钻井液与完井液2017，Vol.34Issue(2)：117-120,125,5.DOI:10.3969/j.issn.1001-5620.2017.02.021
新型低密度高强度水力压裂支撑剂的研制
Development of a New Low Density High Strength Hydraulic Fracturing Proppant
摘要
Abstract
The use of high performance low density ceramic proppants in reservoir fracturing not only avoids the settling of proppant particles during their migration in fractures, thereby effectively lengthening the fracturespropped and enhancing the fluid conductivity of the fractures, it also helps relax the requirements for the performance of fracturing fluid, and reduce the pumping power required and minimize operating risks. This paper discusses the preparation of a low density high strength ceramic proppant from a low-grade bauxite (containing less than Al2O3) and fly ash, an industrial waste. Mixtures of the bauxite, the fly ash and some special accessories in a certain ratio were ground, and then calcined at high temperatures to form spherical ceramic particles with low density and high strength. The proppant prepared had particle sizes between 0.45 mm and 0.9 mm, bulk density between 1.40 g/cm3 and 1.55 g/cm3, and apparent density of ca. 2.75 g/cm3. In laboratory test, only 5% of the proppant particles were broken into pieces under a closure pressure of 52 MPa. This ceramic proppant, because of its superior performance, will find wide application in low permeability reservoir development and shale gas reservoir stimulation.关键词
支撑剂/水力压裂/低密度/高强度/铝矾土/粉煤灰Key words
Proppant/Hydraulic fracturing/Low density/High strength/Bauxite/Fly ash分类
能源科技引用本文复制引用
董丙响,蔡景超,李世恒,倪小金,陈挺,涂志威..新型低密度高强度水力压裂支撑剂的研制[J].钻井液与完井液,2017,34(2):117-120,125,5.基金项目
中国石油集团渤海钻探工程有限公司项目"水平井分段压裂工艺技术研究与应用"(2012ZD05K) 的部分内容. （2012ZD05K）
