Research On Optimizing Technology Of Perforated Completion To Adjust The Injection-production Profile In The Oilfield Of Lamadian

In recent years, with the continuous exploration and development of oil fields, theresearching formation conditions become worse, the well condition is more and morecomplex, most reservoirs in Lamadian oilfield is a multi-layer heterogeneous reservoir, thereservoir in the vertical distribution of long well section, multiple layers, each layer of thelarger permeability difference. The injection wells interlayer permeability in different layersin the same production wells or use the same dense hole general perforation mode, not fullyperforating technology of profile control effect of production and injection wells, resulting inthe mining process of multi-layer reservoir heterogeneity differences larger each layer ofliquid production profile is not uniform, interlayer contradiction, high permeability reservoirwater early, low permeability reservoir producing degree is poor, seriously affecting reservoirsingle well productivity and recovery. Domestic experts and scholars in the perforating effectevaluation and improvement, also did a lot of research work, and achieved some results, apreliminary study of the effect of perforation parameters on the productivity and theoptimization design software; established a set of relatively complete development ofperforating bullet, production and testing system; carried out many to protect oil gas reservoirperforation technology aimed.The research mainly includes two aspects: one is the research scope of the expansion ofthe perforation parameters, hole depth of50mm~5000mm,5mm~50mm diameter, holedensity1~40hole/m, phase angle was30°,45°,60°,90°,120°,180°,360°. Through thecalculation of various schemes, various influence of perforation parameters on wellproductivity curves are given, which will make the results can meet the need of perforationoptimization work over a longer period of time, and has important guiding significance forthe future development of new high-efficiency perforator. The two is based on fine geologicstudy results, using the percolation theory to analysis, optimization mathematical model usinghydrodynamic mechanism to built perforating, perforating parameters of differentpermeability reservoir optimization, implementation of perforating adjust liquid productionprofile, thereby improving the differential oil reservoir...