Comprehensive Evaluation Of Reservoir Logging In Qutang Sub-Concave 23H1 Well Area

The logging construction,data processing and primary interpretation of the northern Jiangsu oilfield are completed by multiple logging units respectively,and the phenomenon of contradictory interpretation parameters and interpretation conclusions frequently occurs.Therefore,a unified interpretation standard needs to be established.Therefore,the secondary fine interpretation of logging data is carried out.work is particularly important.In order to avoid the situation of high water and low oil production in the newly drilled key horizontal well of X 23H1 and improve the single well production of horizontal wells,it is necessary to summarize and evaluate the "low porosity,low permeability,low saturation and thin layer" of the third member of Fu.Specifically,on the basis of a comprehensive study of the reservoir geological knowledge,geological logging,core analysis and testing data and logging reservoir evaluation in the third member of the Fu 3 member of the Qutang sub-sag,compared with the X H1,X 203H1 and X 14H1 that have been implemented in the previous period,X 15H1,X 10H2,X16H1 and X 16H2 wells,respectively,from the geological structure,mineral composition,clay content and composition,porosity and permeability characteristics,and oil saturation and other aspects of fine comparison research.The paper mainly discusses the following three aspects:(1)Research on the relationship between the "four properties" of the reservoir: the core analysis data,combined with logging data,the lithology,physical properties,pore structure and oilbearing characteristics of the reservoir in Well X 23H1 were studied,and the relationship between the "four properties" of the reservoir was clarified.(2)Quantitative evaluation of reservoir parameters and identification of fluid properties: Using core calibration logging technology,the relationship between reservoir parameters and logging data was analyzed through histogram,cross-plot technology and related experience charts,and the third member of the Fu third member of the Qutang sub-sag was established.Quantitative interpretation model for important parameters such as reservoir shale content,porosity,permeability,saturation,irreducible water saturation,etc;Quantitative evaluation of reservoir parameters and identification of fluid properties in target wells.(3)Complete the comprehensive evaluation of reservoir logging in Well X 23H1,and use the identification chart to conduct re-examination of old wells in the study area to find reservoir sections with rich oil content.The research results will provide interpretation models,fluid identification methods and corresponding charts for the logging evaluation work in the study area,and further improve the exploration level and development efficiency of the study area.