1Р35Р15.84057Р8Р16.17084Р36Р15.82816Р9Р16.16257Р37Р15.81644Р10Р16.15567Р38Р15.80472Р11Р16.12534Р39Р15.793Р12Р16.11362Р40Р15.78059Р13Р16.10189Р41Р15.76887Р14Р16.09017Р42Р15.75714Р15Р16.07776Р43Р15.74542Р16Р16.06604Р44Р15.73301Р17Р16.05432Р45Р15.72129Р18Р16.0426Р46Р15.70957Р2)以△Pwf(t)=Pi-Pwf(t)为纵坐标,以lgt为横坐标,则该流动阶段的压力降落呈一线性关系,直线段的斜率|m|=0.1558(Mpa/周期),如下图2所示:Р图2压力降落试井分析半对数曲线Р3)根据渗透率计算公式得到渗透率:Рk=2.121*10-3*qμBmhР =2.121*10-3*159*2*1.3330.1558*9.7536Р =591.66*10-3(μm2)Р4)根据表皮系数计算公式得到S:Р =1.151[17.2375-16.31150.1558-lg591.66*10-30.16*2*2.9*10-4*0.12-0.9077]Р =-0.88Р5)做出井底流压与线性时间的关系图Р将实测点在以Pwf为纵坐标,t为横坐标的直角坐标(如图2所示),发现生产11h后进入拟稳态,采用线性回归得直线斜率m=-0.0119;Р图2压力降落曲线Р6)根据Р推出:Рm=0.04167qBVpCtР得:РVp=0.04167qBmCt=0.04167*159*1.3330.0119*2.9*10-4=2559209(m3)Р计算得油藏半径为:Рre=Vpπh∅=25592093.14*9.7536*0.16=722.7(m)