新型树枝状交联剂的合成及其交联压裂液的研究  

Synthesis of novel dendritic crosslinker for preparation of crosslinked fracturing fluids

作　　者：贾文峰[1] 蒋廷学[1] 陈作[1] 姚奕明[1] 武俊文[1] 王宝峰[1] 魏娟明[1] 眭世元 

机构地区：[1]中国石化石油工程技术研究院,北京100101

出　　处：《现代化工》2016年第6期117-120,122,共5页Modern Chemical Industry

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：降低压裂液稠化剂浓度不仅可以降低压裂液成本,同时还可以降低对储层伤害。利用树枝状大分子合成了一种新型树枝状有机硼交联剂,此交联剂可大幅度降低羟丙基胍胶压裂液稠化剂浓度。通过不同量p H调节剂条件下压裂液耐温性能研究,确定了0.25%羟丙基胍胶压裂液最佳p H调节剂用量为0.6%。在p H调节剂为0.6%条件下,交联剂质量分数分别为0.5%、0.6%、0.7%、0.8%时,0.25%羟丙基胍胶压裂液在90、100、110、120℃条件下具有良好的耐温耐剪切性能。通过黏弹性测试可以看出,0.25%低质量分数的羟丙基胍胶压裂液具有良好的黏弹性能。The decrease of thickening agent concentration in fracturing fluid can not only cut down the cost of fracturing but also alleviate the damage to reservoir. A nove dentritic organic boron crosslinker is synthesized and is able to substantially reduce the concentration of thickening agent in hydroxypropyl guar-based fracturing fluids. The optimal amount of pH regulator is detemined as 0. 6% for 0. 25% of hydroxypropyl guar-based fracturing fluids. When the concentration of crosslinker is 0. 5%- 0. 8% and the content of pH regulator is 0. 6%,0. 25% hydroxypropyl guarbased fracturing fluids show good temperature resistance and shear stability under 90- 120℃. The result of viscoelastic measurement also indicate that 0. 25% hydroxypropyl guar-based fracturing fluids possess good viscoelastic property.

关 键 词：低浓度羟丙基胍胶 压裂液 树枝状大分子 有机硼交联剂 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]