Relative Permeability And Nuclear Magnetic Resonance(NMR) Analysis Applied In The Evaluation Of Oil And Water Layer

Reservoir physical parameters is the important basis of hydrocarbon reservoir evaluation,effective porosity and permeability are two important numerical values of the oil and gas layer evaluation method.Phase permeability for the core sample to calculate oil-water relative permeability,determine the output of oil and water,is one of the important parameters of hydrocarbon reservoir evaluation,due to less coring Wells and phase permeability analysis cost is high,it is difficult to popularization and application.This topic first group combined with mri,calculate the reservoir oil-water relative permeability,the reservoir fluid producing properties of identify and evaluate the output capacity;Nuclear magnetic resonance analysis can provide samples of rock parameters such as porosity,permeability,pore throat radius,from the analysis of data and the spectrum diagram can intuitively reflect the physical properties of the reservoir.NMR analysis can not only provide reliable reservoir property parameters,can also through the core sample in the occurrence of oil and water signal distribution characteristics of qualitative judgment,overcome the limitations of traditional reservoir evaluation.This topic to provide accurate physical parameters and to establish a comprehensive evaluation of oil-water relative permeability,nuclear magnetic data layer method as the main research direction,research based on the core flow experiment,the method of choosing the T2 cutoff value and optimization of the permeability model,ensure the accuracy of the analysis of nuclear magnetic parameters;With relative permeability curve and produced fluid property relations,on the basis of relative permeability curve characteristics of part of daqing exploration area,build relative permeability,imaging data of evaluation method of oil and water layer.This topic strengths of two technologies,greatly improve the accuracy of reservoir evaluation,the rationality of the calculation of reservoir,the reservoir prediction of the reliability and the possibility of the evaluation of well stimulation.