石油化工高等学校学报2024，Vol.37Issue(4)：18-24,7.DOI:10.12422/j.issn.1006-396X.2024.04.003
玛湖油田井筒垢物的组成及结垢机理研究
Study on the Scale Composition and Scaling Mechanism of Wellbore in Mahu Oilfield
摘要
Abstract
In recent years,many oil wells in Mahu oil fields have experienced scaling on the pipe wall,which leads to wellbore blockage and seriously affects the production effect.In this paper,the structure and composition of scale in Mahu oilfield were studied,and the mechanism of scale formation was investigated by using OLI-ScaleChem simulation method and the interaction experiments between fluid and rock matrix.The results show that the main fouling is CaCO3,and the deeper the well is,the larger the amount of scale is.In addition,the wellbore temperature,pressure and pH of the fluid all have certain influence on scaling.According to the results of fluid rock reaction,it is inferred that CaCO3 scale is the reaction product of highly mineralized fluid and calcium-rich minerals under the condition of acidic well fluid,and forms into balls under the action of polymer,resulting in hole and wellbore plugging.The results of the study are of great significance in guiding the proposal of subsequent scaling prevention and treatment measures in the oilfield.关键词
玛湖油田/CaCO3垢物/结垢机理Key words
Mahu oilfield/CaCO3 scale/Scaling mechanism分类
能源科技引用本文复制引用
周浩,龚喜刚,唐红娇,刘欢,时凤,张娟,杨磊磊..玛湖油田井筒垢物的组成及结垢机理研究[J].石油化工高等学校学报,2024,37(4):18-24,7.基金项目
新疆砾岩油藏实验室开发性项目(2020D04045) （2020D04045）
