【摘要】 针对海上油田的开发特点,将采用分散聚合方法合成的聚丙烯酰胺乳液作为交联聚合物,研制了一种速溶环保型调剖体系。该调剖体系与埕岛油田注入海水配伍性良好,在室温下搅拌15min就能充分溶解。以成胶时间和成胶强度为指标,对调剖体系的配方进行优化,并考察了聚丙烯酰胺乳液和交联剂加量、温度、矿化度和pH值等因素对堵剂性能的影响。试验结果表明,该速溶调剖体系成胶时间3～8d可控,成胶强度较高,热稳定性较好,抗剪切能力较强,现场施工无需调节pH值,是一种选择性堵剂,其综合性能可满足海上油田施工的要求。更多还原

【Abstract】 The dissolving rate of polyacrylamide powder is very slow,and the polyacrylamide inverse emulsion has better dissolution,while it contains a lot of organic solvent which is very easy to cause fire and environment pollution to marine. According to the development characteristics of offshore oilfields,a new-type instant profile control system was developed. This system has a good compatibility with the injection fluids of Chengdao Oilfield. At standard temperature,it can fully dissolved in 15 minutes. Using gelation time and strength as index,the formula was optimized,and impact of addition,temperature,pH and salinity,etc.were investigated. The result of experiment indicates that the gelation time of instant profile control system is adjustable ranging 3 to 8 days,and the strength is quite high. It is unnecessary to regulate the pH value. And the plug agent is a selective system. The comprehensive performance of the system meets the demands of on-line construction for offshore oilfields.更多还原