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:
Jan. 22, 2002
Filed:
Feb. 15, 2000
Applicant:
Inventor:
Roger Philip Ashworth, Leics, GB;
Assignee:
Transco PLC, London, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M 3/04 ; G01M 3/08 ; G01M 3/28 ; F16K 2/100 ; G01F 1/500 ;
U.S. Cl.
CPC ...
G01M 3/04 ; G01M 3/08 ; G01M 3/28 ; F16K 2/100 ; G01F 1/500 ;
Abstract
A device and a method for pipeline leakage detection. A pipeline leak detector travels through the bore of a pipeline, applies a test pressure to a fluid contained within the pipeline, and measures the resultant rate of change of pressure in the pipeline by using back extrapolation of the test data to determine an initial pressure drop rate. The degree of leakage at a given position in the pipeline is then determined from the rate of change of pressure in the pipeline.