Drilling is one of the most expensive processes in the oil and gas exploration and
exploitation processes which is commonly performed with polycrystalline diamond compact …

How to increase the rock-breaking efficiency is the prerequisite for improving the rate of
penetration (ROP) in drilling. At present, the roller cone bits and Polycrystalline Diamond …

To reliably estimate drilling performance both tool–rock interaction laws along with a proper
rock brittleness index are required to be implemented. In this study, the performance of a …

Rock cutting is a challenging problem from a modeling perspective. The challenges come
from the complexity of the physics from the tool–rock interaction to the fracture process and …

The hybrid finite‐discrete element method (FDEM) is widely used for engineering
applications, which, however, is computationally expensive and needs further development …

Water can greatly influence the mechanical properties and dynamic fracture of underground
rock mass. However, the dynamic fragmentation and chip formation of water-soaked rock in …

It is well known that there exhibits a transition of failure mode from ductile to brittle in the rock
cutting process. The rock failure modes directly influence the design of cutter and the …

Mechanical rock breaking in different forms have found wide applications in the mining and
civil engineering industry such as drilling, tunnelling and grinding. A detailed understanding …

The numerical model of rock breaking by water jet was established based on finite element
method (FEM) and smoothed particle hydrodynamics (SPH) to research the efficiency of rock …

Over a three-well program the FORGE drill teams reduced well times by more than half, with
instantaneous ROP increased over 400% in the thick granite pay zone. At the same time …