Patent ID: 9341557
Filing Date: 2016-05-17
CPC Classification: E21B,G01N

Claim Text:
1. A downhole measurement tool, comprising: a body configured for insertion into and retraction from a horizontal well under downhole production logging conditions, said horizontal well being divided into plurality of well segments, wherein said body comprises: means for determining an approximate upper boundary and an approximate lower boundary of the horizontal well; means for calculating relative permeability of oil and relative permeability of water for the horizontal well; means for calculating a horizontal permeability for an i-th well segment as where q 0 (i) is a measured oil production rate for the i-th well segment, q w (i) is a measured water production rate for the i-th well segment, k r0 represents the measured relative permeability of oil, k rw represents the measured relative permeability of water, μ 0 represents a measured oil viscosity, μ w represents a measured water viscosity, B 0 represents a measured oil formation volume factor, and B w represents a measured water formation volume factor; and means for displaying the calculated horizontal permeability for each said well segment.