Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Early gas detection system for a drill stem test

Early gas detection system for a drill stem test

US Patent 4392377 · Granted Jul 12, 1983

Estimated economic value: $4,536,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Drilling fluid diverting sub2016
Apparatus and method for dispensing chemicals into a well2015
Cement shoe and method of cementing well with open hole below the shoe2015
Method and apparatus for completing a horizontal well2009
Locking orientation sub and alignment housing for drill pipe conveyed logging sy1989
Drill pipe conveyed logging system1989
Side entry sub well logging apparatus and method1988
Blowout preventer for a side entry sub1987
Side entry sub well logging apparatus and method1987
Wireline winch mounting system1984
Apparatus for retrieving drill collars1981