钻井液与完井液2025，Vol.42Issue(3)：386-391,6.DOI:10.12358/j.issn.1001-5620.2025.03.015
川东北高温高密度钻井液的固井水泥污染及处理
Contamination of High Density Drilling Fluid at High temperature and Handling thereof in Northeast Sichuan
王俊祥 1胡俊辉 1王长勤 1罗亚飞 1刘杨康1
作者信息
- 1. 中石化中原石油工程有限公司西南钻井分公司,成都 610000
- 折叠
摘要
Abstract
The construction drilling fluid density in the Puguang Maoba block,Tongnanba Ma 3 block,Yuanba block in Northeast Sichuan is high.During the cleaning and plugging period,the high-density drilling fluid is common to experience high temperature thickening and consolidation after being contaminated by cementing cement.Due to unclear pollution mechanisms and lack of effective treatment methods,a high proportion of replacement mud is usually required,resulting in long treatment cycles and high costs.This article briefly analyzes and verifies the pollution mechanism of cementing cement on high-temperature and high-density drilling fluid through simulation experiments.The results show that the main reasons for pollution are:firstly,the high pH value of the drilling fluid after pollution leads to high-temperature thickening;secondly,some additives in the cement slurry invade the mud and solidify at high temperature,adsorbing a large amount of free water and causing thickening of the mud.In response to the pollution mechanism,AOP-1,a polymeric aluminum anti collapse agent,was selected as an efficient high-density water-based drilling fluid cement pollution treatment agent,which was successfully applied in four wells.The on-site application shows that AOP-1 has a good treatment effect on high-temperature and high-density water-based drilling fluid well cementing pollution,which avoid a large amount of displacement of drilling fluid after pollution and improving treatment efficiency.关键词
高温高密度/钻井液/水泥污染/聚合铝防塌剂/处理Key words
High temperature high density/Drilling fluid/Cement contamination/Polyaluminum borehole wall collapse preventer/Treatment分类
能源科技引用本文复制引用
王俊祥,胡俊辉,王长勤,罗亚飞,刘杨康..川东北高温高密度钻井液的固井水泥污染及处理[J].钻井液与完井液,2025,42(3):386-391,6.
