Heng Zhang

Title: Heng Zhang and an Innovation in Ultra-Deep Drilling

Introduction

Heng Zhang is an inventor associated with Xiantao, China, and Changjing River Scientific Research Institute. His work includes an invention designed to improve in-situ stress measurement in ultra-deep, non-vertical drilling.

Latest Patents

Zhang is credited with 1 patent: “In-situ stress measurement device and method for ultra-deep non-vertical drilling.” The invention uses a single-channel approach and bidirectional rolling equipment. Its rolling device allows downhole equipment to move circumferentially and back and forth, replacing sliding friction against the borehole wall with rolling friction during measurement.

The design also incorporates a split-type, axial-force-free circuit switching valve, providing a solution for single-pipe testing in non-vertical drilling. By reducing wear on both the equipment and borehole wall during installation and withdrawal, the device can help protect impression-measurement markings. It is intended to support efficient hydraulic-fracturing-based in-situ stress measurement in ultra-deep, non-vertical wells.

Career Highlights

Zhang’s listed patent reflects a focus on practical challenges in deep-drilling measurement, including equipment movement, friction, and the preservation of measurement evidence. His affiliation with Changjing River Scientific Research Institute connects this work to an institutional research setting.

Collaborations

Zhang’s listed coworkers include Liming Zhou and Xinhui Zhang.

Conclusion

Heng Zhang’s patent presents a specialized approach to reducing wear and supporting reliable in-situ stress measurement in ultra-deep, non-vertical drilling.