CPC E21B 49/005 (2013.01) [E21B 49/02 (2013.01); G01N 33/24 (2013.01)] | 16 Claims |
1. A method for reservoir characterization by identification of lithostratigraphic layers within a subterranean formation based on rock geochemistry of the subterranean formation, the method comprising:
collecting rock samples related to lithostratigraphy of target wells in the subterranean formation;
measuring geochemical/mineralogical parameters of the rock samples with laboratory equipment;
measuring geochemical/mineralogical parameters of the subsurface formation using wellbore geochemical logging tools in the target wells;
measuring formation acoustic velocities for the target wells;
generating characteristic rock sample and log signature patterns for different lithostratigraphic layers based on the measured geochemical/mineralogical parameters and acoustic velocities associated with the different lithostratigraphic layers identified in the target wells;
combining the characteristic log signatures for the different lithostratigraphic layers into a lithographic interpretation using neutron capture spectroscopy (LINS) model; and
identifying the lithostratigraphic layers within the subterranean formation by applying the LINS model to well logs of non-target wells.
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