Using Laser Assisted Drilling Method with MPD and UBD Condition In Case Of Geothermal Resources

Abstract

Investigation of the wellbore instability induced by the application of plasma torch as a thermal assisted drilling and completion in carbonated reservoirs and transfer this method to geothermal industry is discussed. By using developed theory of elasticity the stresses and strains around the borehole are computed. Consequently, the wellbore instability analysis of thermal assisted drilling in Managed Pressure Drilling (MPD) and Underbalanced Drilling (UBD) is given with a proper drilling fluid. It is found that to evaluate the possibility of the wellbore instability in focusing on the effect of heat transfer some necessary regulations should be fulfilled. This work also mentioned on laboratory experiments of plasma torch interactions and rock texture. Limestone, Granite and Shale samples interact with temperature that generated from plasma torch with initiating and propagation fractures.