聚合物纳米复合增黏剂的制备

宋祥先; 王本利; 仇恒彬; 慕熙荣; 谢彬强

doi:10.12358/j.issn.1001-5620.2024.06.005

聚合物纳米复合增黏剂的制备

doi: 10.12358/j.issn.1001-5620.2024.06.005

宋祥先^1,,
王本利²,
仇恒彬³,
慕熙荣²,
谢彬强^{1, 4, ,}

1.
长江大学石油工程学院, 湖北武汉 430100
2.
中国石化胜利石油工程有限公司黄河钻井总公司, 山东东营 257513
3.
中石化胜利石油工程有限公司钻井工艺研究院, 山东东营 257000
4.
油气钻采工程湖北省重点实验室, 湖北武汉 430100

基金项目: 长江大学·非常规油气省部共建协同创新中心开放基金资助项目“页岩地层用温敏缔合型封堵剂研制及其机理研究”（UOG2024-11）。

详细信息

作者简介:
宋祥先，在读硕士研究生，从事油田化学方面的研究。电话 18294408685；E-mail：2277378125@qq.com

通讯作者:
谢彬强，E-mail：binqiangxie@163.com。

中图分类号: TE 254.4
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出版历程
- 收稿日期: 2024-07-13
- 修回日期: 2024-08-25
- 刊出日期: 2024-11-30

Preparation and Performance Evaluation of Polymer Nanocomposite Viscosifier

1.
School of Petroleum Engineering, Yangtze University, Wuhan, Hubei 430100
2.
Yellow River Drilling Corporation of Sinopec Shengli Oilfield Service Corporation, Dongying, Shandong 257513
3.
Drilling Technology Research Institute of SINOPEC Shengli Petroleum Engineering Co. Ltd, Dongying, Shandong 257000
4.
Hubei Key Laboratory of Oil and Gas Drilling and Production Engineering, Wuhan, Hubei 430100

摘要

摘要: 针对目前常用的钻井液增黏剂在高温高盐下增黏性能较差，无法适用于高温深部储层的问题，以2-丙烯酰胺基-2-甲基丙磺酸（AMPS）、N，N-二乙基-2-丙烯酰胺（DEAM）、N，N-亚甲基双丙烯酰胺（MBA）和改性纳米SiO₂颗粒（E-np）为原料，通过原位聚合制备了一种高温增稠性能良好的纳米复合材料E-APNC。通过正交实验对合成条件进行了优化，使用傅里叶变换红外光谱（FT-IR）确定了E-APNC的分子结构，考察了E-APNC的增黏性能、抗剪切性能、耐温性能和耐温抗盐性能。通过24 h的静置实验，考察了nps、N-np、和E-np的分散性，E-np具有更好的分散性。研究结果表明，在常温下1%加量的E-APNC溶液表观黏度达66 mPa·s，与APNC相比具有良好的增黏性能；加量为1%、剪切速率为1021 s⁻¹的E-APNC溶液黏度可达60 mPa·s；在20%NaCl溶液中，200 ℃老化16 h后，E-APNC溶液的表观黏度保持率达65%。与聚合物APNC和N-APNC相比，E-APNC具有更好的抗剪切性能与耐温抗盐性能。
- 复合材料 /
- SiO₂改性 /
- 增黏性能 /
- 耐温抗盐
Abstract: In response to conventional viscosifiers exhibiting poor performance under high temperature and high salt conditions rendering them ineffective for high-temperature deep reservoirs, this study prepared a novel nanocomposite (E-APNC) via in situ polymerization using 2-acrylamido-2-methylpropanesulfonic acid, N, N diethylacrylamide, N, N methylenebisacrylamide and nano-SiO₂ particles (E-np) as raw materials. E-APNC synthetic condition was optimized by orthogonal experimentation, and the molecular structure of E-APNC was evidenced by FT-IR, E-APNC polymer fluid displayed good thickening performance at high temperatures with excellent rheological parameter such as viscosity increase, shear resistance, thermal stability, and salt tolerance. Through the 24 h static experiment, E-np has better dispersibility compared with nps and N-np. At 1%E-APNC, the apparent viscosity at room temperature reached 66 mPa·s, whereas the viscosity shear rate reached 60 mPa·s at high shear rate of 1021 s⁻¹, showcasing the excellent viscosity increasing ability and good anti-shear performance of E-APNC. The apparent viscosity retention rate of the drilling fluid was 65% after aging at 200 ℃ for 16 h under 20% NaCl concentration probing its good temperature and salt resistance performance. Compared with polymer APNC and N-APNC, E-APNC showed strong shear resistance and good temperature resistance, salt resistance.
- Composite material /
- SiO₂ modification /
- Viscosifier /
- Temperature and salt tolerant

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图 1 纳米SiO₂的改性

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图 2 E-APNC的合成路线

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图 3 纳米颗粒在清水中的分散性

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图 4 APNC和E-APNC的红外光谱图

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图 5 APNC、N-APNC和E-APNC溶液黏度随温度的变化

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图 6 不同溶液老化后黏度随剪切速率的变化

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图 7 老化温度对APNC、N-APNC和E-APNC溶液表观黏度保持率的影响

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图 8 盐浓度对APNC、N-APNC和E-APNC溶液表观黏度保持率的影响

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图 9 1%E-APNC在不同盐浓度及温度下溶液表观黏度保持率的变化

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表 1 正交实验因素水平表

水平	T_反应/ ℃（A）	单体配比（B）	纳米材料/% （C）
1	50	AMPS∶DEAM=40%∶60%	2.5
2	55	AMPS∶DEAM=45%∶55%	3.0
3	60	AMPS∶DEAM=50%∶50%	3.5
4	65	AMPS∶DEAM=60%∶40%	4.0

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表 2 E-APNC正交实验结果

编号	反应温度	单体配比	纳米材料加量	AV保持率/%
1	A1	B1	C1	41.23
2	A1	B2	C2	38.45
3	A1	B3	C3	45.65
4	A1	B4	C4	35.66
5	A2	B1	C2	45.98
6	A2	B2	C1	40.91
7	A2	B3	C4	47.02
8	A2	B4	C3	41.75
9	A3	B1	C3	39.37
10	A3	B2	C4	35.35
11	A3	B3	C1	42.10
12	A3	B4	C2	46.28
13	A4	B1	C4	37.62
14	A4	B2	C3	48.68
15	A4	B3	C2	44.52
16	A4	B4	C1	40.54
K₁	40.248	41.050	41.195
K₂	43.915	40.848	43.808
K₃	40.775	44.820	43.863
K₄	42.840	41.058	38.913
R	3.668	3.975	4.950

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