Patents by Inventor Taher M. Sodagar
Taher M. Sodagar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12153180Abstract: Disclosed are methods, systems, and computer-readable medium to perform operations including: spectrally decomposing seismic data associated with a target subsurface area into a plurality of iso-frequency volumes; selecting a low-frequency volume and a high-frequency volume from the plurality of iso-frequency volumes; dividing the low-frequency volume by the high-frequency volume to generate a frequency ratio volume for the target subsurface area; establishing a time-depth relationship in the target subsurface area; extracting, based on the time-depth relationship and the frequency ratio volume, an iso-frequency ratio log in the target subsurface area; and using the iso-frequency ratio log to identify a subsurface gas reservoir in the target subsurface area.Type: GrantFiled: March 22, 2022Date of Patent: November 26, 2024Assignee: Saudi Arabian Oil CompanyInventors: Taher M. Sodagar, Amin Z. Alali
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Publication number: 20240309744Abstract: Examples of methods and systems are disclosed. The methods include, obtaining a seismic dataset regarding a subsurface region of interest, wherein the seismic dataset comprises a plurality of time-domain seismic traces. The methods also include determining a plurality of single-frequency volumes from the plurality of time-domain seismic traces. The methods further include determining a frequency ratio volume based, at least in part, on the plurality of single-frequency volumes. The methods still further include extracting a three-dimensional (3D) geological body based, at least in part, on the frequency ratio volume. The methods further include determining a drilling target in the subsurface region based on the 3D geological body.Type: ApplicationFiled: March 13, 2023Publication date: September 19, 2024Applicant: SAUDI ARABIAN OIL COMPANYInventors: Taher M. Sodagar, Amin Z. Alali, Ahmed M. Otaibi
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Patent number: 11977198Abstract: A method that includes transforming a relative amplitude preserved 3D seismic volume acquired in the time-domain into a plurality of isofrequency volumes, extracting from the plurality of isofrequency volumes a first isofrequency spectral amplitude volume and a second isofrequency spectral amplitude volume. The method further includes determining an attribute volume from the two isofrequency spectral amplitude volumes, and determining a presence of gas in a subterranean region of interest based on the attribute volume.Type: GrantFiled: October 6, 2020Date of Patent: May 7, 2024Assignee: SAUDI ARABIAN OIL COMPANYInventors: Hassan A. AlDubaisi, Taher M. Sodagar
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Patent number: 11821307Abstract: Methods and systems for determining a spectral ratio log using a time domain seismic image and a seismic velocity model are disclosed. The method includes determining a first mono-spectral seismic image and a second mono-spectral seismic image from the time domain seismic image. The method further includes determining a time domain spectral ratio image from the first mono-spectral seismic image and the second mono-spectral seismic image and transforming the time domain spectral ratio image into a depth domain spectral ratio image using the seismic velocity model. The method still further includes defining a wellbore path through the depth domain spectral ratio image and determining a spectral ratio log along the wellbore path from the depth domain spectral ratio.Type: GrantFiled: October 6, 2021Date of Patent: November 21, 2023Assignee: SAUDI ARABIAN OIL COMPANYInventors: Amin Z. Alali, Taher M. Sodagar
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Publication number: 20230324576Abstract: Disclosed are methods, systems, and computer-readable medium to perform operations including: spectrally decomposing seismic data associated with a target subsurface area into a plurality of iso-frequency volumes; selecting a low-frequency volume and a high-frequency volume from the plurality of iso-frequency volumes; dividing the low-frequency volume by the high-frequency volume to generate a frequency ratio volume for the target subsurface area; establishing a time-depth relationship in the target subsurface area; extracting, based on the time-depth relationship and the frequency ratio volume, an iso-frequency ratio log in the target subsurface area; and using the iso-frequency ratio log to identify a subsurface gas reservoir in the target subsurface area.Type: ApplicationFiled: March 22, 2022Publication date: October 12, 2023Inventors: Taher M. Sodagar, Amin Z. Alali
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Publication number: 20230103762Abstract: Methods and systems for determining a spectral ratio log using a time domain seismic image and a seismic velocity model are disclosed. The method includes determining a first mono-spectral seismic image and a second mono-spectral seismic image from the time domain seismic image. The method further includes determining a time domain spectral ratio image from the first mono-spectral seismic image and the second mono-spectral seismic image and transforming the time domain spectral ratio image into a depth domain spectral ratio image using the seismic velocity model. The method still further includes defining a wellbore path through the depth domain spectral ratio image and determining a spectral ratio log along the wellbore path from the depth domain spectral ratio.Type: ApplicationFiled: October 6, 2021Publication date: April 6, 2023Applicant: SAUDI ARABIAN OIL COMPANYInventors: Amin Z. Alali, Taher M. Sodagar
