build erosive wear mode of drilling stem. from the view of mathematics, express the relationship between erosive wear quality and major erosion factors.
建立鉆屑沖蚀的数学模型,从数学角度表达出了沖蚀磨损量与沖蚀影响因素间的关系。
establish the erosive wear mechanism of drilling string in air drilling and put forward that erosion wear is a substantial cause to promote drill string failure.