Nader Dutta - Academia.edu (original) (raw)
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Papers by Nader Dutta
Journal de physique. Colloque, Nov 1, 1970
Nucleation and Atmospheric Aerosols, 1972
The diagrammatic linked‐cluster many‐body perturbation theory is applied to study the hyperfine c... more The diagrammatic linked‐cluster many‐body perturbation theory is applied to study the hyperfine constant a (in a I⇒·S⇒) for free 55Mn+2 ion. The calculation leads to a hyperfine constant of −363 ± 3 MHz, composed of −358 MHz due to the perturbation of the s cores by the 3d electrons, −14 MHz from consistency effects associated with this perturbation and +9 MHz from correlation effects. The first of these contributions is in very good agreement with the results of moment‐ perturbation (MP) calculations. Results of MP calculations for the divalent iron‐group ions and a few trivalent and one quadrivalent ion are presented and discussed.
International Journal of Quantum Chemistry, Jun 18, 2009
ABSTRACT
Physical Review Letters, Dec 21, 1970
Physical review, Oct 1, 1971
Physical Review, Jan 5, 1969
Physical review, Apr 1, 1970
Physical review, Mar 1, 1970
Physical Review Letters, Oct 14, 1968
Cambridge University Press eBooks, Mar 11, 2021
Cambridge University Press eBooks, Mar 11, 2021
The leading edge, Feb 1, 2002
... Note the behavior of Poisson's ratio at low effective stress. ... Miley and Kess... more ... Note the behavior of Poisson's ratio at low effective stress. ... Miley and Kessinger (1999) demonstrated how to use this effect on shear velocities determined from mode-converted wave reflections for subsalt pore-pressure prediction. ...
The leading edge, Aug 1, 2010
Increased drilling activities in deep water since 1985, especially in the Gulf of Mexico (GOM), h... more Increased drilling activities in deep water since 1985, especially in the Gulf of Mexico (GOM), have revealed numerous hazards in the shallow sediments below the seabed, such as fault scarps, gas vents, unstable slopes, and reefs and shallow subsurface geologic hazards such as faults, gas-charged sediments, buried channels, abnormally pressured sands, and gas hydrates. Drilling risks associated with shallow aquifer-pressured sands or shallow water flow (SWF) sands and gas hydrates have received the most attention. These are global problems. In the GOM alone, more than US$250 million has been lost due to SWF. While the industry has matured in handling these problems, it is estimated that the losses associated with SWF sands continue to be nearly $1.7 million per well in the GOM alone.
arXiv (Cornell University), Nov 19, 2019
A-23 GEOPRESSURE PREDICTION AND ANALYSIS IN DEEPWATER GULF OF MEXICO USING ROCK PHYSICS AND SEISM... more A-23 GEOPRESSURE PREDICTION AND ANALYSIS IN DEEPWATER GULF OF MEXICO USING ROCK PHYSICS AND SEISMIC ATTRIBUTES Abstract 1 N.C. DUTTA¹ S. GELINSKY² M. KHAN ¹ Z. ZHENG² ¹Baker Hughes - Western Geophysical PO Box 2469 Houston TX 77252 USA ²Baker Hughes – Baker Atlas Deepwater drilling is risky and expensive. Proper well planning requires reliable estimates of pore fluid pressure prior to drilling. While drilling monitoring and frequently updating these estimates guarantees environmentally safe drilling. Most common practice to predict pore pressure is to use conventional seismic stacking velocities as porosity indicators in conjunction with a Normal Compaction Trend (NCT)
Journal de physique. Colloque, Nov 1, 1970
Nucleation and Atmospheric Aerosols, 1972
The diagrammatic linked‐cluster many‐body perturbation theory is applied to study the hyperfine c... more The diagrammatic linked‐cluster many‐body perturbation theory is applied to study the hyperfine constant a (in a I⇒·S⇒) for free 55Mn+2 ion. The calculation leads to a hyperfine constant of −363 ± 3 MHz, composed of −358 MHz due to the perturbation of the s cores by the 3d electrons, −14 MHz from consistency effects associated with this perturbation and +9 MHz from correlation effects. The first of these contributions is in very good agreement with the results of moment‐ perturbation (MP) calculations. Results of MP calculations for the divalent iron‐group ions and a few trivalent and one quadrivalent ion are presented and discussed.
International Journal of Quantum Chemistry, Jun 18, 2009
ABSTRACT
Physical Review Letters, Dec 21, 1970
Physical review, Oct 1, 1971
Physical Review, Jan 5, 1969
Physical review, Apr 1, 1970
Physical review, Mar 1, 1970
Physical Review Letters, Oct 14, 1968
Cambridge University Press eBooks, Mar 11, 2021
Cambridge University Press eBooks, Mar 11, 2021
The leading edge, Feb 1, 2002
... Note the behavior of Poisson's ratio at low effective stress. ... Miley and Kess... more ... Note the behavior of Poisson's ratio at low effective stress. ... Miley and Kessinger (1999) demonstrated how to use this effect on shear velocities determined from mode-converted wave reflections for subsalt pore-pressure prediction. ...
The leading edge, Aug 1, 2010
Increased drilling activities in deep water since 1985, especially in the Gulf of Mexico (GOM), h... more Increased drilling activities in deep water since 1985, especially in the Gulf of Mexico (GOM), have revealed numerous hazards in the shallow sediments below the seabed, such as fault scarps, gas vents, unstable slopes, and reefs and shallow subsurface geologic hazards such as faults, gas-charged sediments, buried channels, abnormally pressured sands, and gas hydrates. Drilling risks associated with shallow aquifer-pressured sands or shallow water flow (SWF) sands and gas hydrates have received the most attention. These are global problems. In the GOM alone, more than US$250 million has been lost due to SWF. While the industry has matured in handling these problems, it is estimated that the losses associated with SWF sands continue to be nearly $1.7 million per well in the GOM alone.
arXiv (Cornell University), Nov 19, 2019
A-23 GEOPRESSURE PREDICTION AND ANALYSIS IN DEEPWATER GULF OF MEXICO USING ROCK PHYSICS AND SEISM... more A-23 GEOPRESSURE PREDICTION AND ANALYSIS IN DEEPWATER GULF OF MEXICO USING ROCK PHYSICS AND SEISMIC ATTRIBUTES Abstract 1 N.C. DUTTA¹ S. GELINSKY² M. KHAN ¹ Z. ZHENG² ¹Baker Hughes - Western Geophysical PO Box 2469 Houston TX 77252 USA ²Baker Hughes – Baker Atlas Deepwater drilling is risky and expensive. Proper well planning requires reliable estimates of pore fluid pressure prior to drilling. While drilling monitoring and frequently updating these estimates guarantees environmentally safe drilling. Most common practice to predict pore pressure is to use conventional seismic stacking velocities as porosity indicators in conjunction with a Normal Compaction Trend (NCT)