Dazhi Qian

Title: **Dazhi Qian: Innovator in Horizontal Well Logging Technology**

Introduction

Dazhi Qian is a prominent inventor based in Sichuan, China, recognized for his contributions to the field of engineering physics, particularly in the area of logging methods for oil extraction. His innovative approach has led to the development of a valuable patent that addresses high watercut problems in horizontal wells, improving efficiency and reducing operational risks.

Latest Patents

Dazhi Qian holds a patent for a "Logging method for locating watered zone in horizontal well with high watercut problem by isotope labeling." This groundbreaking method involves a series of operations, starting with the solidification of an isotope into a water-soluble carrier. The device is then connected to a tubing set within the horizontal segment of the well. As the water-soluble carrier dissolves, it releases isotopes at a rate proportional to the water flow. The process further includes the operation of a lift-up pump and production logging, culminating in continuous gamma-ray energy-spectrum analysis of the produced water to accurately locate the watered zones. This patented method not only minimizes operation risks but also conserves platform time and reduces logging costs.

Career Highlights

Dazhi Qian is affiliated with the Institute of Nuclear Physics and Chemistry at the China Academy of Engineering Physics. His work here focuses on developing advanced techniques to enhance the safety and efficiency of oil extraction processes. His innovative contributions are essential in optimizing performance in challenging extraction environments.

Collaborations

Throughout his career, Dazhi Qian has collaborated with notable colleagues, including Wen Huang and Shuming Peng. These partnerships have fostered an environment of innovation, allowing for the refinement and enhancement of various logging methodologies within the field of engineering physics.

Conclusion

Dazhi Qian's inventive spirit and dedication to advancing logging technology in horizontal wells are commendable. His patented method not only showcases his expertise but also significantly contributes to the efficiency and safety of oil extraction processes. As he continues to innovate at the Institute of Nuclear Physics and Chemistry, Dazhi Qian remains a key figure in the evolution of engineering solutions for the oil industry.