海上油田用自生泡沫复合固砂体系性能评价  

Performance evaluation of self generated foam composite sand consolidation system for offshore oilfield

作　　者：郑继龙 吴彬彬 ZHENG Jilong;WU Binbin(Engineering Technology Branch of CNOOC Energy Development Co.,Ltd.,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《精细石油化工进展》2022年第4期1-5,共5页Advances in Fine Petrochemicals

摘　　要：渤海油田油井出砂严重导致开发效果变差,针对常规化学防砂在海上油田应用中存在局限性而研发一种新型的自生泡沫复合固砂体系。通过室内实验评价了该复合体系的生气效果、起泡性能、固砂性能以及注入性,研究结果表明:自生泡沫复合固砂体系的生气情况不受树脂固砂体系的影响,在吴茵剪切机和岩芯中均能稳定生泡;在压力为15.0 MPa、温度为60~90℃条件下,该复合体系固结石英砂后的固结体抗压强度为7.0~7.5 MPa、水测渗透率为4~5μm^(2),长期冲刷出砂率低于0.1%,且体系在清洁钢片表面不会固结。该复合体系可在10倍级差的非均质岩芯中均匀注入,生成的泡沫堆积占据部分砂粒空隙,固结后岩芯端面分布有大量气孔,具有扩孔增渗的作用。The sand production in Bohai oilfield is serious,resulting in poor development effect. Aiming at the limitation of conventional chemical sand control in offshore oilfield,a new type of self generated foam composite sand consolidation system was developed. The gas generation effect,foaming performance,sand consolidation performance and injectability of the composite system were evaluated by laboratory experiments. The results showed that the gas generating condition of the self generated foam composite sand consolidation system was not affected by the resin sand consolidation system,and it produced stabilized bubbles in the Waring shear and core. When the pressure was 15.0 MPa and the temperature was 60-90 ℃,the compressive strength of the consolidated body after stone quartz sand consolidation of the composite system was between 7.0-7.5 MPa and the water measured permeability was 4-5 μm^(2),the long-term scouring sand production rate was less than 0.1%,and the system did not consolidate on the surface of clean steel sheet. The composite system was injected uniformly in the 10 times differential heterogeneous core,and the foam accumulation took up part of the sand grains voids. After consolidation,there were a large number of stomata on the core end surface,which had the function of expanding pore and increasing permeability.

关 键 词：油田防砂 化学防砂 泡沫固砂 扩孔增渗 复合固砂体系 自生泡沫体系 

分 类 号：TE53[石油与天然气工程—油气田开发工程]