Based abrasive water jet cutting efficiency and high rotating jet good scalability characteristics

The traditional radial drilling technology requires forging mill and a large diameter casing reaming, operating procedures and more difficult construction. Casing window radial horizontal well technology simply open the casing with a diameter of about 30 mm of the window, to the formation of radial drilling channels. At present, foreign multi-use mechanical window. Based abrasive water jet cutting efficiency and high rotating jet good scalability characteristics, the author proposes a  synthetic diamond  jet technology line window, and through numerical simulation and laboratory tests to analyze the combination of means for the further development and improvement of open  Polycrystalline diamond  technique provides a theoretical basis. Injury and damage criterion variable in metallic materials RVE, assuming a  Abrasive grinding  area A normal vector is n, the micro-cracks or micro-voids exist, resulting in an effective bearing area A Zhou ratio A small, that Zhou A = A-AD. AD is considering stress concentration defects and defect area after interaction. In the assumption of isotropy of the premise, the damage variable defined as a defect area and the total area ratio, i.e. D = ADA = A-Zhou AA. (2) when D = 0, the metal material is non-destructive condition; D = 1 , the metal material is completely broken;