【摘要】 在甲苯溶液中将苯乙烯马来酸酐丙烯酸高级醇（正十八碳醇、正十八至二十四碳混合醇）酯三元共聚物（ＳＭＡＥ）分别用正十八碳醇、正十八至二十四碳混合醇进行醇解，用正十八胺进行胺解，得到了一系列新聚合物，其红外光谱和凝胶渗透色谱法数据表明，醇解和胺解均发生在酸酐单元上。这些醇解和胺解衍生物对所测试的４种原油的降凝性能均比原始ＳＭＡＥ共聚物好，５００ｐｐｍ醇解和胺解衍生物使原油的凝固点下降２０－３１℃。更多还原

【Abstract】 The apparent shear viscosity μ v and effective viscosity μ ef in core flow for a modified polyacrylamide, PAM104A, solution of concentration 600 and 1000 ppm are determined and plotted verse apparent linear flow rate U (and shear rate , real or equvalent). μ ef is obtained from experimental values of resistance and residual resistance factors by using an aproximate equation. The difference between μ ef and μ v values denotes the elastic effect. Suggesting radial flow in reservoirs and using Darcys equation, flow pressure P i and flow rate U i (and eq ) of the polymer solution at distance R i from the polymer injection well borehole are determined. It is shown that at the experimental conditions the highest value of μ ef (and thus the most notable elactic effect) is observed where R i≤0.5m and the more the R i the higher the ΔP i(=P i P w where P w P i in borehole bottom) is and ΔP i becomes significant where R i is more than some 30m.更多还原