-20DETAILED ACTION
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The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA .
Double Patenting
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Claims 1-20 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-20 of U.S. Patent No. 11,788,978. Although the claims at issue are not identical, they are not patentably distinct from each other.
Current Application U.S. Patent No. 11,788,978
1. A method, comprising: obtaining, by a computer processor, first nuclear magnetic resonance (NMR) data for a saturated core sample regarding a geological region of interest;
obtaining, by the computer processor, second NMR data for a desaturated core sample regarding the geological region of interest; and
determining, by the computer processor, a geological model for the geological region of interest using the first NMR data based on the saturated core sample and the second NMR data based on the desaturated core sample.
2. The method of claim 1, further comprising: determining, using the first NMR data, spatial porosity data based on the saturated core sample, wherein the spatial porosity data describes a plurality of porosity values as a function of a sampling position of the saturated core sample, and wherein the spatial porosity data is used to determine the geological model.
3. The method of claim 2, wherein the sampling position of the saturated core sample comprises a predetermined sampling direction and a plurality of sampling locations for the saturated core sample,
wherein the plurality of sampling locations correspond to a plurality of core slices of the saturated core sample arranged according to the predetermined sampling direction, and wherein the first NMR data and the second NMR data correspond to a plurality of magnetic gradients that are determined for the plurality of core slices.
4. The method of claim 1, further comprising: determining, using the second NMR data, spatial permeability data based on the desaturated core sample, wherein the spatial permeability data describes a plurality of permeability values as a function of a sampling position of the desaturated core sample; and wherein the spatial permeability data is used to determine the geological model.
5. The method of claim 1, wherein the desaturated core sample is the saturated core sample after a desaturation operation, and wherein the desaturation operation is performed using a porous plate.
6. The method of claim 1, wherein the first NMR data comprises a distribution of T2 relaxation times at a first plurality of sampling locations of the saturated core sample, and wherein the second NMR data comprises a distribution of T2 cutoff times at a second plurality of sampling locations of the desaturated core sample.
7. The method of claim 1, wherein the first NMR data and the second NMR data are acquired using a plurality of laboratory analyses using an NMR spectroscopy tool.
8. The method of claim 1, further comprising: determining a porosity-permeability cross-plot using spatial porosity data based on the first NMR data and spatial permeability data based on the second NMR data; and determining a predetermined rock type for a portion of the geological region of interest using a fitting process, wherein the geological model is determined using the predetermined rock type.
9. The method of claim 8, wherein the predetermined rock type is selected from a group consisting of: a linear fit; an exponential fit; a power fit; an uncorrelated porosity-permeability fit; a polynomial fit; and a logarithmic fit.
10. The method of claim 8, wherein the fitting process is a least squares regression technique.
11. The method of claim 1, further comprising: determining, by the computer processor, a drilling operation for a drilling system based on the geological model, and wherein the drilling operation comprises a well path based on a plurality of respective rock types for a plurality of geological regions, and wherein the well path is determined using the geological model.
12. The method of claim 1, further comprising: determining, by the computer processor, a production operation for a well system based on the geological model, wherein the production operation comprises a production rate for the well system based on one or more reservoir properties of the geological region of interest.
13. A system, comprising: a nuclear magnetic resonance (NMR) spectroscopy tool; and a reservoir simulator comprising a computer processor, wherein the reservoir simulator is coupled to the NMR spectroscopy tool, the reservoir simulator is configured to perform a method comprising:
obtaining, using the NMR spectroscopy tool, first NMR data for a saturated core sample regarding a geological region of interest;
obtaining, using the NMR spectroscopy tool, second NMR data for a desaturated core sample regarding the geological region of interest; and
determining a geological model for the geological region of interest using the first NMR data based on the saturated core sample and the second NMR data based on the desaturated core sample.
14. The system of claim 13, wherein the method further comprises: determining, using the first NMR data, spatial porosity data based on the saturated core sample, wherein the spatial porosity data describes a plurality of porosity values as a function of a sampling position of the saturated core sample, and wherein the spatial porosity data is used to determine the geological model.
15. The system of claim 13, wherein the method further comprises: determining, using the second NMR data, spatial permeability data based on the desaturated core sample, wherein the spatial permeability data describes a plurality of permeability values as a function of a sampling position of the desaturated core sample; and wherein the spatial permeability data is used to determine the geological model.
16. The system of claim 13, wherein the desaturated core sample is the saturated core sample after a desaturation operation, and wherein the desaturation operation is performed using a porous plate.
17. The system of claim 13, wherein the first NMR data comprises a distribution of T2 relaxation times at a first plurality of sampling locations of the saturated core sample, and wherein the second NMR data comprises a distribution of T2 cutoff times at a second plurality of sampling locations of the desaturated core sample.
18. The system of claim 13, further comprising: a drilling system configured to determine a drilling operation based on the geological model, and wherein the drilling operation comprises a well path based on a plurality of respective rock types for a plurality of geological regions, and wherein the well path is determined using the geological model.
19. The system of claim 13, further comprising: a well system configured to determine a production operation based on the geological model, wherein the production operation comprises a production rate for the well system based on one or more reservoir properties of the geological region of interest.
20. A non-transitory computer readable medium storing instructions executable by a computer processor, the instructions being configured to perform, when executed by the computer processor, a method comprising:
obtaining first nuclear magnetic resonance (NMR) data for a saturated core sample regarding a geological region of interest;
obtaining second NMR data for a desaturated core sample regarding the geological region of interest; and
determining a geological model for the geological region of interest using the first NMR data based on the saturated core sample and the second NMR data based on the desaturated core sample.
