纳米二氧化硅交联剂的合成及其交联形成羟丙基胍胶压裂液的性能研究  

FABRICATION OF NANOSILICA CROSSLINKER AND FORMATION OF CROSSLINKED HYDROXYPROPYL GUAR-BASED FRACTURING FLUIDS

作　　者：贾文峰[1,2] 陈作[1] 姚奕明[1] 蒋廷学[1] 王宝峰[1] 张旭东[1] 魏娟明[1] 杜涛[1] 

机构地区：[1]中国石化石油工程技术研究院,北京100101 [2]中国石油大学(北京)石油工程学院,北京102249

出　　处：《精细石油化工》2015年第5期15-18,共4页Speciality Petrochemicals

基　　金：国家自然科学基金重大项目(51490653);国家重大科技专项(2011ZX05031-004-003);中国石化石油工程技术服务有限公司重点项目(10010099-13-ZC0607-0037)

摘　　要：利用Stber法制备了单分散二氧化硅颗粒,对纳米二氧化硅表面进行化学修饰,合成了新型纳米二氧化硅有机硼交联剂。对合成的纳米交联剂的性能进行了评价,并对其交联的低浓度羟丙基胍胶压裂液的延迟交联性能、耐温耐剪切性能、破胶性能、滤失性能等进行了研究。纳米二氧化硅交联剂交联的0.25%羟丙基胍胶压裂液,随着交联比变化,延迟交联时间在80-130s可调,并且耐温性能最高可达120℃。证明通过简单方法合成的纳米二氧化硅交联剂具有优良的性能,可有效交联低浓度羟丙基胍胶压裂液。Monodisperse nanosilica was synthesized by Stober method and modified via surface chemistry to form a novel nanosilica organic boron crosslinker. Properties of nanocrosslinker were evaluated and properties of hydroxypropyl guar gum fracturing fluid crosslinked by nanocrosslinker, such as delayed crosslinking, temperature resistance and shear resistance, breaking, fluid loss, and so on were investigated. As the change of crosslinking ratios, 0.25% hydroxypropyl guar gum fracturing fluids process adjustable delayed crosslinking time from 80 to 130 s. The highest temperature of temperature resistance is 120 ℃. It is testified that nanosilica crosslinker formed by simple method possess excellent performance and can crosslink with low concentration HPG to form fracturing fluid.

关 键 词：纳米二氧化硅 有机硼交联剂 羟丙基胍胶 压裂液 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]