Study On Remaining Oil Distribution And Tapping Potential Technology In Xing 6 East Block

The Xing 6 East Block has reached the late stage of high water cut,with a comprehensive water content of more than 90%.It is necessary to effectively tap the remaining oil while controlling the rise of water content.This topic establishes the geological model and numerical simulation model of the Xing 6 East Block,and completes the fitting of stratified reserves,cumulative production of well pattern,accumulated liquid and moisture content.In the demonstration area,a total of 6 types of residual oil,such as differential type,interlayer interference type,injection production relation,interlayer interference type,stagnant zone type and thick oil layer top type,are divided.In this paper,the corresponding determination conditions are proposed,and the crossover between various types of remaining oil is solved,and the quantity of various types of remaining oil is quantified by using the numerical simulation model.On the basis of the overall understanding of the distribution of residual oil in the demonstration area,the effect of the overall measures for digging the latent energy during the fine excavation of the demonstration area was evaluated,and the recovery rate was increased by 1.29 percentage points.Then,the effects of single measures such as water well adjustment,water well measure and well measure are evaluated,and the effective tapping mode for different types of remaining oil is determined.At the same time,combined with water saturation field,the evaluation system of water flooded level is set up,including evaluation index system,weight system,classification standard of each index and fuzzy evaluation model,and the water flooded level is divided into various layers of oil wells.Aiming at the remaining oil enrichment area of the mild watered out area,a targeted combination of potential tapping schemes is put forward,and a treatment plan for severe water flooded zones is proposed.The results of the study during the fine excavation of the comprehensive demonstration area gave a work plan for the period of water control,and 93 thousand and 500 tons of oil were expected to be increased,and the economic evaluation results of different oil prices and staircase oil prices were good.