2-d inversion of multi-component induction logging data to resolve anisotropic resistivity structure
CA 2439909 C · Owner: Zhang, Zhiyi · Inventors: Zhang, Zhiyi; Mezzatesta, Alberto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
High Definition Inductio Logging (HDIL) tools (10) can provide reliable information about the vertical and radial variations of resistivity (Rh1 Rv1, Rhi, Rvi) structure in isotropic media (201a 201i). This type of logging tool , utilizes transmitter-receiver arrays (101 103, 105, 107, 109, 111, 113, 115) , coaxial with the borehole (2) and thus cannot provide information about anisotropy in vertical wells. This greatly limits the application of array induction tools in the characterization of reservoirs with finely laminated sand/shale (4A-4E) sequences. A multi-component induction 3DEX tool provides the much needed ability to detect anisotropy for sand-shale laminated reservoirs. …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
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- Filed March 1, 2002 and granted August 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 1, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 2024.
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