Comparative Study on Effects of Different Crystallographic Materials on Self-healing of Fractures in Set Cement under CCUS Well Work Conditions
-
摘要: 为了尽快实现碳中和的目标，二氧化碳捕获、利用和封存（Carbon Capture，Utilization and Storage——CCUS）技术不可或缺。由于CCUS高温高压的环境引起较大的应力和温度波动，水泥环易形成裂缝对CO2的安全封存造成威胁。以碳酸钙晶须和氧化石墨烯作为引晶材料诱导水泥石裂缝表面碳化结晶，并研究其对水泥石裂缝自愈合进程的影响。实验结果表明，经过碳化自愈合反应不同的龄期后，分别掺入碳酸钙晶须和氧化石墨烯水泥石的抗压强度均高于空白水泥石。μ-CT的结果分析表明，掺入碳酸钙晶须和氧化石墨烯的水泥石裂缝体积的自愈率分别为55.24%和74.60%，要高于空白水泥石的18.32%；水泥石裂缝表面物相分析表明，随着碳化时间的增加，掺入引晶材料水泥石裂缝表面的CaCO3晶体含量高于空白水泥石。由此说明碳酸钙晶须和氧化石墨烯作为引晶材料可提高水泥石裂缝在CCUS工况下的碳化自愈合能力。Abstract: To achieve the goal of carbon neutrality as soon as possible, carbon capture, utilization and storage (CCUS) is an indispensable technology. High temperature high pressure environment in CCUS operations causes large stress and temperature fluctuations which in turn result in fractures in cement sheaths. These fractures in cement sheaths are a threat to the safe sequestration of CO2. To deal with this problem, calcium carbonate whisker and graphene oxide are used as crystallographic materials to induce carbonization crystallization on the surface of the fractures developed in set cement, and the effects of the crystallographic materials on the self-healing of the fractures in the set cement were studied. Experimental results show that after different periods of carbonization self-healing reaction, the compressive strengths of the set cement samples from cement slurries treated with calcium carbonate whisker and graphene oxide separately are all higher than the compressive strength of the blank set cement sample. μ-CT results show that the set cement samples containing calcium carbonate whisker and graphene oxide have percent self-healing of the volume of the fractures of 55.24% and 74.60%, respectively, higher than the percent self-healing of the volume of the fractures in the blank set cement sample, which is only 18.32%. Phase analyses of the substances at the surfaces of the fractures in the set cement samples show that as the time for the carbonization increases, the CaCO3 crystal contents at the surfaces of the fractures of the set cement samples containing crystallographic materials are higher than that of the blank set cement sample. From the experiment results it can be seen that the calcium carbonate whisker and the graphene oxide can be used as crystallographic materials to improve the carbonization self-healing ability of the fractures in cement sheath under CCUS work conditions.
-
Key words:
- Fractures /
- Carbonization self-healing /
- CCUS /
- Calcium carbonate whisker /
- Graphene oxide /
- μ-CT
-
表 1 G级油井水泥化学成分
化学
成分质量分
数/%化学
成分质量分
数/%化学
成分质量分
数/%Na2O 0.23 CaO 61.79 Fe2O3 4.15 Al2O3 3.37 SiO2 20.38 烧失量 2.61 MgO 1.95 K2O 0.45 其他 5.07 
下载: 导出CSV
表 2 水泥石碳化前后裂缝体积的变化率
水泥石 碳化前裂缝
体积/mm3碳化后裂缝
体积/mm3裂缝自愈率/
%1*-S 49.78 40.09 18.32 2*-S 48.58 12.34 74.60 3*-S 50.74 22.71 55.24
下载: 导出CSV
-
[1] RAO G M, ANDRIANIAINA H, WANG Y. Key driving factor analysis on industrialization and CO2 emission: based on data of Madagascar, China and the United States[J]. BioTechnology:an Indian Journal, 2014, 10(24):14835-14839. [2] HE G, ZHANG H L, XU Y, et al. China's clean power transition: current status and future prospect[J]. Resources,Conservation and Recycling, 2017, 121:3-10. [3] 秦积舜,李永亮,吴德斌,等. CCUS全球进展与中国对策建议[J]. 油气地质与采收率,2020,27(1):20-28. doi: 10.13673/j.cnki.cn37-1359/te.2020.01.003QIN Jishun, LI Yongliang, WU Debin, et al. CCUS global progress and China's policy suggestions[J]. Petroleum Geology and Recovery Efficiency, 2020, 27(1):20-28. doi: 10.13673/j.cnki.cn37-1359/te.2020.01.003 [4] 赵志强,张贺,焦畅,等. 全球CCUS技术和应用现状分析[J]. 