The rheological properties of drilling fluids are very important for the precise estimation of
the frictional pressure losses during drilling operations. The first experiences of inline …

A spatial model of the 3D formation drillability field is crucial for drilling optimization in the
petroleum area. In this paper, a new spatial modeling method is proposed for the 3D …

Torque and drag models have been used for several decades to calculate tension and
torque profiles along drillstrings, casing strings, and liner strings. Buoyancy forces contribute …

Due to the nature of drilling operations, there are several companies collecting data at the
rig. The data acquisition system of each company applies its own timestamp to the data …

The ability to predict the response of a drill bit to the topside axial and rotational velocities of
the drill-string is a prerequisite for any system aimed at automatically controlling the drilling …

The drill string used in drilling oil and gas wells is a long and slender structure that is
confined by the wellbore wall and subject to significant axial, lateral and torsional vibrations …

Abstract This Extended Reach Drilling (ERD) field re-development predominantly from four
artificial islands of a giant offshore field in the United Arab Emirates (UAE) requires in most …

Abstract Model-based engineering has become more prevalent in the drilling industry over
the last few decades. While there is great value in using models, a realistic understanding of …

Tripping operations are the source of possible serious drilling incidents caused by swab and
surge pressures exceeding the geo-pressure margins. Yet, it is difficult to monitor the actual …

Drilling systems are widely used today for various purposes, but in harsh environments,
such as the Arctic or space, it is hard to utilize these conventional systems because they …