“…The push-the-bit rotary steerable drilling system has become the mainstream of current research and field promotion because of its simple structure and strong trajectory control ability [1][2][3][4][5][6][7]. However, with the continuous advancement of oil and gas exploration and development to deep, deep-sea, and unconventional fields, the continuous increase in the complexity of drilling strata and the properties of rock's hardness and anti-drilling, the continuous rise in the temperature and pressure in the bottom hole, the growing demand of drilling risk control, and the continuous reduction in drilling costs, the rotary steerable system needs to further improve its temperature and pressure resistance ability, further improve its trajectory control ability, further extend its working life, and further improve the rotary steerable drilling speed [8][9][10][11][12][13][14][15][16][17]. In the existing push-the-bit rotary steerable drilling system, the application point (power point) of the pushing force is between the fulcrum and the resistance point, whose lever principle is called the third type of lever, or "speed lever", and is also known as the laborious lever in physics.…”