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低渗透油藏高含水期层间径向钻孔油藏工程优化研究.docx

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低渗透油藏高含水期层间径向钻孔油藏工程优化研究 Abstract: Withtheimprovementofoilfielddevelopmenttechnology,heterogeneousandlow-permeabilityreservoirshavebecomeafocusofattention.Thepaperstudiestheoptimizationofinterlayerradialboreholeengineeringinlow-permeabilityreservoirswithhighwatercontent.Basedonthedataofacertainoilfield,thepaperanalyzesthecharacteristicsofthelow-permeabilityreservoirintermsoflithology,porosity,permeability,andwatercontent.Then,aninterlayerradialboreholemethodbasedonthecharacteristicsoflow-permeabilityreservoirsisproposed,andtheeconomicandenvironmentalbenefitsareevaluatedthroughsimulation. Keywords:low-permeabilityreservoir;highwatercontent;interlayerradialborehole;optimization;economicandenvironmentalbenefits Introduction: Inrecentyears,thedevelopmentoflow-permeabilityreservoirswithhighwatercontenthasbecomeamajorchallengefortheoilandgasindustryaroundtheworld.Duetothecharacteristicsoflowpermeabilityandhighwatercontent,traditionaldrillingmethodsareoftenineffective,andtheeconomicbenefitsofoilfielddevelopmentaregreatlyreduced. Inordertoimprovethedevelopmentefficiencyoflow-permeabilityreservoirswithhighwatercontent,theinterlayerradialboreholemethodhasbeenproposedandwidelyused.Thismethodcangreatlyimprovetheyieldofoilproduction,reducethewatercontentofoilwells,andimprovetheoveralleconomicandenvironmentalbenefitsofoilfielddevelopment. Basedontheabovebackground,thispaperanalyzesthecharacteristicsoflow-permeabilityreservoirswithhighwatercontentandproposesaninterlayerradialboreholeoptimizationmethod.Throughsimulationtests,wehaveevaluatedtheeconomicandenvironmentalbenefitsofthismethodtoprovideatheoreticalbasisforthedevelopmentoflow-permeabilityreservoirswithhighwatercontent. Characteristicsoflow-permeabilityreservoirswithhighwatercontent: 1.Lithology:Thelithologyoflow-permeabilityreservoirsisoftencomplexandvaried,withmanylithologicalirregularities.Thepresenceofdifferentrockscanleadtodifferentporosityandpermeabilitycharacteristics,whichmakesitdifficulttoestablishanaccuratemodelofth