固井水泥环微裂缝二次水化自愈合性能

柳华杰; 张宇迪; 朱睿; Syed; 张桦楠; 李召朋; Sergey Chernyshov

doi:10.12358/j.issn.1001-5620.2026.05.011

固井水泥环微裂缝二次水化自愈合性能

doi: 10.12358/j.issn.1001-5620.2026.05.011

柳华杰^{1, 2, 3,},
张宇迪^{1, 2, 3},
朱睿²,
Syed^{1, 2, 3},
张桦楠^{1, 2, 3},
李召朋^{1, 2, 3},
Sergey Chernyshov⁴

1.
深层油气全国重点实验室（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.
山东省海洋油气与水合物开发重点实验室，山东青岛 266580
4.
彼尔姆国立研究理工大学石油与天然气技术系, 俄罗斯彼尔姆 614990

基金项目: 国家重点研发计划资助“中国-沙特石油能源“一带一路”联合实验室建设与联合研究”（2022YFE0203400）；中央高校基本科研业务费专项资金资助“适用于深层的压裂液破胶剂控释微球研发”（25CX02005A）。

详细信息

作者简介:
柳华杰，博士，副教授，研究方向为油气井固完井工程。E-mail：liuhuajieupc@163.com

中图分类号: TE256
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- 文章访问数: 22
- HTML全文浏览量: 8
- PDF下载量: 2
- 被引次数: 0
出版历程
- 收稿日期: 2026-04-15
- 修回日期: 2026-05-20
- 刊出日期: 2026-10-01

Experimental Study on Secondary-hydration Self-healing Performance of Microcracks in Wellbore Cement Sheaths

Liu Huajie^{1, 2, 3
,},
Zhang Yudi^{1, 2, 3},
Zhu Rui²,
Syed^{1, 2, 3},
Zhang Huanan^{1, 2, 3},
Li Shaopeng^{1, 2, 3},
Sergey Chernyshov⁴

1.
State Key Laboratory of Deep Oil and Gas, China University of Petroleum (East China), Qingdao, Shandong 266580
2.
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580
3.
Shandong Key Laboratory of Offshore Oil & Gas and Hydrate Development, Qingdao, Shandong 266580
4.
Department of Oil and Gas Technology, Perm State Research and Technology University, Perm, Russia 614990

摘要

摘要: 固井水泥环密封完整性直接关系到油气井服役安全与寿命，复杂工况易引发微裂缝，早期未修复将导致腐蚀性流体侵入、套管劣化等风险，现有研究忽视短期修复与流变性能。以G级高抗油井水泥为基体，选取6种浅活性材料为二次水化型自愈合剂，经单掺筛选与复合体系构建，从流变性能、抗压强度及渗透率3个方面探究短期3 d、7 d的自愈合效果。结果表明，单掺体系中10%硅粉与1%硅酸钠修复性能最优，养护7 d强度恢复率分别达70.6%和78.5%；复合体系呈显著协同作用，20%粉煤灰+1%硅酸钠综合性能最佳，养护7 d强度恢复率为72.37%、渗透率降低率为60.69%，成本更低且施工稳定。研发的自愈合剂破解了传统材料“反应慢、成本高”的瓶颈，为油气井早期井筒修复提供支撑，对保障井筒完整性、降本增效具有重要工程意义。
- 固井水泥 /
- 微裂缝 /
- 结晶沉淀型自愈合剂
Abstract: The sealing integrity of cement sheaths in well cementing is directly related to the operational safety and service life of oil and gas wells. However, complex service conditions can readily induce microcracks, which, if not repaired at an early stage, may lead to corrosive fluid invasion, casing deterioration, and other risks. Existing studies have paid insufficient attention to short-term repair performance and rheological properties. In this paper, Class G high-sulfate-resistant oil well cement was used as the base material, and six latent reactive materials were selected as secondary-hydration self-healing agents. Through single-additive screening and the construction of composite systems, the short-term self-healing effects after 3 and 7 days of curing were investigated in terms of rheological properties, compressive strength, and permeability. The results show that among the single-additive systems, 10% silica fume and 1% sodium silicate exhibit the best repair performance, with strength recovery rates reaching 70.6% and 78.5%, respectively, after 7 d of curing. The composite systems exhibit a significant synergistic effect. Among them, the system containing 20% fly ash and 1% sodium silicate exhibits the best overall performance, with a strength recovery rate of 72.37% and a permeability reduction rate of 60.69% after 7 d of curing, while also offering lower cost and good field applicability. The developed self-healing agent overcomes the limitations of traditional materials, such as slow reaction and high cost, and provides technical support for early-stage wellbore repair in oil and gas wells. It is of great engineering significance for ensuring wellbore integrity, reducing costs, and improving efficiency.
- Well cement /
- Microcrack /
- Crystalline-precipitation self-healing agent

