针对中原油田地层水矿化度高、温度高、井深的情况 ,研制了泡沫排水起泡剂NJS。NJS分子中碳链长度为12— 14,含有 OCC ,C =N和SO3 Na 基团。NJS在高矿化度 (1.0× 10 5mg/L)、高凝析油含量 (体积分数2 0 % )气井采出水中 ,在 90℃高温下有良好的起泡性能 ,与大多数常用缓蚀剂配伍。介绍了NJS的现场使用工艺及在两口气井中试用NJS进行泡沫排水采气的效果 In view of the high salinity, high temperature and well depth of formation water in Zhongyuan Oilfield, a foam drainage foaming agent NJS was developed. The NJS molecule has a carbon chain length of 12-14 and contains OCC, C = N and SO3Na groups. NJS has good foaming property at high temperature of 90 ℃ in the production water with high salinity (1.0 × 10 5 mg / L) and high condensate content (20% by volume). Compared with most commonly used corrosion inhibitors Agent compatibility. Describes the field use process of NJS and the effect of using NJS for foam drainage and gas recovery in two gas wells