20 found
Order:
  1.  12
    Multispectral, Multiazimuth, and Multioffset Coherence Attribute Applications.Satinder Chopra & Kurt J. Marfurt - 2019 - Interpretation 7 (2):SC21-SC32.
    The coherence attribute computation is typically carried out as a poststack application on 3D prestack migrated seismic data volumes. However, since its inception, interpreters have applied coherence to band-pass-filtered data, azimuthally limited stacks, and offset-limited stacks to enhance discontinuities seen at specific frequencies, azimuths, and offsets. The limitation of this approach is the multiplicity of coherence volumes. Of the various coherence algorithms that have evolved over the past 25 years, the energy ratio coherence computation stands apart from the others, being (...)
    No categories
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  2.  12
    Seismic Reservoir Characterization of Utica-Point Pleasant Shale with Efforts at Quantitative Interpretation — A Case Study: Part 1.Satinder Chopra, Ritesh Kumar Sharma, Hossein Nemati & James Keay - 2018 - Interpretation: SEG 6 (2):T313-T324.
    The Utica Shale is one of the major source rocks in Ohio, and it extends across much of the eastern United States. Its organic richness, high content of calcite, and development of extensive organic porosity make it a perfect unconventional play, and it has gained the attention of the oil and gas industry. The primary target zone in the Utica Play includes the Utica Formation, Point Pleasant Formation, and Trenton Formation intervals. We attempt to identify the sweet spots within the (...)
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  3.  13
    Seismic Reservoir Characterization of Utica-Point Pleasant Shale with Efforts at Fracability Evaluation- a Case Study: Part 2.Ritesh Kumar Sharma, Satinder Chopra, James Keay, Hossein Nemati & Larry Lines - forthcoming - Interpretation:1-36.
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  4.  11
    Seismic Reservoir Characterization of Utica-Point Pleasant Shale with Efforts at Quantitative Interpretation — A Case Study: Part 1.Satinder Chopra, Ritesh Kumar Sharma, Hossein Nemati & James Keay - 2018 - Interpretation 6 (2):T313-T324.
    The Utica Shale is one of the major source rocks in Ohio, and it extends across much of the eastern United States. Its organic richness, high content of calcite, and development of extensive organic porosity make it a perfect unconventional play, and it has gained the attention of the oil and gas industry. The primary target zone in the Utica Play includes the Utica Formation, Point Pleasant Formation, and Trenton Formation intervals. We attempt to identify the sweet spots within the (...)
    No categories
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  5.  9
    Seismic Reservoir Characterization of Utica-Point Pleasant Shale with Efforts at Fracability Evaluation — Part 2: A Case Study.Ritesh Kumar Sharma, Satinder Chopra, James Keay, Hossein Nemati & Larry Lines - 2018 - Interpretation: SEG 6 (2):T325-T336.
    The Utica Formation in eastern Ohio possesses all the prerequisites for being a successful unconventional play. Attempts at seismic reservoir characterization of the Utica Formation have been discussed in part 1, in which, after providing the geologic background of the area of study, the preconditioning of prestack seismic data, well-log correlation, and building of robust low-frequency models for prestack simultaneous impedance inversion were explained. All these efforts were aimed at identification of sweet spots in the Utica Formation in terms of (...)
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  6.  22
    Seismic Reservoir Characterization of Duvernay Shale with Quantitative Interpretation and Induced Seismicity Considerations — A Case Study.Satinder Chopra, Ritesh Kumar Sharma, Amit Kumar Ray, Hossein Nemati, Ray Morin, Brian Schulte & David D’Amico - 2017 - Interpretation: SEG 5 (2):T185-T197.
    The Devonian Duvernay Formation in northwest central Alberta, Canada, has become a hot play in the past few years due to its richness in liquid and gaseous hydrocarbon resources. The oil and gas generation in this shale formation made it the source rock for many oil and gas fields in its vicinity. We attempt to showcase the characterization of Duvernay Formation using 3D multicomponent seismic data and integrating it with the available well log and other relevant data. This has been (...)
