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

With the development of oil drilling technology and equipment, oil exploration is moving
towards deep water high temperature and high pressure (HTHP) formations. However …

The in-situ visualization of flow in the opaque pipes and annulus is a major cause of concern
for studying hole cleaning issues and multiphase flow patterns in the oil and gas industry …

Warning signs of a possible kick during drilling operations can either be primary (flow rate
increase and pit gain) or secondary (drilling break and pump pressure decrease). Drillers …

Abstract Pumps as Turbines (PATs) are known for their ability to replace conventional
turbines in Pico/micro-hydropower plants. However, selecting a suitable pump and …

Inadequate hole-cleaning in an annulus leads to several problems such as mechanical pipe
sticking, premature bit wear, formation fracturing, and/or slow drilling. However, the literature …

Cuttings removal out of the wellbore represents a real barrier for successful drilling
operations. The performance of hole cleaning is determined by several factors. The current …

Efficient hydraulics program of oil and gas wells has a crucial role for the optimization of
drilling process. In the present paper, a numerical study of power-law fluid flow through …

Increasing the cuttings transport efficiency in deviated wells is difficult due to the rolling
transport and cuttings settling on the low side of the annulus. Advancing flow rates and …

Featured Application Application of Newtonian and non-Newtonian fluids in horizontal flow
loop conditions for directional drilling operations. Abstract This study focused on …