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:
Dec. 31, 2002
Filed:
Mar. 02, 2001
2-d inversion of multi-component induction logging data to resolve anisotropic resistivity structure
Zhiyi Zhang, Houston, TX (US);
Alberto Mezzatesta, Houston, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
High Definition Induction Logging (HDIL) tools provide reliable information about the vertical and radial variations of resistivity structure in isotropic media. Focusing techniques provide quantitative information about resistivity variation and qualitative information about invasion at the well site. Coaxial alignment of transmitter-receiver arrays with the borehole prevents obtaining information about anisotropy in vertical wells, thereby greatly limiting the application of array induction tools in the characterization of reservoirs with finely laminated sand/shale sequences. A multi-component induction tool, 3DEX™, enables the detection of anisotropy in laminated reservoirs. Multi-component data are invert to give an estimate of vertical and horizontal resistivity in a vertical borehole. 3DEX™ may encounter difficulties in looking through an invaded zone and detecting the anisotropy in the formations. Joint inversion of HDIL and 3DEX™ data enables identification of parameters of the invaded zone as well as of the anisotropic formations.