Capillarity最新文献_第2页

Adsorption and desorption characteristics of coal seam gas under infrared radiation 红外辐射下煤层气吸附与解吸特性研究

Capillarity Pub Date : 2023-09-11 DOI: 10.46690/capi.2023.09.02

Yuying Tu, Yongli Zhang, Yubin Dong, Yulin Ma

{"title":"Adsorption and desorption characteristics of coal seam gas under infrared radiation","authors":"Yuying Tu, Yongli Zhang, Yubin Dong, Yulin Ma","doi":"10.46690/capi.2023.09.02","DOIUrl":"https://doi.org/10.46690/capi.2023.09.02","url":null,"abstract":"Infrared radiation technology can enhance rock permeability and promote methane desorption in coalbed methane thermal recovery. In this study, an experimental system with infrared radiation is developed to investigate the adsorption/desorption behavior of coal under different water contents. The results demonstrate that higher power levels of infrared radiation lead to decreased adsorption capacity and increased desorption capacity in coal. Specifically, employing 50 W infrared radiation results in a 30.9% increase in desorption capacity. Higher moisture content intensifies the desorption hysteresis effect, while this adverse impact can be mitigated by infrared radiation with greater power levels, exhibiting a stronger ability to reduce desorption-induced hysteresis. Additionally, a critical pressure for infrared radiation is established. Before and after this pressure, the influence of infrared radiation power on pressure sensitivity differs significantly. Finally, an improved Langmuir adsorption model considering infrared radiation power and moisture content is proposed and validated using experimental data. Our research expands the application of infrared radiation technology for enhanced coalbed methane recovery during actual mining operations. Document Type: Original article Cited as: Tu, Y., Zhang, Y., Dong, Y., Ma, Y. Adsorption and desorption characteristics of coal seam gas under infrared radiation. Capillarity, 2023, 8(3): 53-64. https://doi.org/10.46690/capi.2023.09.02","PeriodicalId":34047,"journal":{"name":"Capillarity","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136025724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The impact of wettability and fluid saturations on multiphase representative elementary volume estimations of micro-porous media 润湿性和流体饱和度对微孔介质多相代表性基本体积估算的影响

Capillarity Pub Date : 2023-09-05 DOI: 10.46690/capi.2023.10.01

Shaheryar T. Hussain, Klaus Regenauer-Lieb, Aleksandr Zhuravljov, Furqan Hussain, Sheik S. Rahman

{"title":"The impact of wettability and fluid saturations on multiphase representative elementary volume estimations of micro-porous media","authors":"Shaheryar T. Hussain, Klaus Regenauer-Lieb, Aleksandr Zhuravljov, Furqan Hussain, Sheik S. Rahman","doi":"10.46690/capi.2023.10.01","DOIUrl":"https://doi.org/10.46690/capi.2023.10.01","url":null,"abstract":"The occurrence of multi-phase flows in porous media is a complex phenomenon that involves multiple scales, ranging from individual pores to larger continuum scales. Upscaling frameworks have emerged as a response to the need for addressing the disparity between micro-scale processes and macroscopic modelling. Determination of the representative elementary volume is important for understanding fluid dynamics in micro-porous materials. The size of the representative elementary volume for multiphase flow in porous media is significantly affected by wettability and fluid saturations. Previous studies have overlooked this aspect by conducting simulations under conditions of constant medium wettability and fluid saturations. This study uses finite volume simulations with a volume of fluid approach for two distinct asymptotic homogenization methods, namely hydrodynamic bounds of relative permeability and thermodynamic bounds of entropy production. Strong wetting conditions with high wetting phase saturation were found to require a smaller sample size to establish representative elementary volume, while mixed-wettability scenarios necessitate the largest sample sizes. These findings improve our understanding of multiphase fluid flow behaviour in micro-porous materials and aid in enhancing techniques for scaling up observations and predictive modelling in engineering and environmental fields. Document Type: Short communication Cited as: Hussain, S. T., Regenauer-Lieb, K., Zhuravljov, A., Hussain, F., Rahman, S. S. The impact of wettability and fluid saturations on multiphase representative elementary volume estimations of micro-porous media. Capillarity, 2023, 9(1): 1-8. https://doi.org/10.46690/capi.2023.10.01","PeriodicalId":34047,"journal":{"name":"Capillarity","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135362598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of capillary pressure on micro-fracture propagation pressure during hydraulic fracturing in shales: An analytical model 页岩水力压裂过程中毛管压力对微裂缝扩展压力影响的解析模型

