Automated borehole geology and petrophysics interpretation using image logs
First Claim
1. A method of characterizing a borehole traversing an earth formation, comprising:
- a) obtaining an array of data from a formation characterization tool, wherein said data describes a section of said borehole;
b) computing at least one spatial characteristic describing the relative position of pairs of data;
c) assigning said pairs of data to bins based on said spatial characteristic, wherein the size of said bins are selected based on said tool;
d) transforming said data to petrophysical properties of said borehole;
e) calculating the variance of each bin;
f) developing a model of said variances;
g) determining at least one geostatistical parameter using said model; and
h) upscaling said geostatistical parameters to characterize a region of said earth formation.
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Accused Products
Abstract
A method of characterizing a borehole traversing an earth formation including (a) obtaining an array of data from a formation characterization tool, wherein the data describes a section of the borehole; (b) computing at least one spatial characteristic describing the relative position of pairs of data; (c) assigning said pairs of data to bins based on the spatial characteristic, wherein the size of the bins are selected based on the tool; (d) transforming the data to petrophysical properties of the borehole; (e) calculating the variance of each bin; (f) developing a model of the variances; (g) determining at least one geostatistical parameter using the model; and (h) upscaling the geostatistical parameters to characterize a region of said earth formation. The method may further include generating a heterogeneity index log using the geostatistical model parameters. The method may be implemented using a computer program product for processing and interpreting borehole data.
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Citations
20 Claims
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1. A method of characterizing a borehole traversing an earth formation, comprising:
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a) obtaining an array of data from a formation characterization tool, wherein said data describes a section of said borehole; b) computing at least one spatial characteristic describing the relative position of pairs of data; c) assigning said pairs of data to bins based on said spatial characteristic, wherein the size of said bins are selected based on said tool; d) transforming said data to petrophysical properties of said borehole; e) calculating the variance of each bin; f) developing a model of said variances; g) determining at least one geostatistical parameter using said model; and h) upscaling said geostatistical parameters to characterize a region of said earth formation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computer program product for processing and interpreting borehole data, comprising:
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a) a computer useable medium having computer readable program code embodied in said medium for processing borehole data, said computer program product having; b) computer readable program code means for computing at least one spatial characteristic describing the relative position of pairs of data, wherein said data describes a borehole; c) computer readable program code means for assigning said pairs of data to bins based on said spatial characteristics, wherein the size of said bins are selected based on the tool used to collect the data; d) computer readable program code means for transforming said data to petrophysical properties of said borehole; e) computer readable program code means for determining the variance of each bin; f) computer readable program code means for developing a model of said variances; g) computer readable program code means for determining at least one geostatistical parameter using said model; and h) computer readable program code means for upscaling said geostatistical parameters to characterize a region of said earth formation. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification