Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate
2005-08-02
2005-08-02
Nghiem, Michael (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
C324S339000
Reexamination Certificate
active
06925384
ABSTRACT:
A method for determining formation resistivity anisotropy in a wellbore environment. The method of the present invention effectively extends the dynamic range of the existing well logging service of the multi-component induction tool, allowing the use of this service in wells drilled with conductive WBM systems. A sequential inversion processing of galvanic array lateral log HDLL/MLL data or DLL/MLL and also multi-component induction log (3DEXSM) data is used. The formation resistivity structure of the near wellbore environment is determined using the galvanic measurements of the array lateral log tool. The formation resistivity anisotropy of the undisturbed zone is determined using the result of the inversion of the galvanic array data and inversion of measurements of the multi-component induction tool
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Frenkel Michael A.
Geldmacher Ingo M.
Baker Hughes Incorporated
Le Toan M.
Madan Mossman & Sriram P.C.
Nghiem Michael
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