Capillarity Pub Date : 2023-08-19 DOI: 10.46690/capi.2023.09.01

Yunhu Lu, Yan Jin, Hongda Li

引用次数: 0

Recent research progress on imbibition system of nanoparticle-surfactant dispersions 纳米颗粒-表面活性剂分散体的渗吸体系研究进展

Capillarity Pub Date : 2023-08-04 DOI: 10.46690/capi.2023.08.02

Wenhao Shao, Jinzhou Yang, Haoyi Wang, Jia-Rong Chang, Hairong Wu, J. Hou

引用次数: 2

Effect of TiO2–SiO2 hybrid nanofluids on enhanced oil recovery process under different wettability conditions 不同润湿性条件下TiO2-SiO2杂化纳米流体对提高采收率的影响

Capillarity Pub Date : 2023-06-25 DOI: 10.46690/capi.2023.07.01

A. Goharzadeh, Yap Yit Fatt, J. Sangwai

{"title":"Effect of TiO2–SiO2 hybrid nanofluids on enhanced oil recovery process under different wettability conditions","authors":"A. Goharzadeh, Yap Yit Fatt, J. Sangwai","doi":"10.46690/capi.2023.07.01","DOIUrl":"https://doi.org/10.46690/capi.2023.07.01","url":null,"abstract":": The effect of TiO 2 –SiO 2 hybrid nanofluid on the enhanced oil recovery process is experimentally investigated. The flooding efficiency is measured for a flooding process in an initially oil-filled transparent micro-porous medium. Measurements were performed for two different surface wettability conditions, namely water-wet and neutral-wet. The average nanoparticle size, viscosity, surface tension, and contact angle of TiO 2 –SiO 2 hybrid nanofluid are reported. The flooding efficiency of the hybrid nanofluid is compared with that of SiO 2 nanofluid and TiO 2 nanofluid. The experimental results reveal that for neutral-wet surface condition, SiO 2 nanofluid achieves the best recovery, whereas for water-wet surface condition, TiO 2 –SiO 2 hybrid nanofluid produces the best flooding efficiency. Obtained results showed that TiO 2 nanofluid is unstable, with larger aggregated particles settling under gravity, and therefore not suitable for the flooding process by itself. The efficiency of hybrid nanofluid flooding depends significantly on fluid stability, wettability of the porous wall, surface tension, and contact angle of the three phases (crude oil, nanofluid solution, and solid surface). The TiO 2 –SiO 2 hybrid nanofluid reduces surface tension while increasing contact angle and solution stability.","PeriodicalId":34047,"journal":{"name":"Capillarity","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84569502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stress sensitivity of multiscale pore structure of shale gas reservoir under fracturing fluid imbibition 压裂液渗吸作用下页岩气藏多尺度孔隙结构应力敏感性研究

Capillarity Pub Date : 2023-06-20 DOI: 10.46690/capi.2023.07.02

Mingjun Chen, Maoling Yan, Yili Kang, Wangkun Cao, Jiajia Bai, Peisong Li

引用次数: 1

Molecular insights into structural and dynamic properties of water molecules in calcium silicate hydrate nanopores: The roles of pore size and temperature 水分子在水合硅酸钙纳米孔中的结构和动态特性:孔径和温度的作用

Capillarity Pub Date : 2023-06-19 DOI: 10.46690/capi.2023.08.01

S. Liu, H. A, Shengwen Tang, M. Kai, Zhibing Yang

引用次数: 0

Study on imbibition during the CO2 enhanced oil recovery in fractured tight sandstone reservoirs 裂缝性致密砂岩储层CO2增采过程中的渗吸研究

