ZM-FL12PV交联改性聚乙烯醇降失水剂的研究  

The study of crosslinking modified PVA fluid loss agent ZM-FL12PV

作　　者：李鹏飞 LI Pengfei(Zhongman Petroleum and Natural Gas Group Co.,Ltd.,Shanghai 201306,China)

机构地区：[1]中曼石油天然气集团股份有限公司,上海201306

出　　处：《石油化工应用》2022年第11期111-114,共4页Petrochemical Industry Application

摘　　要：针对物理交联聚乙烯醇PVA降失水剂存在适用温度区间较窄且不抗盐的情况,研究以聚乙烯醇(PVA)为主剂,以戊二醛为交联剂,通过化学交联的方式合成改性PVA类降失水剂。通过调整水溶液为酸性条件,使用交联剂戊二醛在60℃条件下与PVA形成共价键交联反应合成而来。合成产物相对分子质量在3.5×105~6.5×105,并含有少量杀茵剂和稳定剂。通过实验研究结果表明,加入7%~15%(BWOC)化学交联PVA降失水剂可使G级油井水泥浆在75~120℃的条件下,API滤失量控制在50 mL以内。In view of the narrow temperature range and no salt resistance of physical PVA,the study synthesized modified PVA by polyvinyl alcohol(PVA) as the main agent, glutaraldehyde as the cross-linking agent. It was synthesized by adjusting the aqueous solution to the acid condition and using the cross-linker glutaraldehyde to form covalent bonds with PVA at 60 ℃. The resultant products had a relative molecular mass of between 3.5 ×10~5~6.5×10~5 and contained a small amount of chloricides and stabilizers. The results show that fluid loss agent can be control the API filter loss within 50 mL at 75~120 ℃ by adding 7%~15%(BWOC) chemical crosslinked PVA.

关 键 词：交联聚乙烯醇 降失水剂 交联 滤失量 

分 类 号：TE256.6[石油与天然气工程—油气井工程]