钻井液与完井液2025，Vol.42Issue(3)：308-317,10.DOI:10.12358/j.issn.1001-5620.2025.03.005
纳米改性材料在水基钻井液中的减阻性能
Drag Reducing Performance of a Nanomodified Material in Water Based Drilling Fluids
摘要
Abstract
The flow of water based drilling fluids in slim holes fluctuate significantly and the interface resistance between the drilling fluids and the wellbore/drilling tools is high,resulting in high flow energy loss and high equivalent circulation density(ECD)which in turn cause mud losses and stuck pipe to happen.A drag reducer DRA-1 for water based drilling fluids was synthesized with nano silica as the raw material through graft-modification,and its performance was studied.In laboratory experiment,it was found that a base mud treated with 3%DRA-1 has its flow index increased by 366.7%to 0.5064,the consistency coefficient reduced by 90.6%to 0.4847 Pa·sn,and the extreme pressure coefficient of friction reduced by 81.82%.After hot rolling at 120℃for 16 hours,the extreme pressure coefficient of friction was further reduced,indicating that DRA-1 is resistant to high temperature.When the DRA-1 treated base mud was flowing under the same conditions on a self-made steel plate and a polytetrafluoroethylene plate respectively,DRA-1 performed much better than the same type of field additives in improving the flow behavior of the mud.Operation data obtained from the well A showed that by adding 1%DRA-1 in the water based drilling fluid,the pressure loss along the circulation system was reduced by 1.937 MPa,a reduction rate of 21.61%,and lower ECD was obtained in the whole drilling operation,indicating that DRA-1 helped increase the drilling efficiency and safety,and this is very important to the increase of economic benefits and the avoidance or drilling accidents.关键词
水基钻井液/纳米材料/流动减阻/润滑性能/ECDKey words
Water based drilling fluid/Nanomaterial/Drag reducing in flow/Lubricity/ECD分类
能源科技引用本文复制引用
郭磊,李模刚,邓楚娈,贺垠博,耿铁..纳米改性材料在水基钻井液中的减阻性能[J].钻井液与完井液,2025,42(3):308-317,10.基金项目
国家自然科学基金重大项目"深海深井钻井液漏失机理与防治方法研究"(U23B2082). （U23B2082）
