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利用试验环道对胜利新滩含水65%稠油的W/O乳状液采用转相乳化法形成O/W乳状液的性质进行测试。3种不同方案的试验结果表明:在相同条件下,环道试验配制的乳状液液滴尺寸分布范围大,稳定性较差;在其他条件不变时,环道流量和乳化剂加量对乳状液的动态稳定性影响较大;流量越大,O/W乳状液的动态稳定性越好;在一定范围内,乳化剂加量越大,O/W乳状液稳定性越好。在管流条件下,形成O/W乳状液和乳化剂在管壁吸附均可降低管输摩阻,乳状液的稳定性是影响管道压降的主要因素。温度变化对O/W乳状液的表观粘度影响不大,同时,加剂0.8mg/g形成的O/W乳状液停输再启动不存在困难。
The W / O emulsion of Shengli Xintan, a 65% heavy oil, was tested by using the experimental circuit. The properties of the O / W emulsion formed by the phase inversion emulsification method were tested. The test results of three different schemes show that the droplet size distribution of the emulsion prepared by the loop test is large and the stability is poor under the same conditions. When the other conditions are not changed, the flow rate of the loop and the amount of emulsifier added to the emulsion The dynamic stability of liquid is more affected. The larger the flow rate is, the better the dynamic stability of O / W emulsion is. In a certain range, the greater the emulsifier dosage, the better the stability of O / W emulsion. In tube flow conditions, the formation of O / W emulsion and emulsifier in the tube wall can reduce the friction tube resistance, the stability of the emulsion is the main factor affecting the pipe pressure drop. The change of temperature has little effect on the apparent viscosity of O / W emulsions. At the same time, it is not difficult to stop and restart the O / W emulsions formed by adding 0.8mg / g.