METHODOLOGICAL APPROACH TO PROCESSING TRACER STUDY RESULTS IN CONDITIONS OF COMPLEX GEOLOGICAL STRUCTURE

This article presents a methodical approach to processing the results of tracer studies in conditions of a complex geological structure. The object of the study was a terrigenous formation of one of the oil fields of the East Orenburg arched uplift. It is noted that clarification of the geological structure, filtration-capacitive properties with an assessment of the hydrodynamic connection along the formation in the process of development and operation of hydrocarbon deposits are a mandatory and integral procedure in the implementation of the research program and additional exploration. The main criteria for the effectiveness of tracer studies are presented. Based on these criteria, a method is proposed for predicting the output of indicator fluid to the bottomhole of wells during the corresponding hydrodynamic studies. High convergence of the predicted and actual results of tracer studies is noted. It was revealed that the main output of indicator fluid (actual and predicted) is confined to reservoir zones with a permeability above 500 10-3 μm2. A correlation dependence of the distribution of the tracer fluid yield on a number of geological and geophysical properties and technological indicators of well operation was constructed.