Study on the improvement of geothermal cement properties by nanofluid composed of deep eutectic solvent and graphene oxide DOI Creative Commons
Wenxi Zhu, Bingjie Wang,

S. Cui

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Nov. 23, 2024

Guided by the goal of improving heat transfer efficiency geothermal cement, development high thermal conductivity fillers is urgently needed. Considering drawbacks carbon-based in deteriorating strength and fluidity this study proposes use green low-cost deep eutectic solvents (DES) loaded with graphene oxide to form nanofluids (GONF) improve connection between cement. The basic properties GONF-cement under storage conditions (60–100 °C, 0–36%NaCl) were reported, influence mechanism was analyzed. following interesting conclusions found: (1) oxygen-containing functional groups on surface connected active sites DES through formation hydrogen bond network, forming stable nanofluids. (2) Nanofluids proven be a (reduce material costs 90%) effective for enhancing mechanical cement while maintaining appropriate low variation density. (3) synergistic due fact that promotes hydration process providing reaction sites, significantly reducing porosity pore size dense structure enhances compressive shortens path. This enriches cementing technology provides support application exploration engineering.

Language: Английский

Hydrogeochemical Evolution, Isotopic Insights, and Genetic Models of Geothermal Water in Anhui Province, China DOI Open Access

Xiaoping Zhou,

Yinxue Peng,

Yunfeng Li

et al.

Water, Journal Year: 2025, Volume and Issue: 17(2), P. 236 - 236

Published: Jan. 16, 2025

Anhui Province is rich in geothermal water resources, making the study of its hydrochemical evolution and genetic models essential for scientific development sustainable utilization. This combines hydrogen–oxygen isotopic data from different regions to analyze hydrogeochemical characteristics recharge mechanisms basin-type mountainous-type waters. The results show that predominantly Cl–Na type, with water–rock interactions mainly including halite dissolution, gypsum dedolomitization, silicate hydrolysis. groundwater system relatively closed off, slow flow rates. In contrast, mountainous HCO3–Na·Ca, SO4–Na·Ca, SO4–Na types, primarily involving calcite dolomite dissolution. Enhanced precipitation infiltration due fault structures leads stronger an open-system characteristic. two types reveal structural thermal reservoirs under geological settings, highlighting significant control background on formation.

Language: Английский

Citations

0
Influence of roughness and slip velocity on the evolution of frictional strength DOI
Quan Gan,

Xinyuan Zhang,

Qiang Li

et al.

International Journal of Rock Mechanics and Mining Sciences, Journal Year: 2025, Volume and Issue: 188, P. 106076 - 106076

Published: Feb. 26, 2025

Language: Английский

Citations

0
Study on the Genetic Mechanism of Carbonate Rock Type Hot Mineral Water─A Case Study of Diaozhen, Jinan DOI Creative Commons

Mengyuan Hao,

Tianming Tang,

Chang Lu

et al.

ACS Omega, Journal Year: 2024, Volume and Issue: 9(24), P. 26458 - 26471

Published: June 6, 2024

Geothermal resources are one of the most valuable in renewable energy because their advantages green environmental protection, stability, and reliability. Carbonate rock type geothermal reservoirs have great research significance. abundant Shandong area. In this paper, we take carbonate-type reservoir Diaozhen area Jinan City as object, analyze regional geological conditions, identify structure. Through physical logging exploration, hydrochemical analysis, isotope testing, drilling reveal genesis mechanism construct genetic model carbonate system. The results show that belongs to a low-temperature field weak open karst thermal is mainly Ordovician Majiagou group limestone. insulation caprock overlying Quaternary Neogene strata with cumulative thickness 1376 m. geophysical exploration wells data verify Mingshui fracture seen around 1630–1645m, diorite intrusion at 1610m. connects deep shallow aquifers fluid migration channel. water from recharge atmospheric precipitation, rich ion content easy enrichment trace elements. recharged by circulation lateral runoff water. After long-distance migration, groundwater continuously absorbs heat surrounding heated raw part. Deep rises along water-conducting mixes cold form shallow,

Language: Английский

Citations

1
Evolution of Karst Geothermal Hydrochemical Characteristics and Genesis Mechanism in Northern Jinan, Shandong, Eastern China DOI Creative Commons
Shuchun Wang,

Z. A. Liu,

Wei Zhou

et al.

ACS Omega, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 16, 2024

The study of geothermal water hydrochemical characteristics and solute transport evolution can provide a reliable hydrogeochemical basis for the development protection resources. Currently, there is lack systematic research on mechanism fields in northern Jinan, which limits use fields. In this study, properties groundwater Jinan were described by analyzing 16 samples 3 cold samples. results show that during transformation from south to north, contents major ions all an increasing trend obvious zoning characteristics. type evolved HCO3–Ca HCO3–Ca·Mg type, then further SO4–Ca SO4–Ca·Na water. Dissolution–precipitation carbonate, sulfate, halite, silicate minerals one important processes controls chemical source mainly atmospheric precipitation Taiyi Mountain, with altitude 698.99–1464.91 m.s.a.l. thermal reservoir temperature area estimated be 55.62–98.16 °C. This paper proposes conceptual model karst flow system provides new idea exploring genesis under similar geological conditions.

Language: Английский

Citations

0
Study on the improvement of geothermal cement properties by nanofluid composed of deep eutectic solvent and graphene oxide DOI Creative Commons
Wenxi Zhu, Bingjie Wang,

S. Cui

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Nov. 23, 2024

Guided by the goal of improving heat transfer efficiency geothermal cement, development high thermal conductivity fillers is urgently needed. Considering drawbacks carbon-based in deteriorating strength and fluidity this study proposes use green low-cost deep eutectic solvents (DES) loaded with graphene oxide to form nanofluids (GONF) improve connection between cement. The basic properties GONF-cement under storage conditions (60–100 °C, 0–36%NaCl) were reported, influence mechanism was analyzed. following interesting conclusions found: (1) oxygen-containing functional groups on surface connected active sites DES through formation hydrogen bond network, forming stable nanofluids. (2) Nanofluids proven be a (reduce material costs 90%) effective for enhancing mechanical cement while maintaining appropriate low variation density. (3) synergistic due fact that promotes hydration process providing reaction sites, significantly reducing porosity pore size dense structure enhances compressive shortens path. This enriches cementing technology provides support application exploration engineering.

Language: Английский

Citations

0