特种油气藏2017，Vol.24Issue(1)：166-169,4.DOI:10.3969/j.issn.1006-6535.2017.01.034
枣园油田安山岩油藏超低密度水泥浆固井技术
Cementing by using ultra-low-density cement slurry in andesite reservoirs of the Zaoyuan Oilfield
摘要
Abstract
Cement slurry systems with conventional density are susceptible to problems related to lost circulation and poor sealing performances during cementation in andesite reservoirs.Under such circumstances, hollow micro-spheres of glass with apparent density of 0.70 g/cm3 are used as preferred lightening materials.In accordance with the dense packing theory, microsilica, fiber and other additives were used to enhance strength of the cement stone.In this way, ultra-low-density cement slurry system with density of 1.20 g/cm3 can be generated.Tests have been conducted to determine rheological properties, settlement stability, compressive strength and interfacial cementation strength of the system.Test results show the system has outstanding performances.On-site applications have been conducted in 5 wells with all cementation operations properly qualified.In addition, all such oil producers have high productivities after perforation.The newly developed technologies may provide valuable references and guidelines for cementation of formations with specific lithologic features and formations susceptible to lost circulation in the Dagang Oilfield.关键词
固井/漏失地层/超低密度水泥浆/安山岩/枣园油田Key words
cementation/formation with lost circulation/ultra-low-density cement slurry/andesite/Zaoyuan Oilfield分类
能源科技引用本文复制引用
唐世忠,王海滨,丛谧,郭小阳,张新华..枣园油田安山岩油藏超低密度水泥浆固井技术[J].特种油气藏,2017,24(1):166-169,4.基金项目
中国石油重大专项"大港油区大油气田勘探开发关键技术研究"子课题"高效钻完井及油气层保护配套技术研究"(2012E-10) （2012E-10）
