A blowout represent one of the major concerns associated with drilling, completion, maintenance and production of an oil field. Calculation of blowout rate is commonly one of the first steps in an Environmental Risk Analysis, ...

Shale gas production has had great impact on energy supply and fuel prices. Due to low permeability and reservoir complexity the recovery factors are still very low. A promising alternative to pressure depletion is injection ...

Kick tolerance is an evaluation of how large kick sizes an open hole section can withstand without threatening the formation integrity at the shoe. If a certain kick size cannot be handled safely, the planned open hole ...

The non-uniform saturations along the core is called capillary end effect. The capillary end effect is caused by the condition that the capillary pressure is zero outside the core. The presence of capillary end effect is ...

Increasing the drilling speed in wells while maintaining the operational safety standards is a challenge that many Petroleum Engineers have undertaken. In recent years, high complexity wells (Horizontal, Extended Reach, ...

This report documents the work that has gone into the design and optimization of a laboratory-scale drilling rig and bit design for the purpose of directional drilling and to participate in the Drillbotics competition. ...

Barite sag is a risky phenomenon to manage as particle settlement occurs in all types of drilling fluids containing weighting agents’ materials to achieve density. This leads to the phenomenon of sag which is known to ...

This thesis investigates how trajectory optimisation and position uncertainty calcu- lations can be performed on a laboratory drilling rig. The improvements made are to be used on the drilling rig designed and ...

Downhole Safety Valves (DHSVs) are periodically leak tested as part of the preventative maintenance program on an oil and gas producing facility. The last couple of years, the oil and gas industry on the Norwegian Continental ...

In the present situation of rig operations, the procedure of drill string design is crucial for the successful enlargement of any kind project. Besides of a pipe reliable material, the hoisting system of the rig must be ...