无破胶剂聚合物压裂液的研究  

Investigation of fracturing without internal breakers polymer

作　　者：蒋羿黎[1] 廖刚[1] 

机构地区：[1]西南石油大学化学化工学院,四川成都610500

出　　处：《应用化工》2007年第3期240-242,共3页Applied Chemical Industry

基　　金：四川省重点学科建设项目(SZD0413)

摘　　要：在合成了由短链分子聚合和交联的新型无破胶剂压裂液的基础上,考察了增稠剂浓度、交联剂用量对压裂液性能的影响,评价了新型无破胶剂压裂液的综合性能。结果表明,当增稠剂浓度在2.0%以上,交联剂浓度增加,液体的粘度迅速增大;无破胶剂压裂液在170 s-1的剪切速率下120 min后仍具有较好的剪切稀释性;新型无破胶剂压裂液与常规的胍胶相比,同样具有滤失量低的特点,在90℃下,压裂液仍有较好的携砂能力;其还具有表面活性剂清洁压裂液无残渣、易返排的特点。此外,该压裂使用方便,还可再生重复使用。A neo-type fracturing fluid that requires no internal breakers has been synthesized. The fracturing fluid is composed of short chain molecule polymer and cross-linking agent. This paper reviews the influence of the concentration of thickening agent and the quantity of the cross-linking agent has on the performanee of fracturing fluid. Then it evaluates the all round performance of the neo - type fracturing fluid. Finally,the paper reaches the conclusion that, the dense of thiekening agent is above 2.0%, the liquid viscosity is prompt enhanee;the neo-type fracturing fluid has fairly good shearing dilntion on the eondition of 120 min cutting time and the 170 s^-1 shear rate;it also has the eharaeter of lower filter loss amounts as same as that of guar; under 90℃, this neo-type fracturing fluid has fairly good capability of suspending sand ; this neo-type fracturing fluid without internal breakers has the merits of easily controlled rheological properties, and low filtration as the conventional guar-based fracturing fluid ; it also has the traits of residum free and flow-back easily as the surface active agent cleaning fracturing fluid;besides, this neo-type fracturing fluid without internal breakers is easily used and can be regenerated for recycle.

关 键 词：压裂液 破胶剂 交联剂 

分 类 号：TE357.11[石油与天然气工程—油气田开发工程]