With the development of the oil industry and the ever-increasing demand for energy, technologies related to oil drilling are constantly being introduced. Early oil drilling mainly used manpower percussion drills, mechanical drills, rotary drills, etc., to drill a cylindrical hole of a certain diameter down or on one side of the selected surface to the underground oil and gas layer. This type of high-pressure pneumatic drills, down-the-hole drills and roller cone drills can be used with cemented carbide buttons to achieve the purpose of improving drilling efficiency and prolonging the service life of the drill bit. At present, after in-depth research, researchers have discovered a more effective high-pressure abrasive jet technology to exploit deep and marginal oil reservoirs. The high-pressure abrasive jet uses a high-pressure water jet as a carrier and adds a certain amount of abrasive particles to greatly enhance the impact of the jet and greatly improve the cutting efficiency of the rock formation. It has a wider application prospect.
The cemented carbide nozzle plays an important role in the high-pressure abrasive jet. It has high hardness, high strength and excellent wear and corrosion resistance. Usually in the process of oil drilling, it is generally under a high confining pressure environment, so the nozzle needs to withstand the high-speed impact of high-pressure abrasives during the working process, so it is easier to wear and fail. Ordinary materials, such as steel nozzles, are prone to thermal deformation or chipping, requiring frequent nozzle replacement, which reduces the efficiency of drilling. Especially when deep drilling is performed, it is extremely inconvenient to take out the drill bit for replacement. In addition, inlaying cemented carbide materials at the most easily worn parts of the nozzle is also a way to improve the performance of the nozzle and extend its service life. During the preparation of cemented carbide nozzles, the WC grain size can be reduced so that it can further improve the hardness and wear and corrosion resistance of the nozzle without reducing the toughness of the material.
热门资讯