现代化工,2021,41(4):5-10. doi: 10.16606/j.cnki.issn0253-4320.2021.04.002ZHAO Zhiqiang, ZHANG He, JIAO Chang, et al. Review on global CCUS technology and application[J]. Modern Chemical Industry, 2021, 41(4):5-10. doi: 10.16606/j.cnki.issn0253-4320.2021.04.002 [5] PIPICH V, SCHWAHN D. Polymorphic phase transition in liquid and supercritical carbon dioxide[J]. Scientific Reports, 2020, 10(1):11861. doi: 10.1038/s41598-020-68451-y [6] PETER M A, MUNTEAN A, MEIER S A, et al. Competition of several carbonation reactions in concrete: a parametric study[J]. Cement and Concrete Research, 2009, 38(12):1385-1393. [7] GARCÍA-GONZÁLEZ C A, HIDALGO A, ANDRADE C, et al. Modification of composition and microstructure of Portland cement pastes as a result of natural and supercritical carbonation procedures[J]. Industrial & Engineering Chemistry Research, 2006, 45(14):4985-4992. doi: 10.1021/ie0603363 [8] GONG P, ZHANG C M, WU Z Q, et al. Study on the effect of CaCO3 whiskers on carbonized self-healing cracks of cement paste: Application in CCUS cementing[J]. Construction and Building Materials, 2022, 321:126368. doi: 10.1016/j.conbuildmat.2022.126368 [9] HAN J D, PAN G H, SUN W, et al. Application of nanoindentation to investigate chemomechanical properties change of cement paste in the carbonation reaction[J]. Science China Technological Sciences, 2012, 55(3):616-622. doi: 10.1007/s11431-011-4571-1 [10] KUTCHKO B G, STRAZISAR B R, HUERTA N, et al. CO2 reaction with hydrated class H well cement under geologic sequestration conditions: effects of flyash admixtures[J]. Environmental Science and Technology, 2009, 43(10):3947-3952. doi: 10.1021/es803007e [11] 严思明,严圣东,吴亚楠,等. 功能材料对固井水泥石力学性能的影响[J]. 石油钻采工艺,2018,40(2):174-178. doi: 10.13639/j.odpt.2018.02.005YAN Siming, YAN Shengdong, WU Yanan, et al. Effect of functional materials on mechanical properties of hardened cement paste[J]. Oil Drilling & Production Technology, 2018, 40(2):174-178. doi: 10.13639/j.odpt.2018.02.005 [12] OMOSEBI O, MAHESHWARI H, AHMED R, et al. Degradation of well cement in HPHT acidic environment: Effects of CO2 concentration and pressure[J]. Cement and Concrete Composites, 2016, 74:54-70. doi: 10.1016/j.cemconcomp.2016.09.006 [13] CAO M, LI L, YIN H, et al. Microstructure and strength of calcium carbonate (CaCO3) whisker reinforced cement paste after exposed to high temperatures[J]. Fire Technology, 2019, 55(6):1983-2003. doi: 10.1007/s10694-019-00839-3 [14] 李凤霞,王海波,周彤,等. 页岩油储层裂缝对CO2吞吐效果的影响及孔隙动用特征[J]. 石油钻探技术,2022,50(2):38-44. doi: 10.11911/syztjs.2022006LI Fengxia, WANG Haibo, ZHOU Tong, et al. The influence of fractures in shale oil reservoirs on CO2 huff and puff and its pore production characteristics[J]. Petroleum Drilling Techniques, 2022, 50(2):38-44. doi: 10.11911/syztjs.2022006 [15] 李成嵩, 李社坤, 范明涛, 等. 高密度弹韧性水泥浆力学数值模拟[J]. 钻井液与完井液, 2023, 40（2）: 233-240LI Chengsong, LI Shekun, FAN Mingtao, et al.Numerical simulation study on mechanics of high density elastic and tough cement slurries[J]. Drilling Fluid & Completion Fluid, 2023, 40（2）: 233-240 [16] ZHANG D, GHOULEH Z, SHAO Y X. Review on carbonation curing of cement-based materials[J]. Journal of CO2 Utilization, 2017, 21:119-131. doi: 10.1016/j.jcou.2017.07.003 [17] 王芬,余军霞,肖春桥,等. CO2碳化法制备微米级球霰石型食品碳酸钙的研究[J]. 硅酸盐通报,2017,36(1):43-50,56.WANG Fen, YU Junxia, XIAO Chunqiao, et al. Preparation of mico-size food-grade vaterite CaCO3 by CO2 carbonization method[J]. Bulletin of the Chinese Ceramic Society, 2017, 36(1):43-50,56. [18] HOU D S, LU Z Y, ZHAO T J, et al. Reactive molecular simulation on the ordered crystal and disordered glass of the calcium silicate hydrate gel[J]. Ceramics International, 2016, 42(3):4333-4346. doi: 10.1016/j.ceramint.2015.11.112 -
点击查看大图
图(7) / 表(2)
计量
- 文章访问数: 325
- HTML全文浏览量: 136
- PDF下载量: 50
- 被引次数: 0
