{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "Method of recovering hydrocarbons from an underground formation", "item": "https://www.patentleaderboard.com/patent/4643257"}]}

Home › Method of recovering hydrocarbons from an underground formation

Method of recovering hydrocarbons from an underground formation

US Patent 4643257 · Granted Feb 17, 1987

Assignee

Shell Oil Compny

Inventors

David L. Roberts (16 patents)
Johan F. G. van Velzen (1 patents)

View full patent text on Google Patents →