气体混相驱课件.ppt

1、LTPC10%L20%L30%LBAGFET,POCO2L1G1L1CO2L2G212GGLL210.80.60.40.20.02468CO2与原油接触次数与原油接触次数(g/ml)T=57.2 oC P=13.78MPa抽提出来的原油抽提出来的原油未被抽提出的原油未被抽提出的原油P=20.67MPa原油密度与抽提次数的关系示意图原油密度与抽提次数的关系示意图P2P3P1CO2/原油体系的原油体系的P-X图图PCO2的摩尔分数的摩尔分数(XCO2)0100100%L100%VLL+VL+VABC010550液液量量体体积积百百分分数数临界点临界点L+VC7+C2-6CO2E油藏流体油藏流体重烃

2、重烃Heavy Hydrocarbon轻质和中间组分轻质和中间组分Extractable Hydrocarbon临界点切线临界点切线L+VC7+C2-6CO2E油藏流体油藏流体重烃重烃Heavy Hydrocarbon轻质和中间组分轻质和中间组分Extractable HydrocarbonL+VC7+C2-6CO2E油藏流体油藏流体重烃重烃Heavy Hydrocarbon轻质和中间组分轻质和中间组分Extractable HydrocarbonPCO2的摩尔分数的摩尔分数(XCO2)0100100%LL100%UL030105090LL+VLUL+LLABCDC7+C2-6CO2ELL+V

3、C7+C2-6CO2ELL+ULLL+VLL+UL+VC7+C2-6CO2ELL+VLL+ULLL+UL+VC7+C2-6CO2ELL+ULPCO2的摩尔分数的摩尔分数(XCO2)01009050100100%LLLL+VLUL+LLABCDC7+C2-6CO2ELL+VC7+C2-6CO2 ELL+UL+VLL+ULLL+VC7+C2-6CO2ELL+ULLL+UL+VLL+VC7+C2-6CO2ELL+ULT,PC7+C2-6CO2重烃重烃Heavy Hydrocarbon轻质和中间组分轻质和中间组分Extractable HydrocarbonK1xL1V1Y1:进入气相中的进入气相中的

4、C2-6T,PC7+C2-6CH4重烃重烃Heavy Hydrocarbon轻质和中间组分轻质和中间组分Extractable HydrocarbonK2xL2V2Y2:进入气相中的进入气相中的C2-6T,PC7+C2-6CH4(CO2)重烃重烃Heavy Hydrocarbon轻质和中间组分轻质和中间组分Extractable HydrocarbonxV2V1Oil(T,P)P,TCO2C7+C2-6K油藏流体A油藏流体B注入气GCO2C7+C2-6注入气GKP,T油藏流体AM1L1G1M2L2G2G2+AAAAAAAAAAAACO2(G)G+M1(L1+G1)G1+M2(L2+G2)G2+

5、M3(L3+G3)G3+Gk+CO2C7+C2-6注入气GKP,T油藏流体BM1L1G1M2L2G2GnCO2C7+C2-6注入气GKP,T油藏流体AM1L1G1M2L2G2LnOil(T,P)C7+C2-6P,TCH4K油藏流体油藏流体A注入气注入气G注入气注入气PC7+C2-6P,TCH4K油藏流体油藏流体A注入气注入气GM1L1G1M2L2G2CH4C7+P,TK油藏流体A注入气PC2-6M1L1G1M2L2G2LnC7+C2-6P,TCH4K油藏流体油藏流体A注入气注入气GM1L1G1M2L2G2LnGnT=TresrevoirP=P2 P2P1CO2C7+C2-6油藏流体油藏流体BK

6、T=TreservoirP=P3 P3P2KCO2C7+C2-6油藏流体油藏流体B恒温空气浴恒温空气浴CO2原油原油溶剂溶剂回压调节器回压调节器观察窗观察窗填砂细管填砂细管OD:1/4 inch (6.35mm)L:40ft(12.2m)9080706050100试验压力试验压力(MPa)6.07.08.09.010.0采收率（采收率（%）注入注入1.2HCPV时的时的MMPP=P1T=TreservoirOilCO2P=P2P1T=TreservoirOilCO2P=P3P2T=TreservoirOilCO2P=P4P3T=TreservoirOilCO2MMP=P4？P=P5P4T=TreservoirOilCO2MMP=P5Why?