钻井液与完井液2026，Vol.43Issue(2)：161-171,11.DOI:10.12358/j.issn.1001-5620.2026.02.003
一种新型无固相钻井液抗高温增黏剂
A New High-temperature Tackifier for Solid-free Drilling Fluids
摘要
Abstract
The Ordovician buried-hill reservoir in Liaohe Oilfield exhibits a challenging high-temperature(200℃at reservoir center)and low-pressure(pressure coefficient 1.01～1.06)environment characteristic of typical high-temperature,low-pressure oil/gas reservoirs.To achieve formation protection,a solids-free water based drilling fluid was prioritized,with tackifier selection being critical.Through molecular structure optimization,a novel high-temperature/salt-resistant tackifier was developed using four monomers:N-vinylpyrrolidone(NVP),2-acrylamido-2-methylpropane sulfonic acid(AMPS),N,N-diethylacrylamide(DEAA),and 1-(3-sulfopropyl)-2-vinylpyridinium hydroxide inner salt.The synthesis employed N,N'-methylene bisacrylamide as crosslinker with potassium persulfate and sodium bisulfite as redox initiators.FTIR and TGA analysis confirmed successful polymerization,demonstrating superior thermal stability with 296.66℃initial decomposition temperature and only 45.96%mass loss during degradation phase,outperforming commercial HE300.The fluid achieved remarkable rheological performance with 722 consistency coefficient(K)at 0.5%concentration.Laboratory evaluations verified exceptional thermal stability up to 220℃and saturated salt tolerance.Field applications demonstrated excellent viscosity-enhancing performance and robust durability of this novel tackifier,providing vital technical support for buried-hill reservoir development and high-temperature formation drilling operations.关键词
抗高温/耐盐/增黏剂/无固相钻井液/深层潜山Key words
High-temperature resistant/Salt-tolerant/Tackifier/Solid-free drilling fluid/Buried hill分类
能源科技引用本文复制引用
周国伟,张鑫,阎卫军,华桂友,张振华,邱正松..一种新型无固相钻井液抗高温增黏剂[J].钻井液与完井液,2026,43(2):161-171,11.基金项目
国家重点研发计划"中国-沙特石油能源"一带一路"联合实验室建设与联合研究"(2022YFE0203400) （2022YFE0203400）
中国石油长城钻探项目"抗200℃高温水基钻井液体系及核心处理剂新材料研究"(GWDC2024-01-AHX-04). （GWDC2024-01-AHX-04）
