Author

Xiang-Min Guo

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Open access Sep 2026

Wellbore Instability Mechanisms and Prediction of Four-Pressure Profiles in Deep Marine Carbonate Rocks

Deep marine carbonate formations are affected by multi-stage tectonism and dissolution, causing frequent wellbore instability and complex drilling events. This study integrates electrical imaging logs (FMI), core observations, and environmental scanning electron microscopy (SEM) to characterize the multi-scale structur...

Ye Chen, Yi-Jia Tang, Qiu-Tong Wang et al. · Processes · 0 citations

Open access Aug 2026

Multi-Objective Optimization of Annular Flow Structure for Coring Drilling Tools in Ultra-Deep Wells

Conventional coring drilling tools suffer from suboptimal annular flow design, leading to excessive pressure loss and hydraulic torque in ultra-deep well coring operations. To address this issue, we propose a systematic multi-objective optimization framework for the annular flow structure of single-acting double-tube c...

Lian-Bin Xia, Jie Wu, Xi Zhang et al. · Applied Sciences · 0 citations