Method for processing borehole logs to enhance the continuity of physical property measurements of a subsurface region
AssigneeChevron U.S.A. Inc.
InventorsBoqin Sun, Keh-Jim Dunn
Life of this patent
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Abstract
A computer-implemented method and system for processing subsurface logs to enhance the continuity of physical property measurements. The method includes obtaining a set of measurement signals along a spatial or time domain from at least one sensor tool moving through a borehole which has traversed through a subsurface region. The method additionally includes performing a global inversion of the set of measurement signals along the spatial or time domain to determine a set of physical properties of the subsurface region having a smooth variation along the spatial or time domain, wherein the set of physical properties can be utilized to determine characteristics of the subsurface region.
Claims10
A computer-implemented method of processing sequential measurement signals of a subsurface region to enhance the continuity of physical property measurements, wherein the method comprises:
- obtaining a set of sequential measurement signals along at least one of a spatial or time domain from at least one sensor tool, wherein the sensor tool has obtained the set of sequential measurement signals from the subsurface region;
- and
- performing a global inversion of the set of sequential measurement signals with a smoothness constraint in at least one of the spatial or time domain to determine a set of physical properties of the subsurface region, wherein the set of physical properties has a smooth variation in at least one of the spatial or time domain which can be utilized to determine characteristics of the subsurface region.
A system configured to process subsurface logs to enhance the continuity of physical property measurements, the system comprising:
- one or more processors, the one or more processors providing a correlation between depositionally equivalent subsurface events between separate litho facies by:
- (a) obtaining a set of sequential measurement signals along at least one of a spatial or time domain from at least one sensor tool;
- the set of sequential measurement signals being obtained while the sensor tool moves through a borehole which has traversed through a subsurface region;
- and
- (b) performing a global inversion of the set of sequential measurement signals along at least one of the spatial or time domain to determine a set of physical properties of the subsurface region having a smooth variation along at least one of the spatial or time domain, wherein the set of physical properties can be utilized to determine characteristics of the subsurface region.
Dependencies are inferred from the claim text.