油气田钻井用提切材料研究进展
1. 中国石油集团川庆钻探工程有限公司长庆钻井总公司, 陕西西安 710000
2. 中国石化石油工程技术研究院德州大陆架石油工程技术有限公司, 山东德州 253000
3. 西安石油大学, 陕西省油气田环境污染控制技术与储层保护重点实验室, 陕西西安 710065
| 摘 要： | 目前中国陆地平均钻井深度超过3000 m，具有低粘度、高切力、高动塑比、高抗温性的钻井液对深井和超深井十分关键，低粘度的钻井液在循环过程中能够产生较小的摩擦阻力，从而降低循环能耗和减小循环压力损失。同时钻井液需要较高的切力，以便有效地清除岩屑和保持井壁稳定。低粘度高切力的钻井液能够在高温高压环境下保持稳定性，且能够更快速地从井眼中排出，降低钻井液对井壁的侵蚀和对地层的污染。针对以上要求，国内外对低粘度、高切力环保型钻井液处理剂进行了广泛研究，包括纳米颗粒、聚合物类、木质素纤维素类、盐等类型。本文对上述几种不同类型处理剂的研究现状进行分析对比，其中纳米颗粒和木质素纤维素类最符合环保抗高温的要求，并对纳米混合金属氢氧化物、多元正电胶代替膨润土应用于钻井液基浆及木质素纤维素的应用进行了展望。 |
| 关 键 词： | 钻井液; 环保; 抗高温; 低粘; 高切力 |
| DOI： | 10.57237/j.mater.2023.03.002 |
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收稿日期: 2023-05-31
接受日期: 2023-07-06
在线出版日期: 2023-07-24
Research Progress in Rheology Modifier for Oil and Gas Field Drilling Fluid
1. Changqing Drilling Company of CCDC, Xi’an 710000, China
2. SINOPEC Research Institute of Petroleum Engineering Co., Ltd, Dezhou 253000, China
3. Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, Xi’an Shiyou University, Xi’an 710065, China
| Abstract: | At present, the average drilling depth on land in China is over 3000 m. Drilling fluid with low viscosity, high yield value, high ratio of dynamic shear force and high temperature resistance are very critical for deep and ultra-deep wells. Low viscosity drilling fluid can generate less frictional resistance during circulation, thus reducing circulation energy consumption and circulation pressure loss. At the same time, drilling fluid require high yield value to effectively remove rock chips and maintain well wall stability. Low viscosity and high yield value drilling fluid can maintain stability under high temperature and pressure, and can be discharged from the borehole more quickly, reducing the erosion of the drilling fluid on the well wall and contamination of the formation. In view of the above requirements, low viscosity, high yield value drilling fluid additives have been widely studied at home and abroad, including nanoparticles, polymers, lignocellulose, salt and other types. This paper analyzes and compares the research status of these different types of treatment agents. Nanoparticles and lignocellulose were the most suitable for environmental protection and high temperature resistance, and outlooks the research direction of nano-mixed metal hydroxide, multi-positive gel instead of bentonite in drilling fluid base slurry and lignocellulose. |
| Keywords: | Drilling Fluid; Environmental Protection; High Temperature Resistance; Low Viscosity; High Yield Value |
基金
| 1. | 陕西省重点研发计划项目 (2023-YBGY-05) |
| 2. | 陕西省教育厅重点科学研究计划项目 (21JY035) |
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