防垢剂XCZ-1的合成及其性能评价研究

结垢对于油气田开采、注水及排水工艺的实施危害极大。碳酸盐垢是油气田开发生产中最常见的无机垢,研制新型碳酸盐垢防垢剂,有极重大的理论和实际意义。本文采用环己酮、乙二胺、甲醛以及亚磷酸为原料,按照一定的配比通过两次曼尼希反应制备出胺甲基膦酸化醛、酮、胺缩聚物防垢剂XCZ-1。研究了反应条件(反应时间、反应温度、反应物配比等)对产品防垢性能的影响;采用红外光谱法表征了产品的分子结构;探讨了防垢剂加量、防垢温度、防垢时间、溶液pH值、溶液矿化度等因素对产品防碳酸钙垢性能的影响,以及防垢剂对碳酸镁垢、碳酸钡垢的防垢性能。

Research on synthesizing the scale inhibitor XCZ-1 and performance evaluation of XCZ-1

Scale formation does great harm to the implementation of the technology of waterflooding and dewatering in the oil-gas field development. Carbonate scale is the most common inorganic scale during the production operation. There is great theoretical and practical significance in developing advanced carbonate scale inhibitor. Cyclohexanone、ethylene diamine、formaldehyde and phosphite are adopted to synthetise the condensed polymer scale inhibitor in a certain proportion by twice Mannich reaction. The effect of scale inhibition performance of the polymer inhibitors on different synthetic conditions(reaction time,reaction temperature,reactant ratio etc.) are discussed. The molecular structures of the polymer inhibitors are ascertained through infrared absorption spectrum method. The functioning factors of scale inhibition performance about carbonate (calcium carbonate、magnesium carbonate and barium carbonate) scale such as the dose of the scale inhibitors, evaluation temperature and time, the pH of the liquor system and the salinity are discussed.