Abstract: Well Du84?Xing H3001 is a horizontal well drilled for producing the remaining oil by means of infill drilling. Due to Well Du84 is in a dense well pattern, more and more wells need to avoid collision and bypass the barriers while drilling, great challenging to the drilling technology. MWD technology was adopted for real time prediction and analysis and tract control of the tract and to make a practicable operation scheme. Ultimately, four near?distance wells are successfully bypassed. The real tracks fully meet the requirements of engineer?ing design and geological conditions