    No categories
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  7.  4
    Coherence Attribute Applications on Seismic Data in Various Guises — Part 1.Satinder Chopra & Kurt J. Marfurt - 2018 - Interpretation: SEG 6 (3):T521-T529.
    The iconic coherence attribute is very useful for imaging geologic features such as faults, deltas, submarine canyons, karst collapse, mass-transport complexes, and more. In addition to its preconditioning, the interpretation of discrete stratigraphic features on seismic data is also limited by its bandwidth, where in general the data with higher bandwidth yield crisper features than data with lower bandwidth. Some form of spectral balancing applied to the seismic amplitude data can help in achieving such an objective so that coherence run (...)
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  8.  16
    Volumetric Fault Image Enhancement — Some Applications.Satinder Chopra & Kurt J. Marfurt - 2017 - Interpretation: SEG 5 (2):T151-T161.
    The interpretation of faults on 3D seismic data is often aided by the use of geometric attributes such as coherence and curvature. Unfortunately, these same attributes also delineate stratigraphic boundaries and apparent discontinuities due to cross-cutting seismic noise. Effective fault mapping thus requires enhancing piecewise continuous faults and suppressing stratabound edges and unconformities as well as seismic noise. To achieve this objective, we apply two passes of edge-preserving structure-oriented filtering followed by a recently developed fault enhancement algorithm based on a (...)
    No categories
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  9.  12
    Coherence Attribute Applications on Seismic Data in Various Guises — Part 2.Satinder Chopra & Kurt J. Marfurt - 2018 - Interpretation: SEG 6 (3):T613-T623.
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  10.  2
    Coherence Attribute Applications on Seismic Data in Various Guises — Part 2.Satinder Chopra & Kurt J. Marfurt - 2018 - Interpretation 6 (3):T531-T541.
    We have previously discussed some alternative means of modifying the frequency spectrum of the input seismic data to modify the resulting coherence image. The simplest method was to increase the high-frequency content by computing the first and second derivatives of the original seismic amplitudes. We also evaluated more sophisticated techniques, including the application of structure-oriented filtering to different spectral components before spectral balancing, thin-bed reflectivity inversion, bandwidth extension, and the amplitude volume technique. We further examine the value of coherence computed (...)
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  11.  18
    Characterization of Shallow High-Amplitude Seismic Anomalies in the Hoop Fault Complex, Barents Sea.Satinder Chopra, Ritesh Kumar Sharma, Graziella Kirtland Grech & Bent Erlend Kjølhamar - 2017 - Interpretation: SEG 5 (4):T607-T622.
    The shallow migrating hydrocarbon fluids in the western Barents Sea are usually found to be associated with high seismic amplitudes. We have attempted to characterize such shallow high-amplitude anomalies in the Hoop Fault Complex area of the western Barents Sea. The workflow is devised for discrimination of anomalies that are associated with the presence of hydrocarbons from those that are not, and quantifying them further includes the computation of a set of seismic attributes and their analyses. These attributes comprise coherence, (...)
    No categories
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  12.  2
    Seismic Reservoir Characterization of Bone Spring and Wolfcamp Formations in the Delaware Basin — A Case Study: Part 1.Satinder Chopra, Ritesh Kumar Sharma & James Keay - 2020 - Interpretation 8 (4):T927-T940.
    The Delaware and Midland Basins are multistacked plays with production being drawn from different zones. Of the various prospective zones in the Delaware Basin, the Bone Spring and Wolfcamp Formations are the most productive and thus are the most drilled zones. To understand the reservoirs of interest and identify the hydrocarbon sweet spots, a 3D seismic inversion project was undertaken in the northern part of the Delaware Basin in 2018. We have examined the reservoir characterization exercise for this dataset in (...)
    No categories
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  13.  4
    Introduction to Special Section: Machine Learning in Seismic Data Analysis.Haibin Di, Tao Zhao, Vikram Jayaram, Xinming Wu, Lei Huang, Ghassan AlRegib, Jun Cao, Mauricio Araya-Polo, Satinder Chopra, Saleh Al-Dossary, Fangyu Li, Erwan Gloaguen, Youzuo Lin, Anne Solberg & Hongliu Zeng - 2019 - Interpretation 7 (3):SEi-SEii.
