石油钻采工艺2017，Vol.39Issue(3)：307-312,6.DOI:10.13639/j.odpt.2017.03.010
紧密堆积优化固井水泥浆体系堆积密实度
Packing compactness of cementing slurry system for close packing optimization
摘要
Abstract
Close packing technology, as the key technology for the design of high-performance cementing slurry system, is of great significance to improve the performance of cementing slurry, and its core is to increase the packing compactness of grain system. The compressible packing model was taken as the theoretical model of close packing, and model parameters and numerical calculation methods were ascertained. Calculation program of packing compactness was worked out and its calculation results were verified. The factors influencing the packing compactness of grain system were analyzed by calculating the packing compactness of multi-grain sys-tem. Finally, slurry was design and its performance was tested. It is indicated that the packing compactness can be improved effectively by adding ultrafine grain compositions moderately, optimizing size distribution interval appropriately and increasing average diameters of large and small grains in the grain system. Compared with ternary system, quinary system with nano materials has the closest packing of grain system and presents better slurry performance. It is feasible to take the close packing model as the guide for the design of dry mixing ratio of cement system used in oil wells.关键词
固井/水泥浆/紧密堆积/可压缩堆积模型/堆积密实度/粒径分布Key words
cementing/slurry/close packing/compressible packing model/packing compactness/size distribution分类
能源科技引用本文复制引用
李鹏晓,孙富全,何沛其,夏元博,曾建国..紧密堆积优化固井水泥浆体系堆积密实度[J].石油钻采工艺,2017,39(3):307-312,6.基金项目
中国石油天然气集团公司课题"枯竭油气藏型储气库固井技术与压缩机组现场试验"(编号:2014F-1501)和"井筒工作液新材料新体系基础研究"(编号:2016A-3903)部分研究成果. （编号:2014F-1501）
