International Journal of Mining Science and Technology, 2023 In this study, an orthogonal array experiment is conducted by using a transparent fracture network replica. Image processing and theoretical analysis are performed to investigate the model sealing efficiency (SE), factors influencing SE, and the effect ...
Wanghua Sui, Gailing Zhang
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An Adjustable Bio-Sealing Method for Rock Fracture Leakage Mitigation
Journal of Rock Mechanics and Geotechnical EngineeringThis study proposed a repeated adjustable mixture injection strategy (RAM) based microbial induced carbonate precipitation (MICP) for efficient mitigation of rock fracture leakage. Granite fractures with small apertures were investigated, and bio-sealing
Zhihao Dong, Bin Shi, Chao-Sheng Tang
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Thermally Triggered Self-Reinforcing Double-Network Nanocomposite Hydrogels for Fracture Sealing Under Cyclic Steam Exposure [PDF]
GelsHydrogels used for fracture sealing during heavy-oil thermal recovery are repeatedly exposed to high-temperature steam, dehydration, pressure disturbance, and cooling, conditions that often lead to progressive network deterioration and loss of sealing ...
Guangzhi Cui +5 more
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Preparation and High-Temperature Fracture-Sealing Performance of an Oil-Absorbing Swelling Gel for Lost-Circulation Control in Oil-Based Drilling Fluids [PDF]
GelsLost circulation in fractured formations remains challenging for oil-based drilling fluids because conventional rigid bridging materials can be sensitive to fracture geometry and form porous seals.
Kun Zhang +8 more
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Research on the plugging mechanism in fractured formations and the drilling fluid system for while-drilling leak prevention [PDF]
Scientific ReportsDuring drilling operations, when fracture-induced lost circulation occurs, the unclear sealing mechanisms often lead to reliance on empirical methods for plugging without targeted strategies.
Jianwei Zhang +7 more
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Self-Sealing of Fractures in Indurated Claystones Measured by Water and Gas Flow
Journal of Rock Mechanics and Geotechnical Engineering, 2023 Self-sealing of fractures in the indurated Callovo-Oxfordian (COX) and Opalinus (OPA) claystones, which are considered as host rocks for disposal of radioactive waste, was investigated on artificially fractured samples.
Talandier Jean, Chun-Liang Zhang
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Frontiers in Earth Science, 2023 This study is focused on coal mass fracture grouting sealing and seepage reduction with coal-based grouting sealing materials. First, a new type of coal-based grouting sealing materials was developed and applied to the fractured coal sample in the ...
Yingjun Gao +11 more
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Finite element study on the initiation of new fractures in temporary plugging fracturing
Frontiers in Physics, 2023 Hydraulic fracturing technology is an important means to efficiently exploit unconventional oil and gas reservoirs. As the development of oil and gas fields continues at a high rate, the life cycle of oil and gas wells has been significantly shortened ...
Xuesong Xing +9 more
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Research on the quantitative method of fault sealing to coal seam gas
Meitan kexue jishu, 2023 Fault has the dual function of sealing and channel to coal seam gas, which mainly depends on the sealing ability of the fault. Aiming at the quantitative characterization method of fault sealing ability to gas, combined with the multi-element theory of ...
LIU Yongqian, HAN Xintao
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Evolution of Fault-Zone Hydromechanical Properties in Response to Different Cementation Processes
Lithosphere, 2022 Progressive cementation and sealing of fault-localized fractures impact crustal mass transport and the recovery of fault strength following slip events.
C. R. Romano, R. T. Williams
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