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  14.  9
    Introduction to Special Section: Shale Oil and Gas Enrichment Mechanisms and Effective Development: Concepts, Methodologies, and Case Studies.Dengliang Gao, Zhijun Jin, Taizhong Duan, Hongliu Zeng, Satinder Chopra, Tim Carr, Kurt Marfurt & Jamie Rich - 2018 - Interpretation 6 (4):SNi-SNiii.
    No categories
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  15.  7
    Introduction to Special Section: Shale Oil and Gas Enrichment Mechanisms and Effective Development: Concepts, Methodologies, and Case Studies.Dengliang Gao, Zhijun Jin, Taizhong Duan, Hongliu Zeng, Satinder Chopra, Tim Carr, Kurt Marfurt & Jamie Rich - 2018 - Interpretation: SEG 6 (4):SNi-SNiii.
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  16.  7
    Determination of Target-Oriented Parameters for Computation of Curvature Attributes.Lee Hunt, Bahaa Beshry, Satinder Chopra & Cole Webster - 2018 - Interpretation: SEG 6 (2):T485-T498.
    The application of curvature attributes on seismic horizons or 3D seismic volumes has been discussed in the literature in several ways. Such discussion largely ignores the detail of parameter selection that must be made by the working interpreter or the expert processor. Parameter selection such as window size and filtering methods for seismic curvature estimates have not been extensively compared in the literature and have never been validated using quantitative ground truthing to log or drilling data. Of even greater relevance (...)
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  17.  4
    A Robust Workflow for Performing Joint Impedance Inversion and its Applications.Ritesh Kumar Sharma, Satinder Chopra & Larry R. Lines - 2020 - Interpretation 8 (1):T141-T149.
    Multicomponent seismic data offer several advantages for characterizing reservoirs with the use of the vertical component and mode-converted data. Joint impedance inversion inverts both of these data sets simultaneously; hence, it is considered superior to simultaneous impedance inversion. However, the success of joint impedance inversion depends on how accurately the PS data are mapped on the PP time domain. Normally, this is attempted by performing well-to-seismic ties for PP and PS data sets and matching different horizons picked on PP and (...)
    No categories
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  18. Replacing Conventional Brittleness Indices Determination with New Attributes Employing True Hydrofracturing Mechanism.Ritesh Kumar Sharma, Satinder Chopra & Larry R. Lines - forthcoming - Interpretation:1-62.
    Shale resource plays are associated with low permeability, and hence hydraulic fracturing is required for their stimulation and production. Even though considerable non-uniqueness exists in identifying favorable zones for hydraulic fracturing, geophysicists seem to be avid followers of Rickman et al. ’s, brittleness criteria of low-Poisson’s ratio and high-Young’s modulus, proposed a decade ago. In this study, we highlight the fallacy in following such a criterion for any shale play and propose a new attribute that makes use of strain energy (...)
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  19.  3
    Seismic Reservoir Characterization of the Bone Spring and Wolfcamp Formations in the Delaware Basin: Challenges and Uncertainty in Characterization Using Rock Physics — A Case Study: Part 2.Ritesh Kumar Sharma, Satinder Chopra & Larry Lines - 2020 - Interpretation 8 (4):T1057-T1069.
    The discrimination of fluid content and lithology in a reservoir is important because it has a bearing on reservoir development and its management. Among other things, rock-physics analysis is usually carried out to distinguish between the lithology and fluid components of a reservoir by way of estimating the volume of clay, water saturation, and porosity using seismic data. Although these rock-physics parameters are easy to compute for conventional plays, there are many uncertainties in their estimation for unconventional plays, especially where (...)
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  20.  5
    Introduction to Special Section: Thin Beds.Hongliu Zeng, Kurt Marfurt, Sergey Fomel, Satinder Chopra, Gregory Partyka, Bradley Wallet, Michael Smith, Marcilio Matos, Huailai Zhou, Yihua Cai & Osareni Ogiesoba - 2015 - Interpretation: SEG 3 (3):SSi-SSii.
    No categories
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark