钻井液与完井液2026，Vol.43Issue(3)：366-373,8.DOI:10.12358/j.issn.1001-5620.2026.03.009
超高温深井油基钻井液用两亲性流型调节剂
An Amphiphilic Flow Pattern Regulator for Oil-Based Drilling Fluids Used in Ultra-High Temperature Deep Wells
摘要
Abstract
In deep and ultra-deep well drilling,after long period of circulation at ultra-high temperatures,oil-based drilling fluids will experience rheology deterioration problems,such as gel or suspending capacity decline,a causative factor for barite sag,stuck pipe and wellbore collapse etc.To deal with this problem,an ultra-high temperature amphiphilic oligomer flow pattern modifier was developed through high temperature amidation reaction with raw materials such as tall oil fatty acids,fatty alkyl polyamines and maleic anhydride.Laboratory experiments were conducted to carefully investigate the performance and mechanisms of the oligomer flow pattern modifier,and the experimental results show that the oligomer flow pattern modifier can be used to significantly improve the rheology and settling stability of oil-based drilling fluids.At 230℃,0.5%oligomer flow pattern modifier can increase the yield value of a water-in-oil emulsion from 0.5 Pa to 4.5 Pa,and the emulsion stability voltage from 323 V to 509 V.It can increase the yield value of an oil-based drilling fluid from 6.5 Pa to 22.5 Pa,and the emulsion stability voltage from 1,014 V to 1,315 V.A mud sample was taken from a well,it was first hot rolled for 1 d,and then allowed for standing for 5 d.The mud sample was then treated with the oligomer flow pattern modifier,and it still acquired good gel strengths,settling stability and emulsion stability.This oligomer flow pattern modifier provides a technical reference for the development of ultra-high temperature oil-based drilling fluid.关键词
油基钻井液/超高温/流型调节剂/增黏提切/沉降稳定Key words
Oil-based drilling fluid/Ultra-high temperature/Flow pattern modifier/Increase viscosify and gel strength/Settling stability分类
能源科技引用本文复制引用
彭江浩,高斌,王燕,邓正强,祝琦,李新亮..超高温深井油基钻井液用两亲性流型调节剂[J].钻井液与完井液,2026,43(3):366-373,8.基金项目
国家自然科学基金青年基金项目"笼状纳米粒子杂化聚合物调控超高温高盐水基钻井液流变性机理研究"(52404006). （52404006）
