粉煤灰陶粒石油压裂支撑剂的制备与表征  

Preparation and Characterization of Fly Ash Ceramsite Petroleum Fracturing Proppant

作　　者：何成 杨永超 曹建伟 杜宇 于艳军 熊中强 李宁涛 王利兵 HE Cheng;YANG Yongchao;CAO Jianwei;DU Yu;YU Yanjun;XIONG Zhongqiang;LI Ningtao;WANG Libing(Technical Center for Safety of Industrial Products of Tianjin Customs,Tianjin 300308,China)

机构地区：[1]天津海关工业产品安全技术中心,天津300308

出　　处：《陶瓷学报》2021年第1期116-121,共6页Journal of Ceramics

基　　金：国家重点研发计划课题(2019YFC0810902);天津海关科技计划项目(2019THK002)。

摘　　要：随着石油的不断开采,对压裂支撑剂的要求越来越大,目前市场上的石油压裂支撑剂普遍存在体密度偏大、抗破碎能力不高等问题。以粉煤灰固体废弃物为主要原料,采用了8种配方制备出了低密度、高强度的石油压裂支撑剂;利用XRD、SEM等方法,对制品的显微结构和物化性能进行了分析和物相表征;探讨了烧成温度、保温时间对支撑剂体积密度和破碎率的影响。结果表明,烧成温度为1160℃、保温时间为60 min时制得的石油压裂支撑剂在52 MPa的闭合压力下破碎率最低仅为18.2%,体积密度为1.165 g/cm^(3);高温下形成的高强度石油压裂支撑剂,以刚玉、莫来石和钙长石为主要晶相,在1160℃烧成温度下,各晶相基本发育完全,显微结构致密,力学性能优良。With the continuous increase in the exploitation of oil,the need for petroleum fracturing proppant is continuously increased.Petroleum fracturing proppant with low-density and high-strength were prepared using fly ash solid waste as the main raw material with eight compositions.Microstructure and phase compositions of the samples sintered at different temperatures were characterized by using scanning electron microscope(SEM)and X-ray diffraction(XRD).The effects of sintering temperature and time on bulk densities and anti-fragmentation capability of the samples were analyzed and discussed.The petroleum fracturing proppant sintered at 1160℃for 60 min possessed the lowest crushing rate of only 18.2%at the closing pressure of 52 MPa,while the corresponding bulk density was 1.165 g/cm^(3).High strength petroleum fracturing proppant contained corundum,mullite and anorthite as the main crystal phases which were formed at high temperatures.Therefore,after sintering at 1160℃,the phase crystallization was completed,dense microstructure was developed and excellent mechanical properties were achieved.

关 键 词：低密度 高强度 粉煤灰 压裂支撑剂 体积密度 破碎率 

分 类 号：TQ174.75[化学工程—陶瓷工业]