聚丙烯酰胺/酚醛弱凝胶体系调剖堵剂的优化  

THE OPTIMIZATION RESEARCH ON THE PROFILE AGENT OF HPAM/PHENOL-FORMALDEHYDE SYSTEM

作　　者：秦义[1] 徐方向[1] 刘志辉[2] 卞龙[1] 

机构地区：[1]长江大学石油工程学院,湖北武汉430100 [2]西南石油大学材料科学与工程学院,四川成都610100

出　　处：《精细石油化工》2013年第5期30-32,共3页Speciality Petrochemicals

摘　　要：针对靖安油田地层渗透率差异大,油藏难采且产量递减快,出水多等特点,对聚丙烯酰胺(聚丙烯酰胺)-酚醛调剖剂展开了优化研究以用于该区块调剖增油降水。向HPAM/有机酚醛体系中引入实验室自制的复合辅助交联剂,设计了一组正交实验研究该体系各组分对凝胶黏度的影响。经优化后,该体系的最优配方为:0.15%HPAM+0.03%乌洛托品+0.025%间苯二酚+0.06%复合辅助交联剂+2.5%氯化铵。通过模拟油藏实验证明:该体系具有较好的抗盐性,且凝胶结构稳定。在矿化度为80g/L,60℃条件下放置30d,凝胶无脱水现象,黏度为30Pa·s。HPAM/phenol-formaldehyde gel system is researched to meet the effect of improving oil re- covery and reducing water content in Jing An oilfield, which has problems as large differences in for- mation permeability, difficult recovery reservoir, fast production declining and high water content. The self-made compound auxiliary erosslinking agent is added in the HPAM/phenol-formaldehyde system. And every factor in this system is studied through a set of orthogonal experiments. The opti- mized recipe is as follows. 0.15% HPAM ＋ 0.03% Methenamine ＋ 0. 025% Resorcinol ＋ 0.06% Compound Auxiliary Crosslinking Agent ＋ 2.5% Ammonium Chloride. The simulations of reservoir experiments demonstrate that this weak gel system has a better brine tolerance and stable structure. When it is placed in the circumstance of 80 g/L salinity at 60 C for 30 d, the weak gel keeps stable, and its viscosity is 30 Pa s.

关 键 词：弱凝胶 深部调剖 最优配方 黏度 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]