Research Paper
2. Comparing Geostatistical Seismic Inversion Based on Spectral Simulation with Deterministic Inversion: A Case Study

Hamid Reza Ansari; Reza Motafakkerfard; Mohammad Ali Riahi

Volume 3, Issue 1 , Winter 2014, Pages 1-14

http://dx.doi.org/10.22050/ijogst.2014.5796

Abstract
  Seismic inversion is a method that extracts acoustic impedance data from the seismic traces. Source wavelets are band-limited, and thus seismic traces do not contain low and high frequency information. Therefore, there is a serious problem when the deterministic seismic inversion is applied to real data ...  Read More

Research Paper
3. An Investigation of Abnormal Fluid Pressure within an Evaporitic Cap Rock in the Gavbandi Area of Iran and its Impact on the Planning of Gas Exploration Wells

Mahdi Najafi; Abbas Bahroudi; Ali Yassaghi; Jaume Vergés; Shahram Sherkati

Volume 3, Issue 1 , Winter 2014, Pages 15-21

http://dx.doi.org/10.22050/ijogst.2014.5797

Abstract
  A synthesis of well logs was carried out and drilling mud weight data were analyzed to figure out anomalous high fluid pressure within the Triassic evaporitic cap rock (the Dashtak formation) and study its impact on the geometry of anticlinal traps in the gas rich Gavbandi province located in the southeast ...  Read More

Research Paper
4. An Estimation of Wave Attenuation Factor in Ultrasonic Assisted Gravity Drainage Process

Behnam Keshavarzi; Mohammad Javad Shojaei; Mohammad Hossein Ghazanfari; Cyrus Ghotbi

Volume 3, Issue 1 , Winter 2014, Pages 22-33

http://dx.doi.org/10.22050/ijogst.2014.5798

Abstract
  It has been proved that ultrasonic energy can considerably increase the amount of oil recovery in an immiscible displacement process. Although many studies have been performed on investigating the roles of ultrasonic waves, based on the best of our knowledge, little attention has been paid to evaluate ...  Read More

5. The Generalized Maxwell-Stefan Model Coupled with Vacancy Solution Theory of Adsorption for Diffusion in Zeolites

Seyyed Milad Salehi; Mahmood Reza Rahimi

Volume 3, Issue 1 , Winter 2014, Pages 34-40

http://dx.doi.org/10.22050/ijogst.2014.5800

Abstract
  It seems using the Maxwell-Stefan (M-S) diffusion model in combination with the vacancy solution theory (VST) and the single-component adsorption data provides a superior, qualitative, and quantitative prediction of diffusion in zeolites. In the M-S formulation, thermodynamic factor (Г) is an essential ...  Read More

Research Paper
6. Effect of Molar Ratio and Resin Modification on the Protection Properties of Zinc-rich Alkali Silicate Primer

Iman Mirzaie Goodarzi; Mansour Farzam; Mohammad Reza Shishesaz; Davood Zaarei

Volume 3, Issue 1 , Winter 2014, Pages 41-53

http://dx.doi.org/10.22050/ijogst.2014.5801

Abstract
  The influence of increasing the SiO2/K2O molar ratio on the electrochemical action of a waterborne potassium silicate zinc-rich coating was investigated by means of electrochemical impedance spectroscopy (EIS) and corrosion potential (Ecorr) measurements. The EIS results showed that increasing the SiO2/K2O ...  Read More

Research Paper
7. Resonance Ultrasonic Spectroscopy of a Nanofibrous Composite and Studying the Effect of Surface/Interface

Kobra Kalvandi; Sina Sodagar

Volume 3, Issue 1 , Winter 2014, Pages 54-64

http://dx.doi.org/10.22050/ijogst.2014.5815

Abstract
  Resonances are intrinsic characteristics of an elastic object, which are completely independent of the source of excitation. The appropriate utilization of the information contained within the resonance spectra and the identification of the resonance frequencies of the object can be used as a potent ...  Read More