PDF-低压及欠平衡钻井中注气量对井内压力的影响Ξ

:1000-2643(1999)04-0050-03X1,1,2,3(11,400042;21;31):,,,,,:;;;:TE243.2:A,,,,(),(),,,11.1(1)55t(AgEg)+55S(AgEgvg)=0(2)55t(Am(1-Eg))+55S(Am(1-Eg)vm)=0(3)55tA(gEgvg+m(1-Eg)vm)+55SA(gEgv2g+m(1-Eg)v2m)+AggEg+m(1-Eg)cos+55S(AP)+A5P5Sfr=0(4)g=ZsTsZTgsPsP(5)A=A(S)=(S)(6)T=T(S,t)(7)vg=C0(Egvg+Emvm)+vgr(8)Qgb=(Zb/Zs)(Tb/Ts)(Ps/Pb)Qgs(9)5P5Sfr=F(Re,m,m,De,,vm)1.2214Vol.21No.4199911JournalofSouthwestPetroleumInstituteNov1999X:19990302:(1955),(),,,©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(m)()(/m)(g/cm3)(m)(mPa.s)(Mpa)(O)(mPa.s)4340200.0331.0251003.04.821980.60.022(m)(mm)(m)(mm)(mm)04240220041721271004240434021641724340158742.2,::,,13,,1,,,,;,,,123,,,,2154:©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),20L/s,2,,,,:,;,,,,,,,,325L/s,,,,,,4Qg1=12m3/min,Qg2=36m3/min,Qg3=60m3/min,4,(a);(b);(c);(d),,,,P;t;v;Q;T;;;;E;A;S;Z;Co;vgr:g;m;b;s;M:[1]G.W..[M].:,1986[2].:[M].:,1984[3],.[J].,1998(4):586[4]FanJun,ShiTaihe.Adynamicmodelandsimulationforkillingofemptyholeblowout[C].SPE49963,1998[5]RommetveitRetal.Adynamicmodelforunderbalanceddrillingwithcoiledtubing[C].SPE/IADC29369,1995[6]HasanARetal.Astudyofmultiphaseflowbehaviorinverticaloilwells[A]:Theoreticaltreatment.SPE15138,1986()251999©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.