中文摘要：

高温高压下,稠油与CO2、N2或CH4等气体之间的界面张力数据,具有十分重要的理论和实用价值.在不同温度和压力下,采用ADSA方法（对称液滴形状分析法）测量了渤海稠油与CO2、N2和CH4体系的平衡界面张力.实验结果表明,在不同温度和压力下,渤海稠油与CO2、CH4和N2体系的界面张力由小到大的顺序依次为CO2、CH4和N2.对于稠油与CO2体系,当压力低于CO2临界压力（7.39 MPa）时,升高温度对界面张力影响不大;当压力高于CO2临界压力时,升高温度对界面张力影响明显变大.对于稠油与CH4体系,由于高温蒸馏的作用造成150cc时界面张力要高于100℃,而温度对稠油与N2体系界面张力的影响不明显.增大压力可使稠油与CO2、CH4和N2体系的界面张力分别降低60％ ～70％、40％ ～ 50％和20％ ～30％.

英文摘要：

There are very valuable theoretical and practical values for the interfacial tension （IFT） data between the heavy oil and CO2, N2 and CH4 under the conditions of high temperatures and high pressures. The IFTs be- tween Bohai heavy oil and above gases are measured under different temperatures and pressures by means of ADSA （ Ax Symmetric Drop Shape Analysis） method. The experimental results show that the sequence of the IFTs for the stated systems is CO2, CH4 and N2 in ascending order. For the system between the heavy oil and CO2, when the pressure is lower than the critical pressure of CO2 （7.39 MPa） , the effects of the temperature increment on the in- teffaeial tension is not so serious ; however, when the pressure is larger than the critical pressure of CO2 , the results are just opposite. For the system between the heavy oil and CH4 , the interracial tension at 150 ℃ is larger than that at 100 ℃ due to the effects of the high-temperature distillation, while the effects of the temperature on the system between the heavy oil and N2 are not obvious. The increments of the pressures can seperately reduce the above IFTs by 60%-70% tbr CO2, 40%-50% for CH4 and 20%-30% for N2.