Gas influx from reservoir into the wellbore during drilling, tripping, or other operations, is a
hazard. In the early stages, the influx may be nearly undetectable, but the kick can rapidly …

Most model-based control and estimation techniques put limitations on the structure and
complexity of the models to which they are applied. This has motivated the development of …

The simulation of gas/liquid two-phase flow, considering the heat transfer between the
annulus fluid and the surrounding environment, is of significance in predicting temperature …

The high solubility of the invaded gas in oil-based drilling fluids and the heat transfer
between annulus fluids and the surrounding formation make the accurate prediction and …

We propose a simple model of two-phase gas–liquid flow by imposing a quasi-equilibrium
on the mixture momentum balance of the classical transient drift-flux model. This reduces the …

The ability to perform accurate pore pressure and reservoir inflow estimation during a kick
incident is necessary, particularly when drilling in formations with narrow pressure margins …

Non-aqueous drilling fluids (such as synthetic-based mud) are frequently used to drill one or
more sections of an oil/gas well to reduce drilling problems such as shale sloughing …

The shift towards drilling more complex and challenging wells is continuing in the oil & gas
industry. Designing such complex wells with narrow error margins requires advanced well …

Modern approaches to process monitoring, optimization and control promise enhanced
robustness and performance through the merger of process knowledge encoded in …

A clear understanding of multiphase flow with phase change is of great significance in
productivity evaluation, process optimization, and production analysis, which is one of the …