Joint interpretation technology of favorable HDR geothermal resource exploration in Northern Songliao Basin

Hu, Xia; Lv, Jiancai; Li, Shiping; Guanglin, Du; Wang, Zaijun; Li, Haicheng; Zhu, Huanlai

doi:10.1016/j.uncres.2022.08.005

Cited by 11 publications

(3 citation statements)

References 3 publications

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“…For this numerical study conducted at an engineering scale, a hot dry rock (HDR) cubic model with edge length of 400 m was employed, which is a further work on the basis of our previous investigations (Wang et al, 2016a;Wang et al, 2016b;Hu et al, 2022;Ke et al, 2022;Wang et al, 2022;Wang et al, 2023). Within this model, the EGS system was situated at its center with dimensions of 250 m in length, 250 m in width, and 150 m in height (Figure 1).…”

Section: Numerical Model Descriptionmentioning

confidence: 99%

How does the space of production wells influence the heat extraction efficiency?–defined by a 3D modeling work in enhanced geothermal system (EGS)

Wang,

Zhang,

Zhu

et al. 2024

Front. Energy Res.

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The space of production well plays a crucial role in the heat extraction performance of the Enhanced Geothermal System (EGS), which have the potential to meet the growing global energy demand as a reliable energy source. Nonetheless, there has been insufficient research and attention focused on comprehending the impact of the space of production well on the efficiency and effectiveness of EGS. In this work, a series of numerical simulations were conducted to assess the impact of the space of production well on heat extraction efficiency in EGS. Three different cases were considered: Case 50 with 50 m production well spacing, Case 100 with 100 m production well spacing, and Case 150 with 150 m production well spacing. At the X-Y plane and Y-Z plane, the simulation results indicated that there were slight differences in temperature variation among the Case 50, Case 100 and Case 150. And the cooling area decreasing as the spacing of production wells decreased. Moreover, the delivery of cooling water via the injection well and its subsequent distribution to various reference points lead to a decline in temperature at each point, albeit with varying degrees of variation. Besides, the established efficiency (ef) for Case 50 is smaller than the Case 100 and Case 150 during the last 15 years. These findings contribute valuable insights to the exploration and exploitation of EGS systems and can serve as a guide for further research in this field.

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Section: Numerical Model Descriptionmentioning

confidence: 99%

How does the space of production wells influence the heat extraction efficiency?–defined by a 3D modeling work in enhanced geothermal system (EGS)

Wang,

Zhang,

Zhu

et al. 2024

Front. Energy Res.

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“…The input parameters for the model include the temperature log, thermal conductivity, density, porosity, heat production (presented above), and matrix heat capacity (Zhu, 2011), along with the current annual mean surface temperature of 8°C. Forward models were run for a 6,000‐m profile to avoid potential boundary effects, whereas inverse models were run for the 60–600 m interval, where an abnormally low heat flow implies a GST perturbation (as discussed above).…”

Section: Gst Inversion Methods and Input Datamentioning

confidence: 99%

“…Significant vertical components or horizontal fluid movements in the inclined layer could exist in these high‐porosity/permeability zones. Horizontal flow in deep confined aquifers is likely to be eastward in the Songliao Basin as the elevation of the western margin is approximately 900–1,200 m higher than the eastern, leading to correspondingly higher hydraulic heads (Zhu, 2011). Furthermore, previously published data indicate an increasing trend of heat flow from west to east, with values increasing from 44.4 to 95.0 mW m −2 (Wu & Xie, 1985).…”

Section: Study Sitementioning

confidence: 99%

Ground Surface Temperature History Since the Last Glacial Maximum in Northeast Asia: Reconstructions From the Borehole Geotherms of the International Continental Scientific Drilling Program

Jiang

Tian

Lü

et al. 2023

Geophysical Research Letters

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The Earth's temperature field is one of the controlling factors of petrophysical properties, such as seismic velocity and rheological strength. Borehole geothermal measurements open a window into the thermal regime of deep Earth, allowing extrapolations to heat flow and geotherms, with the combination of thermal conductivity and heat production measurements (Furlong & Chapman, 2013). Furthermore, the temperatures within the shallow boreholes are often perturbed by groundwater movement (Guillou-Frottier et al., 2013;Jessop, 1993) and changes in ground surface temperature (GST) induced by paleoclimate variations and anthropogenic land use (Gosnold et al., 2011;Majorowicz et al., 2012). Paleoclimatic signatures could perturb equilibrium heat flow densities to more than 2 km (Beltrami et al., 2014). Therefore, detailed borehole geothermal studies have the potential to provide unique constraints on both deep-earth thermal processes and GST changes.Available global heat-flow and paleoclimate studies primarily rely on shallow (<1,000 m) boreholes (Cuesta-Valero et al., 2021;Davies, 2013;Huang et al., 2000). Long-term climate changes cause significant perturbations in the measured heat flow, leading to deviations in the global heat-flow data set. Climatic perturbations, which are considered noise to determine the heat flow, can be used for GST reconstruction (Cermak and Bodri, 2011).

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Perspective from other rifts in the world

Macheyeki,

Kafumu

2024

The East African Rift System

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Joint interpretation technology of favorable HDR geothermal resource exploration in Northern Songliao Basin

Cited by 11 publications

References 3 publications

How does the space of production wells influence the heat extraction efficiency?–defined by a 3D modeling work in enhanced geothermal system (EGS)

How does the space of production wells influence the heat extraction efficiency?–defined by a 3D modeling work in enhanced geothermal system (EGS)

Ground Surface Temperature History Since the Last Glacial Maximum in Northeast Asia: Reconstructions From the Borehole Geotherms of the International Continental Scientific Drilling Program

Perspective from other rifts in the world

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