The present study investigates the use of drilling mud and the reasons for its use. Drilling
mud is defined as the process of adding or injecting special materials into drilling wells …

The present study has investigated drilling problems and practical solutions regarding them.
It is almost certain that problems will occur when drilling a well, even in the most carefully …

In this study, 3D printing technology was used to prepare rock-like specimens containing
different flaw configurations. In particular, 3D printed Brazilian disc specimens with pre …

Rock masses contain various discontinuities such as flaws, cracks, join sets and more, each
significantly affect the crack initiation, propagation and coalescence patterns of new cracks …

A grain-based distinct element model (GBM) is used to investigate the influence of grain size
on the fracturing response of pre-cracked granite. A cohesive model is developed and …

In this paper, the inhibition property of polyethyleneimine (PEI) in montmorillonite solution
was studied. The inhibition property was evaluated by linear swelling test and rolling …

Borehole instability in naturally fractured rocks poses significant challenges to drilling.
Drilling mud invades the surrounding formations through natural fractures under the …

Ethylenediamine-modified graphene (EDA-G) performed high performance to plug
nanopores of shale formation. A simple method was designed to evaluate the plugging …

The study area is in the Kurdistan Region of Iraq, including the northwestern extension of the
Zagros suture zone, where present-day stress data derived from actual measurements is …

This study aims to investigate the feasibility of deriving in situ horizontal stresses from the
breakout width and depth using the analytical method. Twenty-three breakout data with …