Drawdown = PR - Pwf . Inflow Performance Relationship (IPR)1. Straight-line IPRqo= C(P2RP2wf)nqo= !(PRPwf)"pen-flow potentialIPR #alc$lation %ethods#onceptsProd$cti&it' Inde() !2. non-linear IPR *ogel+s %ethodIPR #alc$lation %ethods,. -et.o&ich+sqoqo(ma()1 - PwfPR=2nFor case of n =1) /ased on field o/ser&ations for sat$rated oil wells.normalizationqoqo(ma()1 - PwfPR=2qo= C(P2RP2wf)nDe&eloped from0"/ser&ations of the 1merican 2$rea$ of %ines consider the effect of high &elocit' (non-Darc') t$r/$lent flow)slightl' different from *ogel+s) somewhat more conser&ati&e 3(ercise0 2ac. Press$re) *ogel+s 4 -et.o&ich+s %ethodsData from a m$ltirate test for a well prod$cing from a pa' 5one in a field is gi&en in 6a/le 71.1. #alc$late the prod$cti&it' inde() J /ased on the lowest fo$r flow rates. -ind qma( /ased on the straight IPR.2. Plotthe data in 6a/le 71 on the #artesian paper. 8se onl' point 19 to determine qma( with the *ogel+s eq$ation. Plot and ta/$late the calc$lated rates predicted /' *ogel+s against corresponding /ottomhole flowing press$res gi&en in 6a/le 71.,. Repeat step 2 $sing -et.o&ich+s method.:. 8se the 2ac.press$re 3q$ation to ta/$late the calc$lated rates corresponding to the /ottomhole flowing press$res gi&en in 6a/le 71. -ind qma(. PointPwf (psia) qo (st/;da')1 1, 2: