Patent ID: 11946350
Assignee: CHINA NATIONAL PETROLEUM CORPORATION
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 8:
9. The method for remotely shutting down the downhole unit of the rotary steering system from the ground, as recited in claim 8, wherein in the step e, forming the preset corresponding relationship between the function block and the diverting flow comprises specific steps of: presetting 9 function blocks, and installing a controllable diode on each of the 9 function blocks; using three diverting flows of 10%, 15% and 20% with different durations to represent the 9 function blocks; wherein the 10% diverting flow lasting for 2s means to shut down a 1 #function block; the 10% diverting flow lasting for 4s means to shut down a 2 #function block; the 10% diverting flow lasting for 6s means to shut down a 3 #function block; the 15% diverting flow lasting for 2s means to shut down a 4 #function block; the 15% diverting flow lasting for 4s means to shut down a 5 #function block; the 15% diverting flow lasting for 6s means to shut down a 6 #function block; the 20% diverting flow lasting for 2s means to shut down a 7 #function block; the 20% diverting flow lasting for 4s means to shut down a 8 #function block; and the 20% diverting flow lasting for 6s means to shut down a 9 #function block.