Company Filing History:
2 out of 80 
2 out of 7 Years Active: 2024
Title: Dejun Zhang: Innovator in Downhole Technology
Introduction
Dejun Zhang is a notable inventor based in Sichuan, China, recognized for his contributions to downhole technology. He holds 2 patents that showcase his innovative approaches to improving drilling efficiency and safety.
Latest Patents
One of his latest patents is a "Jet flow adjustment method for rotary steerable downhole release." This method involves defining a diversion ratio of a jet nozzle through a ground control system and sending this information to a control unit of a downhole rotary steerable system. The control unit then determines the opening areas of the jet nozzle based on the diversion ratio and the equivalent channel area of the drilling tool. This invention allows for simple control and strong release ability, enhancing the overall efficiency of downhole operations.
Another significant patent is the "Method for remotely shutting down downhole unit of rotary steering system from ground." This method includes several steps, such as calculating pressure differences and adjusting the throttle valve to ensure the safe operation of the rotary steering system. This innovation aims to improve drilling efficiency, reduce costs, and minimize the frequency of inspections required during abnormal operations.
Career Highlights
Dejun Zhang has worked with prominent companies in the industry, including China National Petroleum Corporation and Cnpc Chuanqing Drilling Engineering Company Limited. His experience in these organizations has contributed to his expertise in downhole technologies and innovations.
Collaborations
Throughout his career, Zhang has collaborated with talented individuals such as Jing Bai and Jichuan Zhang. These partnerships have likely fostered a creative environment that encourages the development of groundbreaking technologies.
Conclusion
Dejun Zhang's contributions to downhole technology through his innovative patents demonstrate his commitment to enhancing drilling efficiency and safety. His work continues to impact the industry positively, showcasing the importance of innovation in engineering and technology.