致密气藏压裂水平井数值模拟分析

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1、ThenumericalsimulationofFracturingHorizontalWellinTightGasReservoirsLiXiaoyan(Oil&GasFieldDevelopmentEngineering)DirectedbyProf．YaoJunAbstractrightsandstonegasreservoirshavealargeproportioninchina’Snaturalgasreservoirs．Itsmaincharacteristicsarelowporo

2、sity,lowpermeability,strongheterogeneity,andlownaturalcapacity．Soitisdifficulttoexploit．Atpresent，wehavemakeabreakthroughintheapplicationofmultiplyfi'acturinghorizontalwells．Duringthedevelopingoffightgas，fightgasreservoirsshowstrongstresssensitivityas

3、thereductionoftheformationpressure．111ispaperdiscussesthestresssensitivityoftightgasreservoirswithlowpermeabilitycorewhichcomesfromJingbiangasfield，andanalysistherelationshipbetweenpermeabilityandeffeetivestress．Wehavediscusssomeinfluencefactorsonexpl

4、oitingtightgasreservoirswithhorizontalwellandfracturedhorizontalwellincludinggeologicalfactorsandengineeringfactorsbythewayofnumericalsimulation，local酣drefinement，orthogonalexperimentaldesignandPEBIgirdrefinement．Discusstheimpactofstresssensitiveonsta

5、bleproductionperiodandtherecoveryoflaterstableproductionperiod．Intheprocessofnumericalsimulation，considerthefractureconductivitychangeswithtime．BasedondailyproductiondataofthegasfieldShah231wellsarea,wecarryouttheproductionofdynamicanalysis，andgetdyna

6、micgeologicalreservesofasinglewellwiththemethodofmoderninstabilityanalysis，suchasBlasingame，AGRateVS．Time，NormalizedPressureIntegral(N．P．I)，EM．BandTransient,etc．Dividethewellintothreecategoriesaccordingtotheresultsofdynamicreserves．Thencarryoutanumeri

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8、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯52．2应力敏感性评价⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯62．2．1渗透率应力敏感性的实验研究⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．62．2．2储层应力敏感性实验分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．92．3本章小结⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．12第3章致密气藏压裂水平井产能影响因素分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯133．1致