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. 24, 2008
Filed:
Dec. 30, 2005
Georgios L. Varsamis, Houston, TX (US);
Joakim Oscar Blanch, Houston, TX (US);
Arthur C. H. Cheng, Sugar Land, TX (US);
Calvin Wisner Kessler, Houston, TX (US);
Denis Schmitt, Katy, TX (US);
Batakrishna Mandal, Missouri City, TX (US);
Georgios L. Varsamis, Houston, TX (US);
Joakim Oscar Blanch, Houston, TX (US);
Arthur C. H. Cheng, Sugar Land, TX (US);
Calvin Wisner Kessler, Houston, TX (US);
Denis Schmitt, Katy, TX (US);
Batakrishna Mandal, Missouri City, TX (US);
Halliburton Energy Services Inc., Houston, TX (US);
Abstract
Methods and apparatus are provided for reducing and/or substantially eliminating sensitivity mismatch of acoustic receivers used with acoustic sources to determine acoustic properties of geologic formations as a logging tool traverses the formations. Methods are directed to detecting waveform arrival times at receivers, determining places in a well where arrival times of waves are substantially the same at a plurality of receivers, and estimating effective receiver sensitivities and equalization factors using Stoneley wave amplitudes and windowed deconvolution of Stoneley waves. Methods are further directed to correcting wave amplitudes using estimated effective receiver sensitivities and equalization factors for receivers.