梳型温敏聚合物对无固相水基钻井液高温流变性的调控

doi:10.7623/syxb202402008

石油学报 ›› 2024, Vol. 45 ›› Issue (2): 427-436.DOI: 10.7623/syxb202402008

梳型温敏聚合物对无固相水基钻井液高温流变性的调控

谢彬强^1,2, 陶怀志³, 张俊⁴, 陈晋东², 吕军贤², 赵林^1,2

1. 长江大学油气钻采工程湖北省重点实验室湖北武汉 430100;
2. 长江大学石油工程学院湖北武汉 430100;
3. 中国石油川庆钻探工程有限公司钻采工程技术研究院四川广汉 618300;
4. 中国石油化工股份有限公司西北油田分公司石油工程技术研究院新疆乌鲁木齐 830011

收稿日期:2023-03-28 修回日期:2023-04-28 出版日期:2024-02-25 发布日期:2024-03-07
通讯作者: 谢彬强,男,1981年12月生,2013年获中国石油大学(华东)油气井工程专业博士学位,现为长江大学石油工程学院教授、博士生导师,主要从事油气井工作液、油田化学等方面研究。Email:binqiangxie@163.com
作者简介:谢彬强,男,1981年12月生, 2013年获中国石油大学(华东)油气井工程专业博士学位,现为长江大学石油工程学院教授、博士生导师,主要从事油气井工作液、油田化学等方面研究。Email:binqiangxie@163.com
基金资助:
国家自然科学基金项目(No.51974034,No.51404040)和高分子材料工程国家重点实验室基金项目(SKLPME 2017-04-07)资助。

Regulation of comb-type thermo-sensitive polymer on high-temperature rheological properties of solid-free water-based drilling fluid

Xie Binqiang^1,2, Tao Huaizhi³, Zhang Jun⁴, Chen Jindong², Lü Junxian², Zhao Lin^1,2

1. Hubei Key Laboratory of Drilling and Production Engineering for Oil and Gas, Yangtze University, Hubei Wuhan 430100, China;
2. School of Petroleum Engineering, Yangtze University, Hubei Wuhan 430100, China;
3. Drilling and Production Technology Research Institute, CNPC Chuanqing Drilling Engineering Co., Ltd., Sichuan Guanghan 618300, China;
4. Research Institute of Petroleum Engineering, Sinopec Northwest Oilfield Company, Xinjiang Urumqi 830011, China

Received:2023-03-28 Revised:2023-04-28 Online:2024-02-25 Published:2024-03-07

摘要/Abstract

摘要： 针对现有聚合物增黏剂存在高温降黏缺陷,不能有效调控无固相水基钻井液高温流变性能的难题,采用自由基胶束聚合法制备了丙烯酰胺(AM)/新型温敏单体(MVC)/2-丙烯酰胺基-2-甲基丙磺酸钠(NaAMPS)梳型温敏聚合物(TSP-Comb)。采用红外光谱、核磁氢谱和凝胶渗透色谱等表征和测定了TSP-Comb的分子结构和重均分子量,采用热重分析和环境扫描电镜分别测定了TSP-Comb分子链的热稳定性和微观结构,采用流变仪和可见分光光度计研究了TSP-Comb的温度响应特性,并研究了TSP-Comb对无固相水基钻井液高温流变性能的调控效果。研究结果表明,TSP-Comb溶液在90~180℃范围内具有优良的高温增稠特性和较高的相变温度(高于60℃),相比较于线性温敏聚合物,TSP-Comb在高温流变稳定性和相变温度提升方面均有明显改善;TSP-Comb的高温增稠特性有助于改善无固相钻井液的高温流变性能,基于TSP-Comb构建的无固相钻井液的表观黏度、塑性黏度、动切力等流变参数在90~180℃较宽温度范围内的变化率小于25%,TSP-Comb显著提高了无固相钻井液的高温流变稳定性,为无固相水基钻井液高温流变性能调控提供了一种新方法。

关键词: 梳型聚合物, 温敏聚合物, 高温增稠, 高温流变性, 无固相钻井液

Abstract: In view of the problem that existing polymer tackifiers have the defect of viscosity reduction at high temperature and cannot effectively regulate the high-temperature rheological properties of solid-free water-based drilling fluid, acrylamide (AM)/new thermo-sensitive monomer (MVC)/sodium 2-acrylamido-2-methylpropane sulfonate (NaAMPS)comb-type thermo-sensitive polymer (TSP-Comb)was prepared by free radical micellar polymerization. The molecular structure and weight-average molecular weight of TSP-Comb were characterized and measured by infrared spectroscopy, nuclear magnetic hydrogen spectroscopy and gel permeation chromatography. The thermal stability and microstructure of TSP-Comb molecular chain were measured by thermo gravimetric analysis (TGA)and environmental SEM, respectively. The temperature response characteristics of TSP-Comb was studied using rheometer and visible spectrophotometer, and the regulation effect of TSP-Comb on the high-temperature rheological properties of solid-free water-based drilling fluid was also studied. The results show that TSP-Comb solution has excellent high-temperature thickening property within the temperature range of 90 ℃ to 180 ℃ and higher phase transition temperature (higher than 60 ℃). Compared with linear thermo-sensitive polymers, TSP-Comb has been significantly improved in terms of high-temperature rheological stability and phase transition temperature. The high-temperature thickening property of TSP-Comb helps improve the high-temperature rheological properties of solid-free drilling fluid. The change rate of rheological parameters such as apparent viscosity, plastic viscosity and dynamic shear force of solid-free drilling fluid based on TSP-Comb was lower than 25 % within a wide temperature range of 90 ℃ to 180 ℃, and TSP-Comb has significantly improved the high-temperature rheological stability of solid-free drilling fluid, providing a new method for regulating the high-temperature rheological properties of solid-free water-based drilling fluid.

Key words: comb-type polymer, thermo-sensitive polymer, high temperature thickening, high temperature rheology, solid-free drilling fluid

中图分类号:

TE254

谢彬强, 陶怀志, 张俊, 陈晋东, 吕军贤, 赵林. 梳型温敏聚合物对无固相水基钻井液高温流变性的调控[J]. 石油学报, 2024, 45(2): 427-436.

Xie Binqiang, Tao Huaizhi, Zhang Jun, Chen Jindong, Lü Junxian, Zhao Lin. Regulation of comb-type thermo-sensitive polymer on high-temperature rheological properties of solid-free water-based drilling fluid[J]. Acta Petrolei Sinica, 2024, 45(2): 427-436.

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梳型温敏聚合物对无固相水基钻井液高温流变性的调控

Regulation of comb-type thermo-sensitive polymer on high-temperature rheological properties of solid-free water-based drilling fluid

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