Providing a comprehensive approach to oil well blowout risk assessment.
An object of class bn.fit. Refer to the documentation of bnlearn for details.
A discrete Bayesian network for risk assessment of oil well blowout (Fig. 3 of the referenced paper). Probabilities were given within the referenced paper. The vertices are:
(F, S);
Efficient hydrocarbon formation (F, S);
Negative diffraction pressure (F, S);
Sufficient permeability (F, S);
Low hydrostatic pressure (F, S);
Low and lost Annular Pressure Loss (F, S);
Surface line failure (F, S);
Power failure (F, S);
Pump failure (F, S);
Operator failure to notice adjustment (F, S);
Pump control failure (F, S);
Leakage from the pump’s fluid side (F, S);
Blowing (F, S);
Density reduction (F, S);
Volume reduction (F, S);
Inadequate holes fill up (F, S);
Mud loss (F, S);
Gas-cut mud (F, S);
Abnormal pressurize (F, S);
Swabbing while tripping (F, S);
Mud weight reduction (F, S);
Failure in Mud treatment equipment (F, S);
Formation (F, S);
Increasing mud weight (F, S);
Annular losses (F, S);
Bad cementing (F, S);
Casing failure (F, S);
Surging-piston effect (F, S);
Failure in centrifuge (F, S);
Failure in degasser (F, S);
Mud cleaner equipment in adjustment (F, S);
Power failure (F, S);
Agitator(mixer) failure (F, S);
Settlement of mud-weight substance (F, S);
Pulling the pipe too fast (F, S);
Using Mud with high viscosity and high gel strength (F, S);
Having balled up a bit (F, S);
Having thick wall cake (F, S);
Having a small clearance between the string and the hole (F, S);
Having and plugged drill string (F, S);
Directing the pipes at the speed inside the well (F, S);
Using mud of high viscosity & and high gel strength (F, S);
Having balled up (F, S);
Having Thick wall cake (F, S);
Having a small clearance between the string and the hole (F, S);
Using the float valve /nonreturn safety valve (F, S);
Satiarvand, M., Orak, N., Varshosaz, K., Hassan, E. M., & Cheraghi, M. (2023). Providing a comprehensive approach to oil well blowout risk assessment. Plos One, 18(12), e0296086.