InterPore2025

Case study for determination of safety mud window and analysis of fluid characteristics for wellbore stability in shale by coupling THMC method

21 May 2025, 15:05

1h 30m

Poster Presentation (MS17) Complex fluid and Fluid-Solid-Thermal coupled process in porous media: Modeling and Experiment Poster

Speaker

Yue Lang (State Key Laboratory of Continental Shale Oil)

Description

During drilling, the instability of the wellbore is always a severe problem, which might lead to borehole failure in shale formation. But this kind of borehole failure could be eased using the optimum mud weight and the better well trajectory. Many drilling problems include the kick or blowout, wellbore collapse, or lost circulation. This study applied a geo-mechanical model and rock failure criteria to the wellbore stability analysis to determine the safety mud weight. The numerical simulation was conducted using MATLAB. A rock-fluid coupled model was also solved using the finite element method under the ABAQUS framework, and the results were compared with those of the uncoupled model. This work would support solid foundation in wellbore stability during the drilling process, and would shed the light in computing the safety mud weight in high accurancy.