Training complex machine learning and deep learning models has become straightforward
with the advent of highly efficient, open-source machine learning libraries. Supervised …

Nowadays, drill string technologies are among the leading fields in the industries of oil and
gas extraction and are widely used in the construction of subway tunnels. Due to their …

Due to the nonlinear bit-rock and drill–string–borehole interactions, the modeling and
analysis of drill string dynamics are a challenging work. These slender structures are …

Drilling is essential to extract subsurface hydrocarbons and geothermal energy, or store
waste fluids/gases underground. Drilling efficiency directly affects the economics of well …

Based on the measurement indexes monitored by the roof bolter while drilling, the rock
properties, fractures and other rock stratum characteristics can be obtained, which provide …

Drilling is an essential operation for subsurface hydrocarbon/geothermal energy extraction
or underground waste fluid/gas storage. Efficient drilling is the key to an economically viable …

Drilling vibrations significantly impact drilling operations with high costs due to early
downhole equipment failure and loss of productive time. Stick-slip vibrations, a severe form …

In this paper, a new whirling finite element model of the bottom hole assembly with static
push-the-bit rotary steerable system (RSBHA) is established. Initial imperfection, kinematic …

Drilling technology and specially drilling equipment has dramatically changed in the last 10
years through intensive and innovative technologies, both in terms of hardware and …

During the drilling process of the top rock layer with a roof bolter, monitoring certain resultant
signals can provide feedback on different rock lithology and thickness parameters of the …