Logging Evaluation Method Of Tight Conglomerate Gas In The Area Of AD

The area of the Shahezi Formation in AD is located in the lower part of the volcanic rocks of the Yingcheng Formation.With the high industrial effluent of 20.8×104m3 in the area,a good exploration prospect is made,which makes it an important and realistic area for the reserve,In order to meet the needs of reserves submission,single well interpretation and engineering evaluation,it is urgent to carry out technical research,and establish a set of Shahezi Formation in AD area,Well logging evaluation method for dense sandstone and conglomerate gas reservoir.There are the following technical problems in the evaluation of the dense sand and conglomerate gas logging in the AD area.First,the rock type is more complicated,the logging response characteristics are small and the lithology is difficult to identify accurately.Second,the reservoir is dense and the pore structure is complicated,The heterogeneity is also strong,the reservoir parameters are difficult to calculate accurately;the third is the reservoir source rock logging evaluation difficult;Fourth,the dense sandstone conglomerate rock mechanics is difficult to calculate.Therefore,the "seven" parameter interpretation method for carrying out dense sandy gravel gas will be of great significance to the evaluation of unconventional natural gas reservoirs in the future.In view of the above technical problems,this paper systematically evaluates the "seven" logging evaluation of the compact sandstone and conglomerate gas reservoir in the Shahezi Formation of the AD area.The lithologic identification methods of conventional logging data and imaging logging data are established.Based on NMR,conventional and mercury intrusion data,the reservoir pore structure and the conductivity mechanism are studied.Based on the data of acoustic wave,nuclear magnetic field and conventional logging,the fluid identification plate and reservoir classification standard of different types of reservoirs are established.The characteristics of logging response of source rock are analyzed and established.Based on the characteristics of longitudinal and transverse wave logging,the elastic parameters,rock brittleness index,geostress size and direction logging evaluation method are established,and the evaluation of engineering quality parameters is realized.Through the application of a set of AD area Shahezi group of dense gas reservoir logging comprehensive evaluation technology,in the production to see a better effect for exploration and deployment,storage submission and engineering evaluation to provide technical support.