气井排水采气用纳米泡排剂研究及性能评价  

Research and Performance Evaluation of Nano Foam Drainage Agent for Gas Well Drainage and Gas Production

作　　者：李晓玲[1] LI Xiaoling(Huanqing Oil Production Plant of Yumen Oilfield,Jiuquan Gansu 735000,China)

机构地区：[1]玉门油田环庆采油厂,甘肃酒泉735000

出　　处：《当代化工》2024年第6期1368-1372,共5页Contemporary Chemical Industry

摘　　要：泡沫排水采气是含水天然气井开采中后期较为常用的一项技术措施。为了进一步提高页岩气井排水采气用泡排剂的泡沫稳定性能,通过大量室内实验,优选出性能较为优良的起泡剂BY-1和稳泡剂HW-3,并通过引入纳米颗粒来提高泡沫体系的稳定性能,研究出一种适合页岩气井排水采气用纳米泡排剂体系,评价了体系的耐温、耐盐和耐油性能。结果表明:纳米泡排剂体系的耐温性能较好,随着老化温度的增高,体系的起泡体积和泡沫半衰期均先增大后减小,当老化温度为120℃时,起泡体积和泡沫半衰期仍能达到450 mL和330 min;纳米泡排剂体系的耐盐性能较好,随着矿化度的增大,体系的起泡体积逐渐减小,泡沫携液率先减小后增大,当盐水矿化度达到1.0×10^(5)mg·L^(-1)时,体系的起泡体积和泡沫携液率仍能达到425 mL和80.6%;纳米泡排剂体系的耐油性能较好,随着煤油体积分数的增大,体系的起泡体积和泡沫携液率均逐渐减小,当煤油体积分数为30%时,体系的起泡体积和泡沫携液率仍能达到420 mL和50.7%。Gas production by foam drainage is a common technical measure in the middle and later period of water bearing natural gas well development.In order to further improve the foam stability of foam drainage agent for shale gas well drainage and gas production,the foaming agent BY-1 and foam stabilizer HW-3 with better performance were selected through a large number of indoor experiments,and the stability of the foam system was improved by introducing nano particles.A nano foam drainage agent system suitable for shale gas well drainage and gas production was developed,and the temperature resistance,salt resistance and oil resistance of the system were evaluated.The results showed that the temperature resistance of the nano foam discharge agent system was good.With the increase of aging temperature,the foaming volume and half life of foam of the system first increased and then decreased.When the aging temperature was 120℃,the foaming volume and half life of foam could still reach 450 mL and 330 min;the salt resistance of nano foaming agent system was good.With the increase of salinity,the foaming volume of the system gradually decreased,and the liquid carrying capacity of foam decreased first and then increased.When the salinity of brine reached 1.0×10^(5)mg·L^(-1),the foaming volume and liquid carrying rate of foam could still reach 425 mL and 80.6%;the nano foaming agent system had good oil resistance.With the increase of kerosene volume fraction,the foaming volume and foam liquid carrying rate of the system gradually decreased.When the kerosene volume fraction was 30%,the foaming volume and foam liquid carrying rate of the system could still reach 420 mL and 50.7%.

关 键 词：页岩气井 排水采气 起泡剂 稳泡剂 纳米颗粒 

分 类 号：TQ047[化学工程] TE377[石油与天然气工程—油气田开发工程] TE39