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Chandra Rai [8]Chandra S. Rai [1]
  1.  4
    Machine Learning Regressors and Their Metrics to Predict Synthetic Sonic and Mechanical Properties.Ishank Gupta, Deepak Devegowda, Vikram Jayaram, Chandra Rai & Carl Sondergeld - 2019 - Interpretation 7 (3):SF41-SF55.
    Planning and optimizing completion design for hydraulic fracturing require a quantifiable understanding of the spatial distribution of the brittleness of the rock and other geomechanical properties. Eventually, the goal is to maximize the stimulated reservoir volume with minimal cost overhead. The compressional and shear velocities can also be used to calculate Young’s modulus, Poisson’s ratio, and other mechanical properties. In the field, sonic logs are not commonly acquired and operators often resort to regression to predict synthetic sonic logs. We have (...)
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  2.  18
    Rock Typing in the Upper Devonian – Lower Mississippian Woodford Shale Formation, Oklahoma, Usa.Ishank Gupta, Chandra Rai, Carl Sondergeld & Deepak Devegowda - 2018 - Interpretation: SEG 6 (1):SC55-SC66.
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    Rock Typing in the Upper Devonian-Lower Mississippian Woodford Shale Formation, Oklahoma, USA.Ishank Gupta, Chandra Rai, Carl Sondergeld & Deepak Devegowda - 2018 - Interpretation 6 (1):SC55-SC66.
    Most U.S. shale plays are spatially extensive with regions of different thermal maturity and varying production prospects. With increasing understanding of the heterogeneity, microstructure, and anisotropy of shales, efforts are now directed to identifying the sweet spots and optimum completion zones in any shale play. Rock typing is a step in this direction. We have developed an integrated workflow for rock typing using laboratory-petrophysical measurements on core samples and well logs. A total of seven wells with core data were considered (...)
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  4. Stratigraphic Variability of Mississippian Meramec Chemofacies and Petrophysical Properties Using Machine Learning and Geostatistical Modeling,STACK Trend, Anadarko Basin, Oklahoma.Laynie Hardisty, Matthew J. Pranter, Deepak Devegowda, Kurt J. Marfurt, Carl Sondergeld, Chandra Rai, Ishank Gupta, Heyleem Han, Son Dang, Chris T. McLain & Richard E. Larese - forthcoming - Interpretation:1-59.
    Mississippian Meramec deposits and reservoirs in the Sooner Trend in the Anadarko in Canadian and Kingfisher counties play of central Oklahoma are comprised of silty limestones, calcareous sandstones, argillaceous-calcareous siltstones, argillaceous siltstones, and mudstones. We have used core-derived X-ray fluorescence data and established environmental proxies to evaluate the occurrence of specific elements and to illustrate their stratigraphic variability. For the Mississippian Meramec, six indicator elements or element ratios serve as proxies for clay, detrital sediment, carbonate deposits, calcite cement, and biogenic (...)
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  5.  3
    Effect of Mineralogy and Organic Matter on Mechanical Properties of Shale.Vikas Kumar, Carl Sondergeld & Chandra S. Rai - 2015 - Interpretation: SEG 3 (3):SV9-SV15.
    We report a nanoindentation study of shales on 144 samples from Barnett, Eagle Ford, Haynesville, Kimmeridge, Ordovician, and Woodford plays. Mineralogy is found to play an important role in controlling mechanical properties of shales: An increase in carbonate and quartz content is correlated with an increase in Young’s modulus, whereas an increase in total organic content, clay content, and porosity decreases Young’s modulus. We had a close agreement between indentation moduli measured on small samples and dynamic moduli calculated from velocity (...)
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  6. Mississippian Meramec Lithologies and Petrophysical Property Variability, Stack Trend, Anadarko Basin, Oklahoma.Michael J. Miller, Matthew J. Pranter, Ishank Gupta, Deepak Devegowda, Kurt J. Marfurt, Carl Sondergeld, Chandra Rai, Chris T. McLain, James Larese & Richard E. Packwood - 2021 - Interpretation 9 (2):SE1-SE21.
    Mississippian Meramec reservoirs of the Sooner Trend in the Anadarko in Canadian and Kingfisher Counties play are comprised of silty limestones, calcareous siltstones, argillaceous calcareous siltstones, argillaceous siltstones, and mudstones. We found that core-defined reservoir lithologies are related to petrophysics-based rock types derived from porosity-permeability relationships using a flow-zone indicator approach. We classified lithologies and rock types in noncored wells using an artificial neural network with overall accuracies of 93% and 70%, respectively. We observed that mudstone-rich rock type 1 exhibits (...)
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  7.  1
    Spatial Delineation of Rock Types in the Meramec Formation by Integrating Core and Seismic Measurements, Loyal Area, Kingfisher County, Anadarko Basin.Swetal Patel, Ishank Gupta, Jing Fu, Ali Tinni, Kurt J. Marfurt, Carl Sondergeld & Chandra Rai - 2021 - Interpretation 9 (2):SE23-SE34.
    The Mississippian-age Sooner Trend Anadarko Canadian Kingfisher area of Oklahoma is one of the more important new resource plays in North America. It consists of multilevel drilling targets, including mudrock, siltstone, and carbonate reservoirs, some of which are self-sourced and all of which require hydraulic fracturing to produce commercial quantities of oil. The efficacy of the fracturing relies on whether the created fracture network drains from producible rock types. We have integrated data at core and seismic resolution scales to map (...)
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  8.  1
    Mechanical Stratigraphy of Mississippian Strata Using Machine Learning and Seismic-Based Reservoir Characterization and Modeling, Anadarko Basin, Oklahoma.Jerson Tellez, Matthew J. Pranter, Carl Sondergeld, Chandra Rai, Jing Fu, Heyleem Han, Son Dang & Chris McLain - forthcoming - Interpretation:1-62.
    The STACK play primarily produces oil and gas from Mississippian strata. The interval consists of interbedded argillaceous mudstones and calcareous siltstones. Such contrast in rock composition is linked directly to the mechanical stratigraphy of the strata. Brittle and ductile beds are related to the sequence-stratigraphic framework at different scales. We use seismic and well log data to estimate and map geomechanical properties distribution and interpret the mechanical stratigraphy of rocks within the Mississippian strata. First, we defined the parasequences that form (...)
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  9. Mechanical Stratigraphy of Mississippian Strata Using Machine Learning and Seismic-Based Reservoir Characterization and Modeling, Anadarko Basin, Oklahoma.Javier Tellez, Matthew J. Pranter, Carl Sondergeld, Chandra Rai, Jing Fu, Heyleem Han, Son Dang & Chris McLain - 2021 - Interpretation 9 (2):SE53-SE71.
    The Sooner Trend in the Anadarko in Canadian and Kingfisher counties play primarily produces oil and gas from Mississippian strata. The interval consists of interbedded argillaceous mudstones and calcareous siltstones. Such a contrast in rock composition is linked directly to the mechanical stratigraphy of the strata. Brittle and ductile beds are related to the sequence-stratigraphic framework at different scales. We have used seismic and well-log data to estimate and map the geomechanical properties’ distribution and interpret the mechanical stratigraphy of rocks (...)
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