压裂水平井多井干扰数值试井分析

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关键词：致密油气藏；压裂水平井；复杂缝网；多井干扰；数值试井；压力特征分析

Numerical Well Testing Analysis of Multi-well Interference from Multi-fracturedHorizontalWells

HE Youwei1，2*， CHEN Zhangchi²， TANG Yong1，²， ZHAO Guoqing²， WU Keyu²

1.StateKeyLbatoryOilelodExplatiousttrolUieityeduana 2.PetroleumEngineeringSchool，SouthwestPetroleum University，Chengdu，Sichuan 61o5oo，China

Abstract：Interwellinterferencecannotbeignoredespeciallyintightandunconventionaloilandgasreservoirssinceadjacent wells maybecommunicatedthrough natural fracturesorevenhydraulic fractures due totight wellspacing.Currently，the wel testing modelsarefocusedonanindividualwellwithsimplefractures.Itlacks thewelltstingmodelconsideringmultiplewels with complex fracture networks.Itisnecessarytodevelopthenumerical welltesting methodofmulti-welliterference，and analyzetheimpactofadjacentwelsandfracturenetworkparametersonthepresure transientbehavioroftheobservedwels. Thus，thisworkproposesanumericalwelltestmodelofmultiplefracturedhorizontalwellswithcomplexfracturenetworks.The accuracyandadvantages ofthe proposed modelarevalidated.The efect ofwellinterference，adjacent wel's production，nonuniformfractureaperture，fracture networks，fractureconductivityofhydraulicandnatural fracturesonthepressure transient behaviorareanalyzed.Welldevelopednaturalfractureslead tobeterinterellconnectivityandtheadjacent welsinflence thefracture linearflow，fractureradialflow，elipticalflow，andfinalradialflow period.Whenthe natural fractures arenot welldeveloped，theadjacetwellsfectteidleandlatepressurebhaviorofteobservationwell.Thedeveopedmultiwellumerical welltestingmodelintisworkconsidersthecomplex fracture networks，irrgularfractures，nonuniformgas production profile，and interwellinterference， whichcan characterizeearly presure behavior and pressure diferences among matrix，fractureandthrgridsmoreclearly.Iteriches teumericalwelltestinganalysismethodoftightandunconvetional oil and gas reservoirs.

Keywords：tightoilandgasreservoirs; multi-fractured horizontal wels;complex fracture networks; multi-wellinteference; numerical well testing;pressure behavior analysis

网络出版地址：http：//kns.cnki.net/kcms/detail/51.1718.TE.20250707.1454.002.html

引言

试井是油气藏动态监测获取地层参数与井参数的重要手段，但在处理复杂缝网、井间干扰、多相流时存在局限性。（剩余19927字）