Research On Low Porosity And Permeability Reservoir's Logs Interpretation Methods Of Dongling Nosing Structure In Changling Fault Depression

Dongling nosing structure zone characteristics with low porosity and low permeability,which made identifying and evaluating reservoir fluids more difficult,and reservoir comprehensive evaluation became a big problem in well logging interpretation.Therefore,if we want to improve the precision of reservoir identification,parameter evaluation and fluid identification,it is urgent need to study logging interpretation method in the region of porosity and low permeability reservoir.This study focused on the reservoir's geological characteristics study in Dongling nosing structure operating with the comprehensive analysis of the existing core analysis data,logging data and logging data processing in the studied area,and combining with the test date,we conducted in-depth and meticulous research to the objective interval reservoir lithology,physical properties,fluid properties and its logging characteristics.From the data sorting,curve's standardization,the study on four properties ' relations,to systematically setting up the lower limit standards of available reservoir in purpose layer and the logging interpretation model of reservoir parameters.A series of identification methods were used for the qualitative identification of oil and gas layer,and established an effective reservoir comprehensive evaluation method.Finally,logging data's explanation and reservoir's second recognition and evaluation were used to the target wells in study area,which provided an important decision-making basis and reference for the exploration and development of oil fields.