A New NMR Method of Fluid Characterization in Reservoir Rocks: Experimental Confirmation and Simulation Results

SPE Journal ◽  
2001 ◽  
Vol 6 (04) ◽  
pp. 452-464 ◽  
Author(s):  
R. Freedman ◽  
S. Lo ◽  
M. Flaum ◽  
G.J. Hirasaki ◽  
A. Matteson ◽  
...  
Keyword(s):  
Experimental Confirmation ◽  
Reservoir Rocks ◽  
Nmr Method ◽  
Simulation Results ◽  
Fluid Characterization

scholarly journals Advance Use For The NMR Relaxometry To Investigate Reservoir Rocks

2020 ◽  
Author(s):  
Sudad H Al-Obaidi ◽  
Patkin AA ◽  
Guliaeva NI
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Quantitative Assessment ◽  
Oil Fields ◽  
Rapid Methods ◽  
Reservoir Rocks ◽  
Nmr Method ◽  
Core Samples ◽  
Nmr Relaxometry

In this work, the capabilities of the Nuclear magnetic resonance (NMR) method fordetermining the petrophysical parameters of reservoir rocks were considered. For thispurpose, rock samples from several oil fields have been investigated. NMR investigationmethod was used as one of the rapid methods for assessing the potential properties ofreservoir rocks without causing damage to the studied models. It was shown that the resultsof measurements on the cuttings agree with the results obtained by core samples. It wasrevealed that this method can be used for quantitative assessment of the content of clayminerals and determination of their type. Moreover, the nature of the dependence of the porosity parameter on the NMR porosity, which satisfies the well-known equations, has been experimentally established.

Diagonal Mode van der Pauw Stress Sensors: Proof of Diagonal-Mode Conjecture

2018 ◽  
Vol 140 (4) ◽  
Author(s):  
Richard C. Jaeger ◽  
Jeffrey C. Suhling ◽  
Jun Chen
Keyword(s):  
Experimental Confirmation ◽  
Stress Sensors ◽  
Impedance Parameter ◽  
Simulation Results ◽  
Van Der Pauw

The conjecture discussed in our previous paper [Jaeger, R. C., Motalab, M., Hussain, S., and Suhling, J. C., 2014, “Four-Wire Bridge Measurements of Silicon van der Pauw Stress Sensors,” ASME J. Electron. Packag., 136(4), p. 041014; Jaeger, R. C., Motalab, M., Hussain, S., and Suhling, J. C., 2018, Erratum: “Four-Wire Bridge Measurements of Silicon van der Pauw Stress Sensors,” ASME J. Electron. Packag., 140(1), p. 017001] was backed up by measurements and simulation results, but not mathematically proven. A proof based upon two-port impedance parameter reciprocity is presented with additional experimental confirmation.

Losses of atrazine, metolachlor, prosulfuron and triasulfuron in subsurface drain water. II. Simulation results

Agronomie ◽  
2002 ◽  
Vol 22 (4) ◽  
pp. 413-425 ◽  
Author(s):  
Matteo Balderacchi ◽  
Ghasam Alavi ◽  
Ettore Capri ◽  
Alberto Vicari ◽  
Cesare Accinelli ◽  
...  
Keyword(s):  
Drain Water ◽  
Simulation Results

Study and design of dual stator permanent magnet machine with spoke-type configurations using phase-group concentrated-coil windings

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1381-1389
Author(s):  
Dezhi Chen ◽  
Chengwu Diao ◽  
Zhiyu Feng ◽  
Shichong Zhang ◽  
Wenliang Zhao
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnets ◽  
Low Cost ◽  
Dynamic Performance ◽  
Torque Ripple ◽  
Permanent Magnet Machine ◽  
Torque Density ◽  
Phase Group ◽  
High Torque ◽  
Simulation Results

In this paper, a novel dual-stator permanent magnet machine (DsPmSynM) with low cost and high torque density is designed. The winding part of the DsPmSynM adopts phase-group concentrated-coil windings, and the permanent magnets are arranged by spoke-type. Firstly, the winding structure reduces the amount of copper at the end of the winding. Secondly, the electromagnetic torque ripple of DsPmSynM is suppressed by reducing the cogging torque. Furthermore, the dynamic performance of DsPmSynM is studied. Finally, the experimental results are compared with the simulation results.

WS-Security on PRODML

2014 ◽  
Vol 1 (1) ◽  
pp. 9-34
Author(s):  
Bobby Suryajaya
Keyword(s):  
Web Services ◽  
Digital Signature ◽  
Data Transfer ◽  
Web Services Security ◽  
Soap Message ◽  
Simulation Results ◽  
End To End

SKK Migas plans to apply end-to-end security based on Web Services Security (WS-Security) for Sistem Operasi Terpadu (SOT). However, there are no prototype or simulation results that can support the plan that has already been communicated to many parties. This paper proposes an experiment that performs PRODML data transfer using WS-Security by altering the WSDL to include encryption and digital signature. The experiment utilizes SoapUI, and successfully loaded PRODML WSDL that had been altered with WSP-Policy based on X.509 to transfer a SOAP message.

Dynamics of the macromolecular composition of the biomass of microalgae in the morning under natural light. Model

2020 ◽  
pp. 45-52
Author(s):  
Alexander S. Lelekov ◽  
Anton V. Shiryaev
Keyword(s):  
Biochemical Composition ◽  
Initial Conditions ◽  
Natural Light ◽  
Photoautotrophic Growth ◽  
Structural Part ◽  
Basic Model ◽  
Microalgae Culture ◽  
Simulation Results ◽  
Structural Parts ◽  
Macromolecular Composition

The work is devoted to modeling the growth of optically dense microalgae cultures in natural light. The basic model is based on the idea of the two-stage photoautotrophic growth of microalgae. It is shown that the increase in the intensity of sunlight in the first half of the day can be described by a linear equation. Analytical equations for the growth of biomass of microalgae and its macromolecular components are obtained. As the initial conditions, it is assumed that at the time of sunrise, the concentration of reserve biomass compounds is zero. The simulation results show that after sunrise, the growth of the microalgae culture is due only to an increase in the reserve part of the biomass, while the structural part practically does not change over six hours. Changes in the ratio of the reserve and structural parts of the biomass indicate a change in the biochemical composition of cells.

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