石油化工高等学校学报
石油化工高等學校學報
석유화공고등학교학보
JOURNAL OF PETROCHEMICAL UNIVERSITIES
2014年
3期
81-86
,共6页
三元复合驱%复合碱%界面张力%黏度%驱油效率%非均质模型
三元複閤驅%複閤堿%界麵張力%黏度%驅油效率%非均質模型
삼원복합구%복합감%계면장력%점도%구유효솔%비균질모형
Alkaline-surfactant-polymer flood%Composite alkali%Interfacial tension%Viscosity%Oil displacement efficiency%Heterogeneous model
针对大庆北一区断东二类油层强碱三元复合驱现场试验，分析了试验区中心井伴生气中 CO2含量的变化趋势以及和三元液的化学作用规律，研究了氢氧化钠和碳酸钠复配三元体系的界面张力、黏度特性、驱油效率。其中 HPAM质量浓度2000 mg/L、重烷基苯磺酸盐质量分数0.3%、氢氧化钠质量分数0.8%、碳酸钠质量分数0.4%组成的复合碱三元体系(简称 F21)综合性能较优。复合碱(F21)三元体系2 h的平衡界面张力低至6.5×10-3 mN/m；复合碱(F21)三元体系的黏度比强碱体系增加28.5%，且三元体系黏度随复合碱强度减弱而升高；复合碱(F21)三元体系比水驱采收率提高24.4%，和强碱体系化学驱采收率接近；非均质模型化学驱采收率比均质模型降低2.4%。
針對大慶北一區斷東二類油層彊堿三元複閤驅現場試驗，分析瞭試驗區中心井伴生氣中 CO2含量的變化趨勢以及和三元液的化學作用規律，研究瞭氫氧化鈉和碳痠鈉複配三元體繫的界麵張力、黏度特性、驅油效率。其中 HPAM質量濃度2000 mg/L、重烷基苯磺痠鹽質量分數0.3%、氫氧化鈉質量分數0.8%、碳痠鈉質量分數0.4%組成的複閤堿三元體繫(簡稱 F21)綜閤性能較優。複閤堿(F21)三元體繫2 h的平衡界麵張力低至6.5×10-3 mN/m；複閤堿(F21)三元體繫的黏度比彊堿體繫增加28.5%，且三元體繫黏度隨複閤堿彊度減弱而升高；複閤堿(F21)三元體繫比水驅採收率提高24.4%，和彊堿體繫化學驅採收率接近；非均質模型化學驅採收率比均質模型降低2.4%。
침대대경북일구단동이류유층강감삼원복합구현장시험，분석료시험구중심정반생기중 CO2함량적변화추세이급화삼원액적화학작용규률，연구료경양화납화탄산납복배삼원체계적계면장력、점도특성、구유효솔。기중 HPAM질량농도2000 mg/L、중완기분광산염질량분수0.3%、경양화납질량분수0.8%、탄산납질량분수0.4%조성적복합감삼원체계(간칭 F21)종합성능교우。복합감(F21)삼원체계2 h적평형계면장력저지6.5×10-3 mN/m；복합감(F21)삼원체계적점도비강감체계증가28.5%，차삼원체계점도수복합감강도감약이승고；복합감(F21)삼원체계비수구채수솔제고24.4%，화강감체계화학구채수솔접근；비균질모형화학구채수솔비균질모형강저2.4%。
For the industrial field test of ASP flooding containing NaOH in second-class reservoir which located in the east fault of Daqing north No.1 Zone,the variation trend of CO2 content in the center oil well associated gas and the chemical interaction law of ternary system was analyzed.Interfacial tension,viscosity and oil displacement efficiency of the composite ternary system which consisted of sodium hydroxide and sodium carbonate were studied.Ternary system of composite alkali (F21 for short)which was composed of HPAM concentration of 2 000 mg/L,HABS mass fraction of 0.3%,sodium hydrate mass fraction of 0.8% and sodium carbonate mass fraction of 0.3% had a better comprehensive performance.Its equilibrium interfacial tension at 2 h was as low as 6.5×10-3 mN/m.Its viscosity increased by 28.5% compared with strong alkali system and rised as intensity of composite alkali decreased.Recovery ratio of ternary system of composite alkali (F21 for short) improved by 24.4% compared with water flooding which was similar with strong alkali system chemical flooding.Recovery ratio of heterogeneous model chemical flooding decreased by 2.4% compared with homogeneous model.
