Study of Drilling Parameter Effects on Downlink Command Signal Transmission using the DOE Method

In the rotary steering drilling process, directional drilling engineers use downlink commands to control the drilling tool according to the wellbore trajectory, and actual downlink commands are affected by various transmission processes. To further investigate the effect of drilling parameters on downlink command transmission, shorten the drilling cycle, and improve the drilling efficiency by building a downlink command simulation model in Simulink to simulate the actual transmission process of the downlink signal in the well. The decoding correlation rate of downlink commands received by downhole tools was used as a measure for DOE tests. The Box-Behnken experimental design method was used to investigate the effect of drilling parameters on the magnitude of the decoding correlation rate of downlink command signals. After response surface analysis, the factors that significantly affect the decoding correlation of downlink commands are obtained. And the optimal solutions of each parameter are obtained when the decoding correlation rate reaches 0.96.