Study On Water Injection Adjustment Method In H Block

The development target zones of H Well block is Fuyu oil layer,which belongs to thin oil layer,and adopts injecting development mode in this well area.In the early stage of development,the productivity of horizontal well is high,and it has high efficiency in the well area.But in the development process,the water flooding control degree is low and the remaining oil production is not complete.In order to analyze the factors which cause the problem of development wells,and the main influence factors determine the development effect and to make reasonable adjustments to water injection method based development in the analysis area,select the main influence factors,analysis and evaluation,and according to the evaluation result formulated the reasonable scheme of water injection adjustment.First of all,the geological characteristics and development of H block are analyzed.The dynamic curve of comprehensive development of the block is drawn,and the dynamic characteristics of the block production are analyzed.At the same time,the development effect of the horizontal well group in the block is analyzed.Finally,the main problems of horizontal well development are summarized.Secondly,the reasonable injection production ratio and injection pressure are determined.The relationship between the recovery ratio of mining and reasonable injection production ratio by using material balance principle and Logistic cycle theory,pressure,numerical simulation method is used to verify the application,determine the reasonable injection pressure of reservoir numerical simulation method,for the injection wells horizontal wells of pressure adjustment.Thirdly,the geological model and numerical model of H block are established.The use of H based on data block,using Petrel software to establish a three-dimensional geological modeling study block facies controlled geological model,numerical model is established using Eclipse software,the distribution of remaining oil are studied and analyzed,summed up the remaining types of horizontal wells in the block.Finally,the method of water injection adjustment for H block is given.According to the distribution of remaining oil,put forward measures of horizontal well water injection adjustment of each group,the development effect of reservoir numerical simulation method applied to each of the measures were predicted,and ultimately determine the adjustment of water injection scheme of block.