Capillarity Pub Date : 2023-06-14 DOI: 10.46690/capi.2023.06.02

Yuxia Wang, Qinghua Shang, Jingzhe Guo, Lifa Zhou

{"title":"Study on imbibition during the CO2 enhanced oil recovery in fractured tight sandstone reservoirs","authors":"Yuxia Wang, Qinghua Shang, Jingzhe Guo, Lifa Zhou","doi":"10.46690/capi.2023.06.02","DOIUrl":"https://doi.org/10.46690/capi.2023.06.02","url":null,"abstract":"CO2 enhanced oil recovery (CO2-EOR) is a key technology for improving the oil recovery of fractured tight reservoirs, and imbibition has been recognized as an important mechanism for oil recovery in low-permeability reservoirs. To clarify the imbibition role and influencing factors during the CO2-EOR process in fractured tight oil reservoirs and also improve the EOR mechanism, a high-temperature and high-pressure CO2 imbibition experiment was performed based on the nuclear magnetic resonance technology. The results show that high pressure and high permeability are beneficial to imbibition efficiency. The salinity of the imbibition fluid is not very sensitive to the imbibition recovery. In addition, the CO2 increases the imbibition speed and can also significantly improve the production rate and oil recovery. It is beneficial to increase the CO2 concentration to shorten the imbibition equilibrium time and enhance oil recovery. According to the results of the nuclear magnetic resonance study, although the nanopore can provide a greater imbibition force, the oil flow resistance is also larger, but CO2 can reduce the flow resistance of oil and be conducive to oil production in smaller pores. The inclusion of imbibition into the research category of CO2-EOR mechanism will be more in line with field practice and more scientific in fractured tight reservoirs, thus providing theoretical support for the development and improvement of the CO2-EOR technology. Document Type: Original article Cited as: Wang, Y., Shang, Q., Guo, J., Zhou, L. Study on imbibition during the CO2 enhanced oil recovery in fractured tight sandstone reservoirs. Capillarity, 2023, 7(3): 47-56. https://doi.org/10.46690/capi.2023.06.02","PeriodicalId":34047,"journal":{"name":"Capillarity","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136017091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Pore-scale fluid flow simulation coupling lattice Boltzmann method and pore network model 晶格玻尔兹曼方法与孔隙网络模型耦合的孔隙尺度流体流动模拟

Capillarity Pub Date : 2023-05-23 DOI: 10.46690/capi.2023.06.01

Jianlin Zhao, Yang Liu, Feifei Qin, L. Fei

引用次数: 4

Analysis of wettability alteration in low salinity water flooding using a zeta potential-based model 基于zeta电位模型的低矿化度水驱润湿性变化分析

Capillarity Pub Date : 2023-05-17 DOI: 10.46690/capi.2023.05.02

Lawrence Opoku Boampong, R. Rafati, Amin Sharifi Haddad

{"title":"Analysis of wettability alteration in low salinity water flooding using a zeta potential-based model","authors":"Lawrence Opoku Boampong, R. Rafati, Amin Sharifi Haddad","doi":"10.46690/capi.2023.05.02","DOIUrl":"https://doi.org/10.46690/capi.2023.05.02","url":null,"abstract":": This study introduces a zeta potential-based model which connects low salinity water flooding oil recovery to the reservoir wettability. The model assumed that the reservoir wettability is controlled by the electrostatic forces that exist between rock-brine and oil-brine interfaces. Therefore, it links the wettability to the zeta potentials present at the corresponding interfaces. Using the model, various literature oil recovery data were simulated and then statistically compared the trend of the oil recovery factor with the trend of the wettability indicator values. The Pearson correlation coefficient was used for the statistical analysis. The results from the suggested model were compared with the outputs computed from other pre-existing models for wettability alteration. The simulation outcome indicated that a strong relationship exists between reservoir wettability and the zeta potentials produced at the rock-brine and oil-brine interfaces. The Pearson correlation coefficient calculated for the suggested model exceeded 0.7 for all the experimental cases simulated. However, most of the other pre-existing models showed weak relationships between the wettability indicator values and the oil recovery factor, with some models producing the Pearson correlation coefficient below 0.2. This study highlights the role of zeta potentials at the rock-brine and oil-brine interfaces on the wettability alteration during low salinity water flooding. The suggested model can be utilized in the decision making and implementation of low salinity water flooding works.","PeriodicalId":34047,"journal":{"name":"Capillarity","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84906555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0