石油钻采工艺2016，Vol.38Issue(3)：372-377,6.DOI:10.13639/j.odpt.2016.03.018
一种超低密度支撑剂的可用性评价
Evaluation on applicability of an ultra-low-density proppant
摘要
Abstract
Conventional proppants usually have a high density, which greatly affects the creation of effective hydraulic fractures and makes these proppants inapplicable for long fracture induction. Whereas, ultra-low-density proppants can be used to increase the effective length of fractures and thereby improve the performance of fractured wells. In this paper, an innovative hollow and coated ceramic proppant (ST-I) was evaluated for its basic properties (e.g. acid solubility and crush resistivity) through the combination of lab experiment and software simulation, and the changes of its conductivity with closure pressure and sanding concentration were analyzed. Moreover, this ultra-low-density proppant was compared with ordinary ceramic proppant for performance, and its settlement behaviors in fracturing lfuids with different viscosities were tested. The results show that this ultra-low-density proppant has good physical per-formance and conductivity, and it settles at an apparently low rate in fracturing lfuids, which make it ideal for long fracture induction. Together with rational design of fracturing treatment in late stage, this innovative proppant can help to create fractures with effective half length up to 180 m.关键词
长缝压裂/超低密度支撑剂/导流能力/沉降特性Key words
long fracture induction/ultra-low-density proppant/conductivity/settlement behavior分类
能源科技引用本文复制引用
曲占庆,曹彦超,郭天魁,许华儒,龚迪光,田雨..一种超低密度支撑剂的可用性评价[J].石油钻采工艺,2016,38(3):372-377,6.基金项目
国家自然科学基金青年基金项目“径向钻孔引导水力压裂裂缝定向扩展机理研究”（编号51404288）；中国石油大学（华东）研究生创新工程资助项目（编号YCX2014010）。 （）