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Patent number: 11592589Abstract: A method of obtaining a relative amplitude preserved seismic volume acquired in a time-domain for a subterranean region of interest and transforming it into a low-frequency monospectral amplitude volume. The method further determines a seismic attenuation volume from the relative amplitude preserved seismic volume acquired in the time-domain. Furthermore, the method generates a low-frequency monospectral amplitude map for a surface of interest by averaging the low-frequency monospectral amplitude volume over a depth-window around the surface of interest, and generates a seismic attenuation map for a surface of interest by averaging the seismic attenuation volume over a depth-window around the surface of interest. The method further determines an attribute map based on the seismic attenuation map and the low-frequency monospectral amplitude map for the surface of interest, and determines a presence of gas in the subterranean region of interest based on the attribute map.Type: GrantFiled: January 14, 2021Date of Patent: February 28, 2023Assignee: SAUDI ARABIAN OIL COMPANYInventors: Taher M. Sodagar, Amin Z. Alali
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Publication number: 20220221607Abstract: A method of obtaining a relative amplitude preserved seismic volume acquired in a time-domain for a subterranean region of interest and transforming it into a low-frequency monospectral amplitude volume. The method further determines a seismic attenuation volume from the relative amplitude preserved seismic volume acquired in the time-domain. Furthermore, the method generates a low-frequency monospectral amplitude map for a surface of interest by averaging the low-frequency monospectral amplitude volume over a depth-window around the surface of interest, and generates a seismic attenuation map for a surface of interest by averaging the seismic attenuation volume over a depth-window around the surface of interest. The method further determines an attribute map based on the seismic attenuation map and the low-frequency monospectral amplitude map for the surface of interest, and determines a presence of gas in the subterranean region of interest based on the attribute map.Type: ApplicationFiled: January 14, 2021Publication date: July 14, 2022Applicant: SAUDI ARABIAN OIL COMPANYInventors: Taher M. Sodagar, Amin Z. Alali
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Patent number: 11333780Abstract: A method of processing a three-dimensional (3D) seismic dataset includes: producing a relative amplitude preserved (RAP) processed seismic volume that includes a reservoir from the 3D seismic dataset; decomposing the RAP processed seismic volume into a first iso-frequency volume; generating a first overburden sediment interval map and a first reservoir interval zone map for the first iso-frequency volume; generating and outputting a first ratio map for the first iso-frequency volume by dividing the first overburden sediment interval map by the first reservoir interval zone map; and characterizing a fluid content of the reservoir based on the first ratio map.Type: GrantFiled: October 9, 2020Date of Patent: May 17, 2022Assignee: SAUDI ARABIAN OIL COMPANYInventors: Taher M. Sodagar, Ahmed M. Alhamad
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Publication number: 20220113439Abstract: A method of processing a three-dimensional (3D) seismic dataset includes: producing a relative amplitude preserved (RAP) processed seismic volume that includes a reservoir from the 3D seismic dataset; decomposing the RAP processed seismic volume into a first iso-frequency volume; generating a first overburden sediment interval map and a first reservoir interval zone map for the first iso-frequency volume; generating and outputting a first ratio map for the first iso-frequency volume by dividing the first overburden sediment interval map by the first reservoir interval zone map; and characterizing a fluid content of the reservoir based on the first ratio map.Type: ApplicationFiled: October 9, 2020Publication date: April 14, 2022Applicant: SAUDI ARABIAN OIL COMPANYInventors: Taher M. Sodagar, Ahmed M. Alhamad
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Publication number: 20220107435Abstract: A method that includes transforming a relative amplitude preserved 3D seismic volume acquired in the time-domain into a plurality of isofrequency volumes, extracting from the plurality of isofrequency volumes a first isofrequency spectral amplitude volume and a second isofrequency spectral amplitude volume. The method further includes determining an attribute volume from the two isofrequency spectral amplitude volumes, and determining a presence of gas in a subterranean region of interest based on the attribute volume.Type: ApplicationFiled: October 6, 2020Publication date: April 7, 2022Applicant: SAUDI ARABIAN OIL COMPANYInventors: Hassan A. AlDubaisi, Taher M. Sodagar