This inventor holds 6 USPTO granted patents and 1 published patent application. Top assignees: Mobil Oil Corporation, Atlantic Richfield Company. Active years: 1976-1994.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1976-1994
Title: The Innovative Contributions of Harry L. Chang
Introduction
Harry L. Chang is a notable inventor based in Dallas, TX (US), recognized for his significant contributions to the field of oil recovery. With a total of 6 patents to his name, Chang has developed innovative methods that enhance the efficiency of extracting oil from subterranean formations. His work has had a profound impact on the oil industry, particularly in improving recovery techniques.
Latest Patents
Among his latest patents, Chang has developed a method for improving the recovery of oil from a subterranean formation. This method involves injecting a slug of water equal in volume to at least about 20% of the hydrocarbon pore volume of the formation, followed by a slug of solvent. The solvent consists of materials such as carbon dioxide, nitrogen, methane, and hydrocarbons containing from 2 to about 5 carbon atoms. The process is repeated in cycles, gradually decreasing the amount of hydrocarbons in the solvent. Another significant patent is the enhanced oil recovery process with reduced gas drive mobility. This process involves injecting a liquid solution containing surfactants into the formation, followed by gas injection to effectively displace movable oil toward a production well. This method is particularly advantageous in formations where traditional recovery methods are less effective.
Career Highlights
Harry L. Chang has worked with prominent companies in the oil industry, including Mobil Oil Corporation and Atlantic Richfield Company. His experience in these organizations has contributed to his expertise in oil recovery technologies and has allowed him to develop innovative solutions that address industry challenges.
Collaborations
Chang has collaborated with notable professionals in his field, including James G. Kralik and Ralph F. Burdyn. These collaborations have further enriched his work and contributed to the advancement of oil recovery techniques.
Conclusion
Harry L. Chang's innovative patents and contributions to the oil recovery industry demonstrate his commitment to enhancing extraction methods. His work continues to influence the field, making significant strides in improving oil recovery efficiency.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile