摘要
在长水平段井开发过程中,水基钻井液的润滑和抑制性能直接影响开发效率。基于现有抑制剂和润滑剂的分子设计原理,设计与制备了一种新型低分子聚合物(FOI),旨在作为水基钻井液的多功能核心处理剂。实验结果表明,多功能基液FOI水溶液的润滑系数可降至0.05左右,显著降低了金属摩擦阻力,且有效抑制了膨润土的水化分散。此外,含多功能基液FOI的钻井液在老化前后流变参数变化较小,显著提升了润滑性能、抑制性能和体系稳定性,展现出良好的钻井液配伍性。现场应用表明,高效润滑水基钻井液实现了水平段全流程高效安全作业,在川南区块致密气井塔xxx-H3的成功应用有望实现水基钻井液替代油基钻井液作业。
During the development of long horizontal section wells,the lubrication and inhibition performance of water-based drilling fluids directly affected the development efficiency.Based on the molecular design principles of existing inhibitors and lubricants,a new type of low-molecular-weight polymer(FOI)was designed and prepared.This polymer was designed to serve as a multifunctional core treatment agent for water-based drilling fluids.The experimental results showed that the lubrication coefficient of the multifunctional base liquid FOI aqueous solution can be reduced to about 0.05,significantly reducing the frictional resistance between metals and effectively inhibiting the hydration and dispersion of bentonite.Furthermore,the drilling fluid containing the multi-functional base fluid FOI had relatively small changes in rheological parameters before and after aging.Meanwhile,it can improve the lubrication performance,inhibition performance and system stability,demonstrating good compatibility of drilling fluid.Field applications showed that the highly efficient lubricating water-based drilling fluid had achieved efficient and safe operation throughout the entire process in the horizontal section.The successful application in Well TA xxx-H3 was expected to realize the replacement of oil-based drilling fluid operations with water-based drilling fluid.
作者
倪超武
李明
张俊
周斌
郭东池
NI Chaowu;LI Ming;ZHANG Jun;ZHOU Bin;GUO Dongchi(Beiken Energy(Chengdu)Co.,Ltd.,Chengdu 510108,China)
出处
《山东化工》
2025年第23期42-45,共4页
Shandong Chemical Industry
关键词
高效水基钻井液
润滑性能
抑制性能
吸附作用
低分子聚合物
摩阻扭矩
high-efficiency water-based drilling fluid
lubrication performance
inhibitory performance
adsorption effect
lowmolecular polymer
frictional torque
