钻井液与完井液2023，Vol.40Issue(5)：685-692,8.DOI:10.12358/j.issn.1001-5620.2023.05.020
聚驱油田复合高效解堵体系研究
Compound and Efficient Blockage-Removal Agent for Polymer Flooding Oilfield
摘要
Abstract
Aiming at the problem of complex blockages in which polymers,inorganic scales and heavy oils are wrapped around each other after long-term polymer injection in the polymer flooding oilfield,resulting in serious blockage of the formation,a stable and efficient compound blockage-removal agent with 0.6%percarbonamide,1%acetic acid,0.3%OP-10,1%DTPMP,and 1%HSJ-3 was prepared.And the properties of the compound blockage-removal agent were evaluated.The results showed that the agent can effectively degrade the simulated blockages under different temperature conditions.Under the condition of 80℃,the degradation rate of more than 90%can be reached in 4 h,with excellent degradation performance and temperature resistance.Placed at 80℃for 1 h,the stability was maintained at 97%,with good stability performance and the corrosion rate was 0.9871 g·m-2·h-1,which met the industry-level standard.When prepared with 15×104 mg/L high salinity brine,the blockage-removal efficiency was basically not affected and the salinity resistance is excellent.The compound blockage removal agent can effectively solve the complex blockages formed in the process of polymer flooding through gradual stripping and continuous degradation.After injecting the composite blockage-removal agent,the core permeability increased from 0.244×10-3 μm2 to 6.391×10-3 μm2,and the permeability increased by a factor of 25.192.The compound block-removal agent can effectively solve the complex blockages.关键词
聚驱油田/复杂堵塞物/过碳酰胺/复合体系Key words
Polymer flooding oilfield/Complex blockages/Percarbamide/Compound agent分类
能源科技引用本文复制引用
刘毅龙,齐宁,甘俊冲,申玉洋,张振军,石向轲..聚驱油田复合高效解堵体系研究[J].钻井液与完井液,2023,40(5):685-692,8.基金项目
十三五重大专项"碳酸盐岩复合深度改造优化设计方法及配套技术研究"(2017ZX05030005-002-003) （2017ZX05030005-002-003）
山东省自然科学基金"基于蚓孔竞争机制的自转向酸酸蚀蚓孔描述及动态酸化模拟研究"(ZR201702180073). （ZR201702180073）
