeability conditions,the adaptability of using NMR data to identify fluid properties is summarized.In this paper,four methods of identifying gas layers are proposed.Poisson's ratio and Lame coefficient overlap method or intersection diagram are used to identify gas layer,Lame coefficient and gas compression coefficient overlap method or intersection diagram to identify gas layer,Poisson's ratio and bulk modulus Overlapping method or intersection diagram to idEentify the gas layer,the usEe of longitudinal wave amplitude attenuation can effectively determine the gas layer,these methods in the North China Oilfield Langgu area has been fully applied.Based on the analysis of the influencing factors and the principle and method of reservoir productivity prediction,the paper analyzes the natural capacity logging analysis based on the percolation theory and the key exploration and analysis of the natural capacity logging based on the pore structure evaluation.Development of blocks to establish Jizhong,Erlian area capacity evaluation methods,plates and standards,the formation of suitable for the production of rapid capacity evaluation of the process,norms.