钻井液用β-环糊精聚合物微球降滤失剂的制备

高鑫; 钟汉毅; 邱正松; 金军斌; 李大奇; 李佳

doi:10.3969/j.issn.1001-5620.2021.01.004

钻井液用β-环糊精聚合物微球降滤失剂的制备

doi: 10.3969/j.issn.1001-5620.2021.01.004

高鑫^1,2,
钟汉毅^1,2, ,,
邱正松^1,2,
金军斌³,
李大奇³,
李佳^1,2

1. 非常规油气开发教育部重点实验室(中国石油大学(华东)), 山东青岛 266580;
2. 中国石油大学(华东)石油工程学院, 山东青岛 266580;
3. 中国石化石油工程技术研究院, 北京 100101

详细信息

作者简介:
高鑫,主要研究方向为钻井液技术。E-mail:499708331@qq.com

通讯作者:
钟汉毅,副教授。E-mail:zhonghanyi@126.com

中图分类号: TE254.4
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- 被引次数: 0
出版历程
- 收稿日期: 2020-10-12
- 网络出版日期: 2021-08-16

Preparation of Microsphere β-cyclodextrin Polymer Filter Loss Reducer for Drilling Fluids

GAO Xin^1,2,
ZHONG Hanyi^{1,2
, ,},
QIU Zhengsong^1,2,
JIN Junbin³,
LI Daqi³,
LI Jia^1,2

1. Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China), Ministry of Education, Qingdao Shandong 266580;
2. School of Petroleum Engineering, China University of Petroleum (East China), Qingdao Shandong 266580;
3. Sinopec Research Institute of Petroleum Engineering, Beijing 100101

摘要

摘要: 针对现有环保型降滤失剂高温下易失效的问题，以β-环糊精为原料，ECH为交联剂，采用反相乳液聚合法合成一种环保型高温降滤失剂β-环糊精聚合物微球。分别采用红外光谱、扫描电镜、热重分析、粒度分布等测试方法对产物进行结构表征，并对高温降滤失性能进行评价。研究表明，β-环糊精聚合物微球粒径较为均匀，圆球度较好，平均粒径为42.88 μm，热稳定性较β-环糊精显著提高。180、200℃热滚后，有效降低膨润土基浆的滤失量，优于典型的抗高温降滤失剂；200℃热滚后高温高压降滤失效果突出。此外，β-环糊精聚合物微球对钻井液的流变性能影响很小。β-环糊精聚合物微球可以吸附大量水分子形成可变形的弹性微球，降低体系自由水含量，提高泥饼的压缩性。更重要的是，β-环糊精聚合物微球在高温下发生一定程度的降解，生成纳米颗粒，封堵泥饼孔隙，有效降低滤失量。β-环糊精聚合物微球高温降滤失性能优良，作用机理独特，显示出良好的应用前景。
- β-环糊精 /
- 聚合物微球 /
- 水基钻井液 /
- 降滤失 /
- 高温高压
Abstract: Aiming at the problem of the failure of the environmental-friendly filtration agent at high-temperature, β-cyclodextrin polymer microspheres with β-cyclodextrin as raw materials and ECH as cross-linker were synthesized by inverse emulsion polymerization. Infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, particle distribution and other test methods were used to characterize the structure of the product and evaluate the high-temperature filtration performance. It showed that β-cyclodextrin polymer microspheres have a uniform particle size and good sphericity, with an average particle size of 42.88 μm, and thermal stability is significantly better than β-cyclodextrin. After hot rolling at 180 and 200 ℃, it can effectively reduce the filtration loss of bentonite base slurry, which is better than the typical high-temperature filtration agent. After 200 ℃ hot rolling, the high-temperature and high-pressure filtration loss effect is outstanding. In addition, β-cyclodextrin polymer microspheres have little effect on the rheological properties of drilling fluids. β-cyclodextrin polymer microspheres can absorb a large number of water molecules to form deformable elastic microspheres, reduce the free water of the system, and improve the compressibility of mud cakes. More importantly, β-cyclodextrin polymer microspheres are partial degraded at high temperatures, generating nanoparticles, plugging mud cake pores, and effectively reduce filtration loss. β-cyclodextrin polymer microspheres have excellent high-temperature filtration loss performance, unique mechanism, and show good application prospects.
- β-Cyclodextrin /
- Polymer microsphere /
- Water-based drilling fluid /
- Filtration control /
- High temperature and high pressure

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参考文献(14)

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