Numerical investigations of the PUGA geothermal reservoir with multistage hydraulic fractures and well patterns using fully coupled thermo-hydro-geomechanical modeling

Gudala, Manojkumar; Govindarajan, Suresh; Yan, Bicheng; Sun, Shuyu

doi:10.1016/j.energy.2022.124173

Cited by 28 publications

(11 citation statements)

References 38 publications

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“…A major challenge in the Puga field is the understanding of the fracture networks that presumably control fluid communication to the surface. A three-dimensional thermal-hydrogeomechanical model has been conducted to investigate the impact of engineered hydraulic fractures and well patterns on the performance of heat production (Gudala et al 2022). The study suggests that the geothermal life, reservoir impedance, and heat power are dependent on the number of natural (and engineered) hydraulic fractures, which are influenced considerably in the multistage model of the Puga geothermal reservoir.…”

Section: Conceptual Model Of Puga Geothermal Fieldmentioning

confidence: 99%

Outcrop analogue constraints on subsurface reservoir properties of the Puga geothermal field, NW Himalaya

Zimik

Thiele

Khanna

2023

Preprint

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There has been a large barrier in geothermal energy production in India due to the knowledge gap in understanding the subsurface uncertainties. In Puga, Ladakh, a significant amount of research has been done that estimates the availability of >5000 MWh of geothermal energy, but it remains untapped. It is largely due to a limited understanding of reservoir characteristics. In addition to the comprehensive review of literature, this study includes outcrop analogue studies to develop a better understanding of the subsurface geothermal system. Observing the geological settings, the lithologies and structures exposed in the cliffs adjacent to Puga valley are analogous to the subsurface, to depths of at least a few kilometres. A 3-D model of the outcrop is developed from aerial imagery collected using drone (quadcopter), that has been utilized to interpret fracture sets and foliation planes. Areas with intensely developed fabrics demonstrate the mechanical significance of these fabrics. The distinctive relationship between faults in the outcrop and the valley fill provides evidence for recent movement on the faults. Further, a variety of mineral fillings were observed in fractures across the outcrop which includes quartz±tourmaline veins, hydrothermal biotite, vuggy sub- and euhedral quartz, finegrained iron oxides and iron-rich travertine. Several exposures near the base of the cliffs show clear advanced argillic and sulfuric alteration. This study integrates digital outcrop mapping techniques along with constraints provided by the literature to derive a conceptual model of the Puga geothermal system. It provides an understanding of the structural architecture of the reservoir, which is an important parameter in developing the ‘Integrated reservoir model’.

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Section: Conceptual Model Of Puga Geothermal Fieldmentioning

confidence: 99%

Outcrop analogue constraints on subsurface reservoir properties of the Puga geothermal field, NW Himalaya

Zimik

Thiele

Khanna

2023

Preprint

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“…Define the distance between the first evaluation object and the minimum value, as shown in equation (9).…”

Section:  mentioning

confidence: 99%

“…We also explore the relationship between vehicle allocation, demand change and cost [3]. Many researchers focused on the study of the homotopy method [4], multiscale method [5,6], deep learning [7,8], thermo-hydro-geomechanical modelling [9].…”

Section: Introductionmentioning

confidence: 99%

Emergency Vehicle Intelligent Distribution System

Wang

Xia

Yang³

et al. 2022

J. Phys.: Conf. Ser.

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In this study, we developed a vehicle allocation model that can meet the requirements and cost best, the data related to the number of calls in each zone, and the variability required to respond to different types of calls. First, several indicators are extracted to quantify the advantages of station construction in each zone, and the hierarchical analysis method and TOPSIS are used to score each zone, and then select the stations that need to be built according to the score. Subsequently, according to the call requirements of each zone, its distance from the site, the amount of resources owned, etc, we develop a vehicle allocation model based on integer programming.

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“…The result indicated that lateral structures or geological changes in the deeper crust and mantle do have a high influence on gravity. Gudala et al [10] investigated the hydraulic fractures effect and well networks on the PUGA geothermal reservoir performance. The result indicated that thermal strain predominantly occurs within the fractures, while hydraulic fractures affect the mechanical strain in the rock matrix.…”

Section: Introductionmentioning

confidence: 99%

Performance comparison of transcritical cycle and organic Rankine cycle coupled with Chingshui geothermal reservoir

Lin,

Hsieh,

Yeh

2024

E3S Web of Conf.

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The Chingshui geothermal field stands out as the most significant geothermal field in Taiwan. Understanding the sustainability of geothermal energy is important for its long-term use. In the present study, a numerical model Chingshui reservoir based on geological conditions is developed by using a thermal-hydraulic-mechanical (THM) model in the COMSOL to evaluate the depth’s effect of the production well on the different binary cycles. The thermodynamic cycles of two configurations, namely the organic Rankine cycle (ORC) and transcritical Rankine cycle (TRC), are established by using MATLAB and coupled with the Chingshui reservoir through the COMSOL Livelink module. The study focuses on different well depths’ effects on the cycle performance. The results show the system efficiencies of the ORC and TRC under different well depths were 5.77% and 13.76%, and 9.64% and 16.31%, respectively.

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Numerical investigations of the PUGA geothermal reservoir with multistage hydraulic fractures and well patterns using fully coupled thermo-hydro-geomechanical modeling

Cited by 28 publications

References 38 publications

Outcrop analogue constraints on subsurface reservoir properties of the Puga geothermal field, NW Himalaya

Outcrop analogue constraints on subsurface reservoir properties of the Puga geothermal field, NW Himalaya

Emergency Vehicle Intelligent Distribution System

Performance comparison of transcritical cycle and organic Rankine cycle coupled with Chingshui geothermal reservoir

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