抗南堡高温、稠油NP-1型起泡剂室内评价研究

Indoor Evaluation of NP-1 Foamer of High Temperature Resistance and Thickened Oil in Nanpu Area

NP-1是针对南堡气井高温、含稠油等特征研发的一种新型泡沫排水起泡剂。将NP-1与现场常用XHY-4、UT-5B起泡剂进行抗南堡高温、高压、稠油室内对比试验,结果发现三类起泡剂与南堡液样配伍性好,NP-1起泡剂可抗180℃高温,压力变化对其泡沫稳定性影响小;老化试验表明NP-1起泡剂在140℃温度条件下持续24小时仍能保持良好的起泡性;体积分数为3%的NP-1抗油性能最佳,此浓度下可抗20%体积分数的南堡稠油;NP-1主要成分为具有长碳链、多支链的全氟辛基甜菜碱,使得泡沫稳定性好,携液量明显高于另两类起泡剂。

NP-1foamer was a new foaming agent for gas drainage which was developed for using in Nanpu gas wells with high temperature and thickened oil.An indoor experiment of high temperature,high pressure and thickened oil was carried out by comparing NP-1foamer with XHY-4and UT-5Bfoamers.The results indicate that the three foamers have good compatibility with liquid sample from Nanpu Area,NP-1is high temperature at 180℃,and its foam stability is less affected by the change of pressure.Aging experiments show that NP-1can still maintain good foamability at140℃for 24 h.The best anti-oil volume concentration of NP-1is 3%,at the concentration,it can resist to Nanpu thickened oil with volume fraction of 20%.The main components of NP-1is perfluorooctane betaine with long carbon chain and multi branched chain,which makes the foam with good stability,and its liquid carrying volume is significantly higher than the other two foaming agents.