断块油气田2023年5月收稿日期：2022-11-10；改回日期：2023-03-21。第一作者：万小进，男，1987年生，硕士，主要从事采油工艺方面的研究。E-mail：wanxj2@cnooc.com.cn。通信作者：贾虎，男，1983年生，教授，博士，主要从事油田化学与提高油气采收率、储层保护与改造领域科研工作。E-mail：tiger-jia@163.com。引用格式：万小进，黎棚武，吴绍伟，等.海上高含水大液量水平井凝胶堵水数值模拟［J］.断块油气田，2023，30（3）：466-474.WANXiaojin，LIPengwu，WUShaowei，etal.Numericalsimulationofgelwatershutoffinoffshorehorizontalwellswithhighwatercutandlargeflow［J］.Fault-BlockOil&GasField，2023，30（3）：466-474.NumericalsimulationofgelwatershutoffinoffshorehorizontalwellswithhighwatercutandlargeflowWANXiaojin1,LIPengwu2,WUShaowei1,PENGDongyu1,CHENGLimin1,JIAHu2(1.ZhanjiangBranchofCNOOCLtd.,Zhanjiang524057,China;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,SouthwestPetroleumUniversity,Chengdu610500,China)Abstract:Thechemicalwatershutoffofhorizontalwellsundercomplexconditionshasmanyuncontrollablefactors,harshconstructionconditionsandlowwatershutoffsuccessrate.Fortheseproblems,thephysicalexperimentandnumericalsimulationareusedinthispaper.Thewatershutoffeffectresearchwithnanophenolicgelincoredimensioniscarriedout,andthegelwatershutoffmechanismmodelissetupbyconsideringthecrosslinkingreactionandadsorptiontheory.Then,theLangmuirisothermadsorptioncoefficient,rockmaximumadsorptionandresidualresistancefactorareobtainedbyfittingexperimentdata.TakingWellA8H1,ahorizontalwellwithlargeflow(>1,000m3)andhighwatercut(＞90%),inWenchang19-1oilfieldasanexample,thenumericalmodelofwatershutoffinsinglewellisestablishedbygridinfusingnearwellzoneforstudyingtheinfluencingfactorsofgelwatershutoffeffectinhorizontalwell.TheresultsshowthattheoptimaldrugdosageforwellA8H1is250m3,whichislimitedbytheadsorptionlevelofactualreservoirrocks.Thesmallerthewatercutoftheoilwell,thelowertheproductionpressuredifferenceandformationpermeabilityratio,andthebetterthegelwatershutoffeffectofhorizontalwell.Theresearchresultscanp...
