Stuck pipe risk reducing due drilling fluid treating

Drilling Stuck Pipe Prediction in Iranian Oil Fields: An Artificial Neural Network Approach

The great potential of nanomaterials in drilling & drilling fluid applications

The continuous development of global economy with decreasing in available hydrocarbon sources and increasing discovery and extraction costs due to decrease in-situ oil and gas reservoir, displays the necessity of using new techniques for the improve rate of penetration and productivity in well. Nanotechnology has already contributed significantly to technological advances in the energy industri...

The great potential of nanomaterials in drilling & drilling fluid applications

The continuous development of global economy with decreasing in available hydrocarbon sources and increasing discovery and extraction costs due to decrease in-situ oil and gas reservoir, displays the necessity of using new techniques for the improve rate of penetration and productivity in well. Nanotechnology has already contributed significantly to technological advances in the energy industri...

Identifying, Treating, and Reducing Risk for Offenders with Mental Illness

Individuals with serious and oft en disabling mental illnesses like schizophrenia, bipolar disorder, and major depression are grossly overrepresented in the criminal justice system. Compared to the general population, the lifetime prevalence rate of these serious mental illnesses in the correctional population is twice as high for both men and women Of off enders with serious mental illness, ne...

Bounds on the response of a drilling pipe model

The drill pipe model described by the wave equation with boundary conditions is reduced through the d’Alembert transformation to a difference equation model. Assuming that the boundary condition at the bottom is perturbed by bounded additive noise, an ultimate bound for the velocity at the bottom of the pipe is obtained. The proposal of a Lyapunov functional for the distributed model allows to ...