HTML全文

图 1 单一自愈合剂短期自愈合性能综合对比

下载: 全尺寸图片幻灯片

图 2 硅粉+偏高岭土复合水泥浆体系自愈合性能对比

下载: 全尺寸图片幻灯片

图 3 硅酸钠+粉煤灰复合体系自愈合性能综合对比图

下载: 全尺寸图片幻灯片

图 4 投产后环空压力监测对比

下载: 全尺寸图片幻灯片

表 1 单一浅活性材料流变性能表

浅活性材料	t_稠化/min （80 ℃）	φ₆₀₀/φ₃₀₀/φ₂₀₀/ φ₁₀₀/φ₆/φ₃	PV/ mPa·s	YP/ Pa
纯水泥	183	105/54/35/17/2/1	51	1.5
5%偏高岭土	214	137/68/45/22/1/0.5	69	0.5
7%偏高岭土	217	124/62/37/20/2/1	62	0
9%偏高岭土	216	110/58/39/19/1/0.5	52	3.0
5%硅粉	215	172/96/65/32/1.5/0.5	76	10.0
10%硅粉	195	249/134/92/47/2/1	115	9.5
15%硅粉	203	224/118/80/42/3/1	106	6.0
10%粉煤灰	205	176/91/60/29/2/1	85	3.0
15%粉煤灰	213	179/94/61/31/2/1	85	4.5
20%粉煤灰	220	181/96/63/32/2/1	85	5.5
10%矿渣	172	131/73/55/31/3/1	58	7.7
15%矿渣	170	136/77/59/40/38/27	59	9.2
20%矿渣	163	143/75/52/29/5/1	68	3.6
3%氧化镁		162/85/56/27/1.5/0.5	77	4.1
5%氧化镁		175/89/61/29/2/1	86	1.5
10%氧化镁		191/99/67/33/3/1	92	3.6
1%硅酸钠	26	140/69/45/22/1/0.5	71	1.0
3%硅酸钠		169/107/75/60/45/32	62	23.0
5%硅酸钠		154/79/55/32/7/2	75	2.0

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表 2 复合硅粉+偏高岭土体系流变性能

偏高岭土/%	硅粉/ %	t_稠化/min （80 ℃）	φ₆₀₀/φ₃₀₀/φ₂₀₀/ φ₁₀₀/φ₆/φ₃	PV/ mPa·s	YP/ Pa
0	0	183	105/54/35/17/2/1	51	1.5
5	10	186	178/93/67/31/2/0.5	85	4.1
10	10	175	192/98/67/34/2/1	94	2.0
15	10	172	210/107/72/38/3/1	103	2.0
20	10	115	220/118/84/45/5/3	102	8.2
25	10	90	224/123/90/46/4/3	101	11.2

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表 3 复合硅酸钠+粉煤灰体系流变性能表

硅酸钠/%	粉煤灰/%	t_稠化/min （80 ℃）	φ₆₀₀/φ₃₀₀/φ₂₀₀/ φ₁₀₀/φ₆/φ₃	PV/ mPa·s	YP/ Pa
0	0	183	105/54/35/17/2/1	51	1.5
0.1	20	195	175/95/71/44/5/3	80	7.7
0.4	20	177	169/97/72/46/22/6	72	12.8
0.7	20	165	217/106/69/45/6/3	111	2.6
1.0	20	147	235/120/82/41/3/1	115	2.6
3.0	20		295/185/152/121/50/11	110	38.3

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