The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 1989
Filed:
Feb. 01, 1988
Applicant:
Inventors:
Richmond Bennett, Columbus, OH (US);
Paul D Schettler, Huntingdon, PA (US);
Todd D Gustafson, Huntingdon, PA (US);
Assignee:
Columbia Gas System Service Corporation, Columbus, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
73155 ; 436 27 ; 436 28 ; 7386105 ;
Abstract
A cylinder is mounted to descend a borehole for purposes of measuring the mass flow rate of gas flowing upward in the borehole. Within the cylinder is a source of tracer gas which is ejected at a constant mass flow rate [05] from near the lower end of the cylinder. A tracer gas concentration measuring means near the top of the cylinder will measure the degree of concentration of the tracer gas and thereby provide a measurement of the mass flow rate of other gases flowing upwardly around the cylinder.