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US 10,295,696 B2Granted
Multi-component induction logging data processing in non-circular boreholes
AssigneeHalliburton Energy Services, Inc.
InventorJunsheng Hou
Life of this patent
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Abstract
The processing of multicomponent induction (“MCI”) data in non-circular, or elliptical, boreholes is achieved through the use of borehole formation models generated using elliptical borehole characteristics.
Claims42
A method for processing multi-component induction (“MCI”) logging measurement signals, the method comprising:
- generating a borehole formation model based upon elliptical borehole characteristics;
- acquiring a MCI measurement signal of a formation using a logging tool extending along a borehole;
- processing the MCI measurement signal using the borehole formation model;
- and
- outputting formation property data corresponding to the processed MCI measurement signal,
- wherein processing the MCI measurement signal comprises performing an inversion of the MCI measurement signal using the borehole formation model, and
- wherein performing the inversion comprises:
- performing a radially one-dimensional (“R1D”) inversion of the MCI measurement signal using the borehole formation model;
- and
- removing borehole effects from the MCI measurement signal using the R1D inverted MCI measurement signal.
7 more elements
A multi-component induction (“MCI”) logging tool, comprising one or more sensors to acquire multi-component induction measurement signals, the sensors being communicably coupled to processing circuitry to implement a method comprising:
- generating a borehole formation model based upon elliptical borehole characteristics;
- acquiring an MCI measurement signal of a formation;
- processing the MCI measurement signal using the borehole formation model;
- and
- outputting formation property data corresponding to the processed MCI measurement signal,
- wherein processing the MCI measurement signal comprises performing an inversion of the MCI measurement signal using the borehole formation model, and
- wherein performing the inversion comprises:
- performing a radially one-dimensional (“R1D”) inversion of the MCI measurement signal using the borehole formation model;
- and
- removing borehole effects from the MCI measurement signal using the R1D inverted MCI measurement signal.
7 more elements
A non-transitory computer-readable medium comprising instructions which, when executed by at least one processor, causes the processor to perform a method comprising:
- generating a borehole formation model based upon elliptical borehole characteristics;
- acquiring a multi-component induction (“MCI”) measurement signal of a formation using a logging tool extending along a borehole;
- processing the MCI measurement signal using the borehole formation model,
- wherein processing the MCI measurement signal comprises performing an inversion of the MCI measurement signal using the borehole formation model,
- wherein performing the inversion comprises:
- performing a radially one-dimensional (“R1D”) inversion of the MCI measurement signal using the circular borehole model;
- and
- removing borehole effects from the MCI measurement signal using the R1D inverted MCI measurement signal;
- and
- outputting formation property data corresponding to the processed MCI measurement signal.
7 more elements
A method for processing multi-component induction (“MCI”) logging measurement signals, the method comprising:
- generating a borehole formation model based upon elliptical borehole characteristics, wherein generating the borehole formation model comprises:
- determining the elliptical borehole characteristics;
- determining circular borehole characteristics that are equivalent to the elliptical borehole characteristics;
- and
- utilizing the equivalent circular borehole characteristics to generate the borehole formation model, thereby rendering the borehole formation model a circular borehole model;
- acquiring a MCI measurement signal of a formation using a logging tool extending along a borehole;
- processing the MCI measurement signal using the borehole formation model, wherein processing the MCI measurement signal comprises:
- performing a radially one-dimensional (“R1D”) inversion of the MCI measurement signal using the circular borehole model;
- performing a R1D inversion of the MCI measurement signal using an elliptical borehole model;
- and
- removing borehole effects from the MCI measurement signal using the R1D inverted measurement signal of the elliptical borehole model;
- and
- outputting formation property data corresponding to the processed MCI measurement signal.
10 more elements
A multi-component induction (“MCI”) logging tool, comprising one or more sensors to acquire multi-component induction measurement signals, the sensors being communicably coupled to processing circuitry to implement a method comprising:
- generating a borehole formation model based upon elliptical borehole characteristics, wherein generating the borehole formation model comprises:
- determining the elliptical borehole characteristics;
- determining circular borehole characteristics that are equivalent to the elliptical borehole characteristics;
- and
- utilizing the equivalent circular borehole characteristics to generate the borehole formation model, thereby rendering the borehole formation model a circular borehole model;
- acquiring an MCI measurement signal of a formation;
- processing the MCI measurement signal using the borehole formation model, wherein the processing comprises:
- performing a radially one-dimensional (“R1D”) inversion of the MCI measurement signal using the circular borehole model;
- performing a R1D inversion of the MCI measurement signal using an elliptical borehole model;
- and
- removing borehole effects from the MCI measurement signal using the R1D inverted measurement signal of the elliptical borehole model;
- and
- outputting formation property data corresponding to the processed MCI measurement signal.
10 more elements
A non-transitory computer-readable medium comprising instructions which, when executed by at least one processor, causes the processor to perform a method comprising:
- generating a borehole formation model based upon elliptical borehole characteristics, wherein generating the borehole formation model comprises:
- determining the elliptical borehole characteristics;
- determining circular borehole characteristics that are equivalent to the elliptical borehole characteristics;
- and
- utilizing the equivalent circular borehole characteristics to generate the borehole formation model, thereby rendering the borehole formation model a circular borehole model;
- acquiring a multi-component induction (“MCI”) measurement signal of a formation using a logging tool extending along a borehole;
- processing the MCI measurement signal using the borehole formation model, wherein processing the MCI measurement signal comprises:
- performing a radially one-dimensional (“R1D”) inversion of the MCI measurement signal using the circular borehole model;
- performing a R1D inversion of the MCI measurement signal using an elliptical borehole model;
- and
- removing borehole effects from the MCI measurement signal using the R1D inverted measurement signal of the elliptical borehole model;
- and
- outputting formation property data corresponding to the processed MCI measurement signal.
10 more elements
Dependencies are inferred from the claim text.