Abstract: Due to the complexity of the bottom layer of the Tarim Oilfield, with drilling depths exceeding 7000meters, customers have high requirements for technical indicators such as impact energy, grain size, and inclusion content of 4145H drilling tool products. optimizes the chemical composition of materials and improves key processes such as smelting, forging, and intermediate frequency heat treatment to meet the high-performance requirements of 4145H steel drill collars.