Title: Integrated Solution of LWD Resistivity Image Logging in Carbonate Reservoir in Beibu Gulf,China
Abstract: Weizhou6-1 oilfield is carboniferous buried-hill carbonate reservoir,which is located in the Beibu Gulf of the South China Sea.In 2006,2 horizontal development wells were drilled in this oilfield to enhance the oil production.They are logged and interpreted with adnVISION(ADN) and geoVISION(GVR) logging while drilling tools.Based on the structural analysis,the NE-SW near borehole structure could be confirmed.Combining the fracture strike statistics and local structure,the fracture development principle is analyzed.In addition,the fracture porosity is calculated using the dual laterolog resistivity algorithm.Secondary porosity is computed from the GVR images by adapting a method originally developed for using with wireline images.A Vug Multiple Effect Factor(Vm) is introduced to generate a porosity map around the borehole using the azimuthal resistivity data obtained from GVR.Using this porosity map,Porosity Spectrum Analysis is used to provide a continuous output of the primary and secondary porosity components for the whole logging interval.With the combination of GVR resistivity images and density neutron data,a fully integrated solution is performed to better define the lithology,geological structure,petrophysical properties and geomechanic analysis in this oilfield.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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