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基于温敏型提切剂的抗高温防漏堵漏油基钻井液体系
肖沣峰, 蒋官澄, 何涛, 彭碧强, 胡静, 吕艳华, 杜明亮.
1 中国石油大学( 北京) 石油工程学院,北京 102249 2 中国石油大学( 北京) 油气资源与工程全国重点实验室,北京 102249 3 中国石油集团川庆钻探工程有限公司钻井液技术服务公司,成都 610051
High-temperature resistant oil-based drilling fluid system for leakage prevention and plugging based on temperature-sensitive rheology modifier
XIAO Fengfeng, JIANG Guancheng, HE Tao, PENG Biqiang, HU Jing, LV Yanhua, DU Mingliang.
1 College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China 2 State Key Laboratory of Oil and Gas Reservoirs and Engineering, China University of Petroleum, Beijing 102249, China 3 Drilling Fluid Technology Service Company, China Petroleum Group Chuanqing Drilling Engineering Company Limited, Chengdu 610051, China

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摘要  针对牙哈储气库钻井中油基钻井液体系在高—低温循环条件下流变性恶化且堵漏承压能力不足难题,研发了一种温敏型抗高温提切剂RHT,并优选堵漏材料和配套处理剂,构建了一套抗高温防漏堵漏油基钻井液体系。通过红外光谱、核磁共振氢谱、热重曲线和DSC分析等表征手段,深入分析了RHT的分子结构、热稳定性及温敏特性,系统评价了其在乳液和油基钻井液中的流变性调控作用。实验结果表明:RHT显著改善乳液的剪切稀释性和触变性,且在高低温循环条件下具有良好的流变性调控能力,80 ℃条件下,体系动切力提升87%,塑性黏度无增加;220 ℃时,动切力提升220%,动塑比为0.49 Pa/(mPa•s)。经220 ℃老化后的钻井液体系保持了较强的携岩性能,并能够有效封堵20~40 目砂床和1~3 mm缝板,最大承压能力8 MPa。该体系在牙储-X 井的现场应用中,显著改善了钻井液的携岩与堵漏性能,减少了漏失与卡钻等复杂问题,为牙哈储气库的高效开发提供了有力的技术支撑。
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关键词 : 油基钻井液,温敏,提切剂,抗高温,防漏堵漏
Abstract

To address the challenges of the oil-based drilling fluid system’s deteriorating rheological properties and insufficient plugging pressure resistance under high-low temperature cycling conditions in the Yaha gas storage reservoir drilling, a temperature- sensitive high-temperature thickener, RHT, was developed. Optimized plugging materials and supporting agents were selected to construct a high-temperature resistant oil-based drilling fluid system. Characterization methods, including infrared spectroscopy, nuclear magnetic resonance hydrogen spectra,thermogravimetric analysis, and differential scanning calorimetry (DSC), were used to analyze RHT’s molecular structure, thermal stability, and temperature-sensitive characteristics in depth. The systematic evaluation of its rheological control in emulsions and oil-based drilling fluids was conducted. Experimental results showed that RHT significantly improved the shear-thinning and thixotropic properties of the emulsion, demonstrating excellent rheological control capabilities under high-low temperature cycling conditions. At 80 ℃, the dynamic yield stress increased by 87% without any increase in plastic viscosity; at 220 ℃, the dynamic yield stress increased by 220%, with a dynamic plastic ratio of 0.49 Pa/(mPa·s). The drilling fluid system maintained strong rock-carrying capacity after aging at 220 ℃ and effectively sealed 20~40 mesh sand beds and 1~3 mm cracks, achieving a maximum pressure resistance of 8 MPa. In the field application of the Yaha gas storage reservoir well X, this system significantly enhanced the rock-carrying and plugging performance of the drilling fluid, reducing complexities such as fluid loss and stuck pipe incidents, thereby providing strong technical support for the efficient development of the Yaha gas storage reservoir.


Key words: oil-based drilling fluid; temperature-sensitive; rheology modifier; high-temperature resistant; leakage prevention and plugging
收稿日期: 2025-04-30     
PACS:    
基金资助: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) 资助
通讯作者: m15600263100_1@163.com
引用本文:   
肖沣峰, 蒋官澄, 何涛, 彭碧强, 胡静, 吕艳华, 杜明亮. 基于温敏型提切剂的抗高温防漏堵漏油基钻井液体系. 石油科学通报, 2025, 10(02): 404-414
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