【摘要】 新滩油田KD18油水混合液一般呈W /O型乳状液 ,其乳化水含量约为 5 0 %～ 6 0 % ,粘度高 ,集输难度大 ,必须对其进行降粘处理。针对这种油水混合液的特性及外输现状 ,提出了在高粘W /O型乳状液中直接加剂转相、分散、乳化的降粘新方法 ,开发出了KD18稠油W /O型乳状液的高效降粘剂。研究表明 ,在一定条件下 ,KD18稠油W /O型乳状液在 5 0℃、5 1s- 1下的表观粘度可由 70 0 0～ 10 0 0 0mPa·s降到 10 0mPa·s以内 ,降粘率在 98%以上 ,为高粘W /O型乳状液提供了有效的降粘途径。更多还原

【Abstract】 The mixture of KD18 viscous crude oils and associated water in Xintan Oilfield commonly is water -inoil emulsion, which bond water contains about 50%～60%. The viscosity reduction must be conducted due to the high apparent viscosity. In allusion to the properties of the mixture and the actualities of the mixture’s transportation,a new method of viscosity reduction for this emulsion by chemicals adding to make its phase conversion, dispersion and emulsification is presented. Based on this method, some high-effective viscosity-reducing agents are developed. The study results show that the apparent viscosity of KD18 viscous crude oils at 50℃ and 51 s -1 can be reduced from 7000～10000 mPa·s to less than 100 mPa·s and reducing rate of viscosity is more than 98%,which provides an effective way to heavy viscous water-in-oil emulsion in reducing its viscosity.更多还原