Li Liu

Title: Li Liu and a Cold-Temperature Sub-Surface Safety Valve.

Introduction

Li Liu is an inventor associated with Rosharon, Texas, and Schlumberger Technology Corporation. His patent work addresses the design of sub-surface safety valves for demanding downhole conditions.

Latest Patents

Liu is credited with 1 patent: “Insert sub-surface safety valve (SSSV) for use in cold temperature.” The invention describes a valve designed for low-temperature downhole environments, which may arise when fluids such as carbon dioxide are injected. Such conditions can damage elastomer seals. The disclosed design instead uses non-elastomeric and metal-to-metal seals, including metal-to-metal threads between body joints, to avoid relying on elastomers in those connections and help reduce fatigue and damage.

Career Highlights

Liu’s listed patent highlights engineering for the reliability of downhole safety equipment in cold environments. The design focuses on seal and joint choices intended to withstand conditions that can compromise conventional elastomer components.

Collaborations

Liu is associated with Schlumberger Technology Corporation. His listed coworker is Garis Mccutcheon, who is a woman.

Conclusion

Li Liu’s patent presents a specialized approach to sub-surface safety valve design, using metal-to-metal and non-elastomeric sealing features to address the challenges of low-temperature downhole environments.