摘要
采用聚碳酸酯核孔滤膜对驱油聚合物聚丙烯酰胺(PAM)过滤因子的测试方法进行了研究。利用SEM等方法分析了滤膜孔径与相对分子质量的匹配关系及配制水矿化度对测试过滤因子的影响。实验结果表明,对同一孔径的滤膜,随PAM相对分子质量的增大,过滤时间延长。测试PAM过滤因子时,孔径3μm的滤膜适于相对分子质量小于28×106的PAM;相对分子质量大于28×106的PAM使用孔径10μm的滤膜较适宜。相对分子质量为18×106的PAM在不同矿化度下通过孔径3μm的滤膜均可测得过滤因子。对于相对分子质量为35×106的PAM,当配制水矿化度大于300 mg/L时,孔径3μm的滤膜已不适用;如采用孔径10μm的滤膜,当配制水矿化度小于1 000 mg/L或当矿化度为30 000 mg/L时,均可测得过滤因子。在油藏的实际地质条件下进行聚合物过滤因子测试,可更真实地反映聚合物溶液的溶解性与注入性。
A test method for fi lter factors（Fr） of the fl ooding polymer polyacrylamide（PAM） was studied with polycarbonate nuclear pore fi lms as fi lter membranes. The relationship between the pore diameter of the filter membranes and relative molecular mass（Mn） of PAM,and the effect of total dissolved solid（TDS） of prepared brine on testing the fi lter factors were investigated by means of SEM. The results indicated that,when the pore diameter of the fi lter membranes was unchanged,the time of PAM fl owing out prolonged with the increase of Mn. The fi lter membrane with pore diameter 3 μm was suitable for PAM with Mn 28×106. The fi lter membrane with pore diameter 10 μm was suitable for PAM with Mn more than 28×106. Fr of PAM with Mn 18×106 could be measured under different TDS when the filter membrane with pore diameter 3 μm was used. When Mn of PAM was 35×106and TDS was more than 300 mg/L,the fi lter membrane with pore diameter 3 μm could not be used for measuring its Fr. But when the fi lter membrane with pore diameter 10 μm was used and TDS was 30 000 mg/L or less than 1 000 mg/L,Fr of PAM with Mn 35×106 could be measured.
出处
《石油化工》
CAS
CSCD
北大核心
2015年第2期241-245,共5页
Petrochemical Technology
