底水稠油油藏水平井复合增产技术 compound stimulation techniques for heavy oil reservoirs with bottom water.pdfVIP

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底水稠油油藏水平井复合增产技术 compound stimulation techniques for heavy oil reservoirs with bottom water.pdf

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底水稠油油藏水平井复合增产技术 compound stimulation techniques for heavy oil reservoirs with bottom water

４４１ Vol.４４ No.１２０１６１ PETROLEUM DRILLING TECHNIQUES Jan．，２０１６磼磾 doi：１０．１１９１１／syztjs．２０１６０１０１３（，２５７２３７）：、、、，。，，，，，，、。１７，２７．５，３２０５ t，。，、。：；；；；；；：TE３５７：A ：１００１０８９０（２０１６）０１００６７０６ Compound Stimulation Techniques for Heavy Oil Reservoirs with Bottom Water DU Yong （Zhuangx i Oil Production Plant ，S inop ec Shengli Oilf ield Comp any ，Dongy ing ，Shandong ，２５７２３７， China） Abstract ：In theZhuangxi Oilfield，horizontal wells in heavy oil reservoirs with strong bottom water are characterized by highliquidproduction ，highwater cut ， oor development output anddifficulty inpro- p ducing the remaining ．In order to solvetheseproblems，aseriesof studieswascarriedout to developcom- pound stimulation techniquesfor heavy oil reservoirswith bottom water ．First，themechanismsof carbon dioxide huff and puff for improving oil recovery of horizontal wells with bottom-water were analyzed through visualization experiments ．Secondly，a viscosity increasing foam system was prepared by optimi- zing foaming agent andfoam stabilizer so as to deal with carbon dioxideflooding fingering ．And thirdly e- mulsifiedasphalt blocking agent was preparedby optimizing emulsifier so as to blocking high- ermeabilityp paths．Thecompoundstimulationtechniquesweredesignedbasedoncarbondioxidehuff andpuff ，viscosi- ty increasing foam system and the development of an emulsified asphalt blocking agent ．These techniques were applied seven times in heavy oil reservoirs containing bottom water of Block Zhuang １． The tech- niques resultedin a remarkable increase in oil production with a corresponding decrease