大庆石油地质与开发2011，Vol.30Issue(5)：101-104,4.DOI:10.3969/J.ISSN.1000-3754.2011.05.022
超级瓜尔胶理化特征及压裂液配方评价
PHYSICOCHEMICAL CHARACTERISTICS OF THE PROCESSED ENHANCED GUAR AND FORMULA EVALUATIONS FOR FRACTURING FLUID
摘要
Abstract
Aiming at the demands of fracturing stimulation in ultra-low permeability reservoirs in Daqing Oilfield, a new kind of processed enhanced guar fracturing fluid is developed. The chemical structure and molecular weight of the processed enhanced guar are characterized through the application of nuclear magnetic resonance ( NMR) and viscosity measurement technique, and the rheological properties of the processed enhanced guar fracturing fluid is measured by rheometers. The result shows that: chemical structures of the processed enhanced guar and the guar powder are basically the same, but the molecular weight of the processed enhanced guar is approximately 1.4 times greater than that of guar gum powder. At the same temperature and the same shear rate, the usage of the processed enhanced guar used to prepare the fracturing fluid with the same shear viscosity is only half of the usage of hydroxypropyl guar. Compared with hydroxypropyl guar fracturing fluid, the residue content of the fracturing fluid prepared with the processed enhanced guar is reduced by more than fifty percent, and meanwhile more complete ge-lout is realized. The fracturing operation is conducted to the 61 wells in the 119 layers of the low-permeability reservoirs in Hailaer Basin by the application of the processed enhanced guar fracturing technology. The average liquid production intensity is 1. 10 t/ ( m · D) , 22.7% higher than that of the 12 wells in 22 layers in the same block by the application of the conventional hydroxypropyl guar fracturing liquid technology, and a relatively good stimulation effect is obtained.关键词
超级瓜尔胶/相对分子质量/化学结构/低渗透储层/增产效果Key words
processed enhanced guar/molecular weight/chemical structure/low-permeability reservoir/stimula-tion effect分类
能源科技引用本文复制引用
王贤君,韩松,肖丹凤,张明慧,侯堡怀..超级瓜尔胶理化特征及压裂液配方评价[J].大庆石油地质与开发,2011,30(5):101-104,4.基金项目
中国石油股份公司“十一五”科技攻关项目(2008D150305)部分成果资助. （2008D150305）
