钻井液与完井液2025，Vol.42Issue(4)：472-477,6.DOI:10.12358/j.issn.1001-5620.2025.04.005
环保型抗超高温海水基低固相钻井液
An Environmentally Friendly Ultra-High Temperature Low Solids Seawater-Based Drilling Fluid
摘要
Abstract
The failure of a drilling fluid at high temperatures is one of the main causes of complex downhole accidents.The depths of wells around the Bohai Bay are close to 6,000 m,and the bottom hole temperatures are expected to exceed 200℃.To prevent wellbore collapse and the failure of the drilling fluids,protect the oil and gas reservoirs and the marine environment,high-temperature resistant drilling fluid additives were optimally selected,the high-temperature resistance mechanisms of the additives were explored,and as a result of these researches,an environmentally friendly ultra-high temperature low-solids seawater-based drilling fluid with a temperature resistance of 200℃and a density of 1.9 g/cm3 was formulated and applied in the well Gaitan-1.The research results and field application effects show that after hot rolled at 200℃for 16 hours,the filtration rate of this drilling fluid is only 15 mL.It has many advantages such as low filtration rate,high inhibitive capacity,good lubricity,good suspending and carrying capacity,as well as reservoir protection capability.The well was drilled successfully,the rate of wellbore enlargement was small,and the composition of the drilling fluid was simple and environmentally friendly,satisfying the requirements of marine environmental protection.This drilling fluid has helped solve the technical difficulties encountered in oil and gas drilling in deep high-temperature and high-pressure formations in the Bohai Sea area,providing technical support for the exploration and development of deep oil and gas in this area in the future,and also providing a sample for the application of ultra-high temperature low-solids drilling fluids in other deep formations and environmentally sensitive areas.关键词
海水基低固相钻井液/超高温/环境保护Key words
Low solids seawater-based drilling fluid/Ultra-high temperature/Environmentally friendly分类
能源科技引用本文复制引用
吴文兵,钟杰,刘涛,黄连路,王潇辉,康钰敏..环保型抗超高温海水基低固相钻井液[J].钻井液与完井液,2025,42(4):472-477,6.基金项目
中央高校基本科研业务费专项资金资助"黏土超高温水化机理的分子模拟及其在钻井液中的应用"(24CX02013A) （24CX02013A）
中国石油集团海洋工程有限公司科技项目"超高温条件下钻井液稳定机理和潜山地层漏失机理研究"(ZJ2023技35)和"去磺化抗高温高密度复合盐钻井液体系研究". （ZJ2023技35）
