高温高粘胶凝酸体系合成及性能评价  

Synthesizing and capability estimation of high-temperature and high-viscosity gelled acid system

作　　者：李爱山[1] 鞠玉芹[2] 孙秀芳[3] 仲岩磊[2] 黄波[2] 

机构地区：[1]中国石油大学石油工程学院,山东东营257061 [2]中国石化胜利油田分公司采油工艺研究院,山东东营257000 [3]东营职业学院工业工程系,山东东营257091

出　　处：《石油学报》2007年第2期90-93,共4页Acta Petrolei Sinica

基　　金：中国石化股份公司"十五"科技攻关项目(P03029)"碳酸盐岩裂缝性油藏复合酸压技术研究与应用"部分成果

摘　　要：为了适应富台油田和渤深6井区深层、高温碳酸盐岩油藏酸化压裂改造的需要,通过反相乳液聚合反应合成了一种新型的YLG-1高分子共聚物,将该共聚物溶解到盐酸中,可以形成一种新型的耐高温胶凝酸体系。室内实验表明,该胶凝酸体系在质量分数为25%的盐酸中,当温度达到170℃时,其粘度值仍大于25mPa.s。利用YLG-1胶凝剂配制的胶凝酸体系,可以有效地提高酸液的粘度,降低胶凝酸岩与碳酸盐岩岩心的反应速度,提高酸刻蚀裂缝的穿透深度。在富台油田和渤深6井区碳酸盐岩油藏的酸化压裂中取得了较好的应用效果。A new gelling agent YLG-1 for acid treatment and fracturing in Futai and Boshen-6 oilfields with high temperature and big depth was synthesized. The experiment shows that the viscosity of the gelled acid compounded by 25 % hydrochloric acid and 1.5 % YLG-1 gelling agent exceeds 25 mPaos at 170℃. The gelled acid system prepared with YLG-1 gelling agent could provide high-viscosity acid, reduce fluid loss and reaction rate,and generate deeper fracture penetration when it was used in the acid treatment and fracturing in carbonate reservoirs of Futai and Boshen-6 oilfields. Good results have been obtained.

关 键 词：YLG-1胶凝剂 胶凝酸体系 酸化压裂 碳酸盐岩 富台油田 渤深6井区 

分 类 号：TE34[石油与天然气工程—油气田开发工程]