高温高黏胶凝酸PDA合成及性能评价  

SYNTHESIZING AND PERFORMANCE EVALUATION OF GELLED ACID PDA WITH HIGH TEMPERATURE AND HIGH VISCOSITY

作　　者：龚蔚 蒲万芬 舒昌建[2] 曹建[3] 徐益[2] 彭陶钧 

机构地区：[1]油气藏地质及开发工程国学重点实验室 [2]四川石油管理局技术检测中心 [3]西南油气田公司川西北气矿

出　　处：《钻采工艺》2008年第2期107-109,共3页Drilling & Production Technology

摘　　要：以碳酸岩油藏的高温、深井的酸化增产为切入点,从提高胶凝酸液体系抗温性、配伍性和溶解性以及减少地层伤害等实际应用性能出发,采用阳离子单体甲基丙烯酰氧乙基三甲基氯化铵(DMC)、丙烯酰胺(AM)为原料,合成了新型酸液胶凝剂PDA。室内实验表明新型胶凝剂PDA具有良好的热稳定性和剪切稳定性,缓速性能好,将通常酸液体系中聚合物胶凝剂含量从2.5%降到1.0%,大大减少了聚合物的用量,从而减小了酸化过程中聚合物残渣对储层造成的潜在伤害,具有较好的开发前景。In order to improve temperature resistant,compatibility,solubility of gelled acid system and reduce potential reservoir damage,taking methylacryloylOxy-ethyltrim-ethyl ammonium chloride(DMC)and acrylamide(AM)as raw material synthesized a new kind of acid fluid gelling agent PDA.The experimental results showed that PDA have good properties in thermal stability,shear thinning,corrosion inhibition and salts resistant,good compatibility with other kinds of acid fluids additives.The content of polymer gelling agent was reduced from 2.5 wt % to 1.0 wt % in common acid fluid,so the potential damage of polymer residues to reservoir was also reduced.

关 键 词：碳酸岩 高温 胶凝剂PDA 热稳定性 剪切稳定性 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]