1. A method, comprising: obtaining, by a computer processor, first nuclear magnetic resonance (NMR) data for a saturated core sample regarding a geological region of interest;
determining, by the computer processor and using the first NMR data, spatial porosity data based on the saturated core sample, wherein the spatial porosity data describes a plurality of porosity values as a function of a sampling position of the saturated core sample;
obtaining, by the computer processor, second NMR data for a desaturated core sample regarding the geological region of interest; determining, by the computer processor and using the second NMR data, spatial permeability data based on the desaturated core sample, wherein the spatial permeability data describes a plurality of permeability values as a function of the sampling position of the desaturated core sample; and
determining, by the computer processor, a geological model for the geological region of interest using the spatial porosity data, the spatial permeability data, and a fitting process.
(See Claim 1)
2. The method of claim 1, wherein the sampling position of the saturated core sample comprises a predetermined sampling direction and a plurality of sampling locations for the saturated core sample, and
wherein the plurality of sampling locations correspond to a plurality of core slices of the saturated core sample arranged according to the predetermined sampling direction, and wherein the first NMR data and the second NMR data correspond to a plurality of magnetic gradients that are determined for the plurality of core slices.
(See Claim 1)
3. The method of claim 1, wherein the desaturated core sample is the saturated core sample after a desaturation operation, and wherein the desaturation operation is performed using a porous plate.
4. The method of claim 1, wherein the first NMR data comprises a distribution of T2 relaxation times at a first plurality of sampling locations of the saturated core sample, and wherein the second NMR data comprises a distribution of T2 cutoff times at a second plurality of sampling locations of the desaturated core sample.
5. The method of claim 1, wherein the first NMR data and the second NMR data are acquired using a plurality of laboratory analyses using an NMR spectroscopy tool.
6. The method of claim 1, further comprising: determining, by the computer processor, a porosity-permeability cross-plot using the spatial porosity data and the spatial permeability data; and determining, by the computer processor, a predetermined rock type for a portion of the geological region of interest using the fitting process.
7. The method of claim 6, wherein the predetermined rock type is selected from a group consisting of: a linear fit; an exponential fit; a power fit; an uncorrelated porosity-permeability fit; a polynomial fit; and a logarithmic fit.
8. The method of claim 1, wherein the fitting process is a least squares regression technique.
9. The method of claim 1, further comprising: determining, by the computer processor, a drilling operation for a drilling system based on the geological model, and wherein the drilling operation comprises a well path based on a plurality of respective rock types for a plurality of geological regions, and wherein the well path is determined using the geological model.
10. The method of claim 1, further comprising: determining, by the computer processor, a production operation for a well system based on the geological model, wherein the production operation comprises a production rate for the well system based on one or more reservoir properties of the geological region of interest.
11. A system, comprising: a nuclear magnetic resonance (NMR) spectroscopy tool; and a reservoir simulator comprising a computer processor, wherein the reservoir simulator is coupled to the NMR spectroscopy tool, the reservoir simulator is configured to perform a method comprising:
obtaining, using the NMR spectroscopy tool, first nuclear magnetic resonance (NMR) data for a saturated core sample regarding a geological region of interest; determining, using the first NMR data, spatial porosity data based on the saturated core sample, wherein the spatial porosity data describes a plurality of porosity values as a function of a sampling position of the saturated core sample;
obtaining, using the NMR spectroscopy tool, second NMR data for a desaturated core sample regarding the geological region of interest; determining, using the second NMR data, spatial permeability data based on the desaturated core sample, wherein the spatial permeability data describes a plurality of permeability values as a function of the sampling position of the desaturated core sample; and
determining a geological model for the geological region of interest using the spatial porosity data, the spatial permeability data, and a fitting process.
(See Claim 11)
(See Claim 11)
13. The system of claim 11, wherein the desaturated core sample is the saturated core sample after a desaturation operation, and wherein the desaturation operation is performed using a porous plate.
14. The system of claim 11, wherein the first NMR data comprises a distribution of T2 relaxation times at a first plurality of sampling locations of the saturated core sample, and wherein the second NMR data comprises a distribution of T2 cutoff times at a second plurality of sampling locations of the desaturated core sample.
16. The system of claim 11, further comprising: a drilling system configured to determine a drilling operation based on the geological model, and wherein the drilling operation comprises a well path based on a plurality of respective rock types for a plurality of geological regions, and wherein the well path is determined using the geological model.
17. The system of claim 11, further comprising: a well system configured to determine a production operation based on the geological model, wherein the production operation comprises a production rate for the well system based on one or more reservoir properties of the geological region of interest.
18. A non-transitory computer readable medium storing instructions executable by a computer processor, the instructions being configured to perform, when executed by the computer processor, a method comprising:
obtaining first nuclear magnetic resonance (NMR) data for a saturated core sample regarding a geological region of interest; determining, using the first NMR data, spatial porosity data based on the saturated core sample, wherein the spatial porosity data describes a plurality of porosity values as a function of a sampling position of the saturated core sample;
obtaining second NMR data for a desaturated core sample regarding the geological region of interest; determining, using the second NMR data, spatial permeability data based on the desaturated core sample, wherein the spatial permeability data describes a plurality of permeability values as a function of the sampling position of the desaturated core sample; and determining a geological model for the geological region of interest using the spatial porosity data, the spatial permeability data, and a fitting process.
Conclusion
The prior art made of record and not relied upon is considered pertinent to applicant's disclosure:
Washburn (US 10,436,865), Al-Harbi, et al. (US 2019/0033238), Sun, et al. (US 9,244,188) and Gladkikh, et al. (US 2008/0221800) teach a system and/or method to test core samples with downhole nuclear magnetic resonance (NMR) data.
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/RODNEY E FULLER/Primary Examiner, Art Unit 2852
November 18, 2025