Definition - What does Erosion Drilling mean?
Erosion Drilling is the process by which materials are worn or removed during drilling. In drilling techniques of oil and gas industries, erosion is important as it can lead to an increase in time and cost of operation. When solid particles impact a solid surface, it leads to erosion that helps the engineers to drill the rock formation. Erosion bit of earth drilling operations consists of two nozzles; the first one is open for drilling fluid while the other is closed by means of pressure sensitive closure. The three important factors that govern erosion drilling are erosive particles, angle of impact and type of material.
Petropedia explains Erosion Drilling
Erosion as a type of material wear is found to be an important drilling tool in the oil and gas industry. Despite it being important, not much attention has been given to it in drilling engineering research. The process of erosion is based on the experimental and theoretical work done in material science and these conclusions were developed for transient stimulations of erosion of surface in 2D geometry. During Erosion Drilling, if the drilling tool fails, the eroded particles must be replaced. Erosion Drilling can lead to an increase in time and cost of operation and can be unsafe. Due to the failure of a toll, a blowout can occur resulting in loss of many lives. The quality of erosion can be measured as a rate of material removed from the surface and expressed as Er; this represents the weight of material removed by unit weight of particles impacted. Different types of damage can be caused due to different velocities and particles.