摘要
本研究表明,木质素磺酸钠与苯酚、甲醛反应后。可在适当条件下与聚丙烯酰胺(PAM)交联,形成一种新型的用于碱性地层的凝胶堵水剂。该堵水剂的适宜配方为:改性木质素磺酸钠浓度为4.0%～4.5%,PAM浓度为0.4%～0.5%,pH值为9～12.在70～90℃条件下.胶凝时间为9～60小时。岩心实验表明,该堵剂具有强度高,抗盐性和热稳定性好,易解堵等显著特点。
Having reacted with phenol and formaldehyde, Sodium Lignosulfonate can crosslink with polyacrylamide(PAM) under proper condition, and form a gel which is suitable for subterranean plugging. The proper gel-forming composition is: modified sodium lignosulfonate 4～4.5 per cent (wt), PAM 0.4～0.5 per cent (wt). pH 9～12. The gelatinization time ranges between 9 to 60 hours at temperature 70～90℃. Rock core experiments indicate that the plugging agent has some outstanding characteristics, such as, high intensity, good salt resistance and heat steadiness and easiness of being plugging solved.
出处
《西安石油学院学报》
1990年第3期55-59,共5页
Journal of Xi'an Petroleum Institute
关键词
本质素磺酸钠
堵水剂
改性
凝胶
sodium lignosulfonate
gel
gelatinization time
water plugging agent
