Company Filing History:
7 out of 25 
2 out of 147 
1 out of 1 Years Active: 2023-2025
Title: Chang Lu: Innovator in Well Cementation Technologies
Introduction
Chang Lu is a prominent inventor based in Qingdao, China. He has made significant contributions to the field of well cementation technologies, holding a total of 7 patents. His innovative approaches have led to advancements in materials and methods used in the oil and gas industry.
Latest Patents
Chang Lu's latest patents include a sealing gel with delayed gelation for well cementation. This sealing gel comprises 2-3 parts of anionic polyacrylamide, 3-4 parts of cationic acrylamide, 1 part of stabilizer, 1 part of cross-linking agent, and 6 parts of distilled water. The stabilizer is created through the reaction of citric acid and ethylenediaminetetraacetic acid disodium, while the cross-linking agent is derived from the reaction of chromium lactate and chromium nicotinate. This sealing gel is designed to have pH sensitivity, which prolongs the gelation time, allowing it to be effectively added to the pre-liquid system.
Another notable patent is the anti-corrosion and low-heat-conduction annulus protection fluid for deep-sea oil and gas exploitation. This fluid includes a polymer solution, clear water, a thermally-insulating material, a corrosion inhibitor, and xanthan gum. The polymer solution is a mixture of a polymer and clear water in a specific mass ratio. This annulus protection fluid exhibits excellent thermal insulation performance and corrosion resistance, preventing the generation of hydrates and the decomposition of hydrate layers at a wellhead.
Career Highlights
Chang Lu has worked with esteemed institutions such as China University of Petroleum and Qingdao University of Technology. His work in these organizations has allowed him to develop and refine his innovative technologies, contributing to the advancement of the oil and gas sector.
Collaborations
Some of his notable coworkers include Huajie Liu and Shenglai Guo. Their collaborative efforts have further enhanced the research and development of well cementation technologies.
Conclusion
Chang Lu's contributions to well cementation technologies through his innovative patents have significantly impacted the oil and gas industry. His work continues to pave the way for advancements in this critical field.