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. 04, 2003
Filed:
Nov. 28, 2000
Applicant:
Inventor:
Wilhelmus Hubertus Paulus Maria Heijnen, Nienhagen, DE;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 4/710 ; E21B 4/714 ;
U.S. Cl.
CPC ...
E21B 4/710 ; E21B 4/714 ;
Abstract
A method for detecting a leak in a well tubular of a well for production of hydrocarbon fluid from a formation is disclosed. The method includes steps of: passing a sonic tool provided with a transducer package capable of sending and receiving a sonic signal through the well tubular; prior to starting production to obtain an initial registration of a reflected signal for a well that does not have a leak; obtaining at least one subsequent registrations of reflected signals; comparing the initial registration to a subsequent registration and determining from the differences between the two if a leak has developed in the well tuburtar.