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Petroleum Geomechanics; Hydrocarbon Recovery; Reservoir Integrity; Hydraulic Fracturing; Shale Gas; Carbon Capture and Storage; Induced Seismicity; Geothermal Energy; Salt Formations; Unconventional Reservoirs;

Introduction

Petroleum geomechanics plays a pivotal role in optimizing hydrocarbon recovery and ensuring reservoir integrity, representing a cornerstone for sustainable hydrocarbon production [1].

This field intricately examines the application of geomechanical principles to enhance hydraulic fracturing in shale gas reservoirs, directly influencing fracture propagation and resource extraction efficiency [2].

Furthermore, geomechanical considerations are crucial for carbon capture and storage (CCS) projects, particularly in depleted oil and gas fields, where caprock integrity under prolonged CO2 injection pressures is paramount for long-term security [3].

Advanced geomechanical modeling is essential for predicting and mitigating induced seismicity related to fluid injection and extraction, a critical factor for public acceptance and environmental safety in energy projects [4].

The geomechanical behavior of sandstones under high-pressure CO2 flooding for enhanced oil recovery (EOR) is a significant area of study, providing data for designing stable CO2-EOR projects [5].

A novel numerical modeling technique has been developed to simulate geomechanical processes in fractured reservoirs, integrating discrete fracture networks with continuum models for accurate stress and flow predictions [6].

Geomechanical implications are also vital in geothermal energy extraction, focusing on reservoir stimulation and caprock integrity to ensure safe and efficient resource development [7].

The geomechanical characterization of salt formations is critical for the safe and reliable design of underground storage facilities, including hydrocarbon storage and CO2 sequestration, addressing creep deformation and wellbore stability [8].

Understanding the coupling between geomechanics and fluid flow in unconventional reservoirs is key, as geomechanical stresses significantly control permeability and alter reservoir productivity [9].

Finally, geomechanical risks associated with deep geothermal well drilling and operation, including wellbore stability and caprock failure, necessitate careful mitigation strategies through robust drilling and well design [10].

Description

The critical role of petroleum geomechanics in optimizing hydrocarbon recovery and ensuring reservoir integrity is highlighted, with advancements in understanding rock-fluid-stress interactions in unconventional reservoirs impacting stimulation effectiveness and long-term production [1].

This paper examines the application of geomechanical principles to hydraulic fracturing in shale gas reservoirs, detailing how poroelasticity and rock mechanics influence fracture propagation, containment, and resource extraction efficiency, leading to improved well design and fracture network optimization [2].

The study investigates the geomechanical challenges of carbon capture and storage (CCS) in depleted oil and gas fields, focusing on caprock integrity and injection well stability under prolonged CO2 injection, emphasizing the need for thorough assessments to prevent leakage and ensure sequestration security [3].

Advanced geomechanical modeling is explored for predicting and mitigating induced seismicity from fluid injection and extraction, discussing how pore pressure and effective stress variations can forecast seismic events and proposing strategies for operational adjustments to minimize risks [4].

This study focuses on the geomechanical behavior of sandstones during CO2 flooding for enhanced oil recovery (EOR), investigating CO2-brine-rock interactions' impact on rock strength, porosity, and permeability to ensure reservoir stability during EOR projects [5].

A novel numerical modeling technique is presented for simulating geomechanical processes in fractured reservoirs, addressing the integration of discrete fracture networks with continuum models to accurately predict fluid flow and stress distribution, vital for complex fracture system optimization [6].

This research investigates the geomechanical implications of geothermal energy extraction, examining reservoir stimulation, caprock integrity, and the influence of operational parameters on induced stresses and potential seismicity, offering insights for safe and efficient geothermal development [7].

The geomechanical behavior of salt formations for underground storage applications, including hydrocarbon storage and CO2 sequestration, is addressed, examining creep deformation, rock strength, and wellbore instability to contribute to the safe design of facilities in evaporite basins [8].

This study explores the coupling between geomechanics and fluid flow in unconventional reservoirs, highlighting how geomechanical stresses control permeability and flow pathways, and how changes in effective stress due to production and injection significantly alter reservoir productivity, with advanced modeling techniques capturing these interactions [9].

This paper investigates the geomechanical risks in deep geothermal well drilling and operation, focusing on wellbore stability, reservoir integrity, and potential caprock failure under thermal and mechanical stresses, offering practical guidance for risk mitigation through careful drilling and well design [10].

Conclusion

This collection of research underscores the critical importance of geomechanics across various energy sectors. It details how geomechanical principles optimize hydrocarbon recovery, enhance hydraulic fracturing, and ensure the integrity of reservoirs and caprocks for both conventional and unconventional resources. The studies also address geomechanical considerations for carbon capture and storage, the prediction and mitigation of induced seismicity, and the geomechanical behavior of formations like salt for underground storage. Advanced modeling techniques are highlighted for simulating complex geomechanical processes in fractured reservoirs and for analyzing the coupled geomechanical and fluid flow behaviors in unconventional systems. Furthermore, geomechanics plays a vital role in the safe and efficient development of geothermal energy, from drilling to operational integrity. Ultimately, these works emphasize the necessity of robust geomechanical assessments for managing risks, improving resource extraction, and ensuring the long-term sustainability and safety of energy operations.

References

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