Enhanced inversion imaging
Data filtering and processing techniques for generating improved wellbore resistivity maps are contemplated. In some aspects, a process of the disclosed technology includes steps for receiving a plurality of measurement sets, wherein each measurement set includes electromagnetic field data associated with a geologic formation, performing an inversion on each of the plurality of measurement sets to generate a corresponding plurality of formation profiles, and applying a filter to each of the formation profiles to generate a plurality of profile clusters. In some aspects, the process can further include steps for selecting a representative cluster from among the profile clusters for use in generating a wellbore resistivity map. Systems and machine-readable media are also provided.
1. A method for generating a wellbore resistivity map, comprising:
receiving a plurality of measurement sets, wherein each measurement set comprises electromagnetic field data associated with a geologic formation;
performing an inversion on each of the plurality of measurement sets to generate a corresponding plurality of formation profiles;
applying a first filter to each of the formation profiles to generate a first profile cluster;
applying a second filter to each of the formation profiles to generate a second profile cluster;
selecting a representative cluster from among the first profile cluster and the second profile cluster; and
generating a wellbore resistivity map to either or both facilitate geosteering and enhance production in association with the geologic formation, wherein the wellbore resistivity map is generated from the representative cluster that is selected from the first profile cluster and the second profile cluster.
2. The method of claim 1 , wherein selecting the representative cluster further comprises:
comparing the first profile cluster to the plurality of measurement sets to determine a first profile cluster error;
comparing the second profile cluster to the plurality of measurement sets to determine a second profile cluster error; and
selecting the representative cluster based on the first profile cluster error and the second profile cluster error.
3. The method of claim 1 , wherein the electromagnetic field data for each measurement set is associated with different depths in the geologic formation.
4. The method of claim 1 , wherein the first filter is selected based on one or more properties of the geologic formation.
5. The method of claim 1 , wherein applying the first filter to each of the formation profiles further comprises adjusting the first filter based on a collection depth corresponding with each of the formation profiles.
6. The method of claim 1 , wherein the first filter comprises one or more filter parameters that are selected based on seismic data or offset logs.
7. The method of claim 1 , wherein applying the first filter to each of the formation profiles to generate the first profile cluster further comprises:
converting each of the formation profiles into a frequency-domain to produce a corresponding plurality of frequency profiles; and
applying a frequency filter to each of the frequency profiles.
8. A system for generating a wellbore resistivity map, the system comprising:
one or more processors; and
a non-transitory memory coupled to the one or more processors, wherein the memory comprises instruction configured to cause the processors to perform operations for:
receiving a plurality of measurement sets, wherein each measurement set comprises electromagnetic field data associated with a geologic formation;
performing an inversion on each of the plurality of measurement sets to generate a corresponding plurality of formation profiles;
applying a first filter to each of the formation profiles to generate a first profile cluster;
applying a second filter to each of the formation profiles to generate a second profile cluster;
selecting a representative cluster from among the first profile cluster and the second profile cluster; and
generating a wellbore resistivity map to either or both facilitate geosteering and enhance production in association with the geologic formation, wherein the wellbore resistivity map is generated from the representative cluster that is selected from the first profile cluster and the second profile cluster.
9. The system of claim 8 , wherein selecting the representative cluster further comprises:
comparing the first profile cluster to the plurality of measurement sets to determine a first profile cluster error;
comparing the second profile cluster to the plurality of measurement sets to determine a second profile cluster error; and
selecting the representative cluster based on the first profile cluster error and the second profile cluster error.
10. The system of claim 8 , wherein the electromagnetic field data for each measurement set is associated with different depths in the geologic formation.
11. The system of claim 8 , wherein the first filter is selected based on one or more properties of the geologic formation.
12. The system of claim 8 , wherein applying the first filter to each of the formation profiles further comprises adjusting the first filter based on a collection depth corresponding with each of the formation profiles.
13. The system of claim 8 , wherein the first filter comprises one or more filter parameters that are selected based on seismic data or offset logs.
14. The system of claim 8 , wherein applying the first filter to each of the formation profiles to generate the first profile cluster further comprises:
converting each of the formation profiles into a frequency-domain to produce a corresponding plurality of frequency profiles; and
applying a frequency filter to each of the frequency profiles.
15. A tangible, non-transitory, computer-readable media having instructions encoded thereon, the instructions, when executed by a processor, are operable to perform operations for:
receiving a plurality of measurement sets, wherein each measurement set comprises electromagnetic field data associated with a geologic formation;
performing an inversion on each of the plurality of measurement sets to generate a corresponding plurality of formation profiles;
applying a first filter to each of the formation profiles to generate a first profile cluster;
applying a second filter to each of the formation profiles to generate a second profile cluster;
selecting a representative cluster from among the first profile cluster and the second profile cluster; and
generating a wellbore resistivity map to either or both facilitate geosteering and enhance production in association with the geologic formation, wherein the wellbore resistivity map is generated from the representative cluster that is selected from the first profile cluster and the second profile cluster.
16. The tangible, non-transitory, computer-readable media of claim 15 , wherein selecting the representative cluster further comprises:
comparing the first profile cluster to the plurality of measurement sets to determine a first profile cluster error;
comparing the second profile cluster to the plurality of measurement sets to determine a second profile cluster error; and
selecting the representative cluster based on the first profile cluster error and the second profile cluster error.
17. The tangible, non-transitory, computer-readable media of claim 15 , wherein the electromagnetic field data for each measurement set is associated with different depths in the geologic formation.
18. The tangible, non-transitory, computer-readable media of claim 15 , wherein the first filter is selected based on one or more properties of the geologic formation.
19. The tangible, non-transitory, computer-readable media of claim 15 , wherein applying the first filter to each of the formation profiles further comprises adjusting the first filter based on a collection depth corresponding with each of the formation profiles.
20. The tangible, non-transitory, computer-readable media of claim 15 , wherein the first filter comprises one or more filter parameters that are selected based on seismic data or offset logs.