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:
Jun. 11, 2002
Filed:
Nov. 09, 2000
Applicant:
Inventors:
Steven C. Owens, The Woodlands, TX (US);
David S. Kulakofsky, Katy, TX (US);
Assignee:
Halliburton Energy Services, Inc., Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 3/316 ; E21B 4/706 ;
U.S. Cl.
CPC ...
E21B 3/316 ; E21B 4/706 ;
Abstract
A method is provided which, in an embodiment described herein, permits a location and/or displacement of a cementing plug to be determined during a cementing operation. In this embodiment, one or more pressure pulses are transmitted through displacement fluid being used to pump the plug through the casing string. The pressure pulses are reflected off of the plug and received by a pressure sensor. Information regarding the timing of the reflected pressure pulses may be used to determine the location and/or displacement of the plug.