液相色谱法测试HPAM浓度的影响因素分析

Inference Facture Study of HPAM Determination by Liquid Chromatography

关 丹娄清香陈素萍 帕提古丽·麦麦提

GUAN Dan[] LOU Qing-Xiang CHEN Su-Ping PATIGULI Maimaiti

对油田生产过程中采用液相色谱法检测注入液及采出液中部分水解聚丙烯酰胺（HPAM）浓度的可靠性进行了分析。考察了HPAM相对分子质量、水解度、生产批次、剪切时间、配液用水及表面活性剂KPS等因素对液相色谱法测定HPAM浓度的影响。结果表明，HPAM水解度、生产批次及配液用水对测试结果的影响较大。水解度越大，标准工作曲线斜率越小；2011年产品的标准工作曲线斜率小于2009年产品；HPAM污水样的标准工作曲线斜率大于HPAM清水样。为保证测试结果的精准度，应对不同的样品建立相应的标准曲线。通过对样品稀释可有效削减配液用水对测试结果的影响。聚合物相对分子质量、剪切时间、0~0.3% KPS对测试结果的影响不明显。

The determining reliability of partially hydrolyzed polyacrylamide (HPAM) concentration which existed in injection fluid and produced fluid was analyzed by liquid chromatography (HPLC) in the process of oilfield production. The influence factors of concentration determination by HPLC, including relative molecular mass, degree of hydrolysis, and production batch of HPAM, shearing time, solvent and surfactant KPS, was studied. The experiment results showed that hydrolyzing degree and production batch of HPAM, and water preparing HPAM solution had a significant impact on the test results. The greater degree of hydrolysis, the smaller slope of standard working curve was. The standard working curve slope of the production in 2011 was less than that of the production in 2009. The standard working curve slope of HPAM sewage solution was bigger than that of HPAM clean water solution. To make sure the accuracy of results, corresponding standard curve according to different sample should be built. Diluting the sample could reduce the influence of clean water and waste water on test result. The factors such as relative molecular mass of HPAM, shearing time and 0—0.3% KPS had a little effect on test results.