稠油井空心杆泵上掺稀油降粘举升工艺设计

针对鲁克沁油田稠油生产井井筒流体流动困难、举升效果差的问题，进行了稠油、稀油及不同稠稀比混合物的粘温关系试验，建立了不同稠稀比混合物的粘度计算相关式和空心杆泵上掺稀油降粘举升工艺参数设计模型。应用结果表明，掺稀油对鲁克沁油田稠油具有明显的降粘效果，所建立的空心杆泵上掺稀油降粘举升工艺及举升参数设计模型具有较高的准确性。通过优化设计，平均单井系统效率提高了4．53％，平均单井产油量增加1．905t／d，累计增油3780t，取得了很好的开采效果。

A Lifting Technological Design for Viscosity Break by Mixing Light Hydrocarbon in Hollow Rod in Heavy Oil Well

In the Lukeqin Oilfield, it is very difficult for wellbore fluids in heavy-oil production wells to have them flowed and lifted. Regarding this scenario, heavy oil, light oil, and their mixture with different ratio have been tested with the correlation between viscosity and temperature. Formulas have also been developed to calculate viscosity of mixtures with different ratio. In addition, a lifting model has been established to determine operating parameters for the technique of viscosity break by mixing light hydrocarbons. Application resuits indicate that this technique performs remarkable viscosity break effects in the Lukeqin Oilfield, and both this lifting technique and this model behave higher accuracy. After optimization, the single well system increases in efficiency about 4.53%, increases oil production about 1.905t/d, totally increases oil production 3 780 t, achieves good exploitation effects.