石油与天然气化工2025，Vol.54Issue(2)：100-106,7.DOI:10.3969/j.issn.1007-3426.2025.02.014
木质素胺化改性及耐温耐盐堵水凝胶的制备及应用
Preparation and application of temperature and salt-resistant water-plugging gel based on amine-modified lignin
摘要
Abstract
Objective In order to solve the problem that traditional polymer water plugging gel is difficult to adapt to high temperature and high salt environment,a temperature and salt-resistant water-plugging gel is prepared from phenylpropane lignin by amination modification and crosslinking curing.Method The effects of amination modification degree of lignin,amount of crosslinking agent,the content of lignin amine and curing temperature on the physical strength of the gel were investigated;the aging-resistance of lignin amine water-plugging gel was evaluated,and the water-plugging application experiment was carried out in the field.Result The results showed that when the mass ratio of lignin to amine was 1∶2,the dosage of polyethylene glycol diglycidyl ether(PEGDGE)was 20 wt%,content of lignin amine was 15 wt%and the temperature was 150℃,the curing time was 5 h;the compression stress of cured gel block was 597 kPa after aging for 90 days with 210×103 mg/L mineralized salt water,and the volume retention rate of gel was 89.7%.The on-site application results showed that when the lignin amine water-plugging system with optimal ratio was injected into the formation environment with 140℃and 210×103 mg/L mineralization,the water content of the oil recovery decreased from 99.0%before injection to 58.5%after injection,and the maximum daily crude oil production was 13.8 t.The adequate action time could reach 90 days.Conclusion As a waste material,lignin has potential application prospects in high-temperature and high-salt oil fields after modification.关键词
木质素/胺化改性/聚乙二醇二缩水甘油醚/油田堵水剂/耐温耐盐性Key words
lignin/amination modification/polyethylene glycol diglycidyl ether(PEGDGE)/water plugging agent/temperature and salt-resistance引用本文复制引用
亢智,马清杰,耿绍,石鑫,李生林,王克彦,温洋兵..木质素胺化改性及耐温耐盐堵水凝胶的制备及应用[J].石油与天然气化工,2025,54(2):100-106,7.基金项目
采油用调堵材料研究与应用-耐170℃超高温有机堵剂研发与应用项目(34400007-22-ZC0613-0016) （34400007-22-ZC0613-0016）
