Petroleum Engineering – Production
1. The role of effective thickness of the Asmari Formation zones on oil production

Behzad Orangii; Mohammad Ali Riahi

Volume 10, Issue 2 , Spring 2021

http://dx.doi.org/10.22050/ijogst.2021.278551.1588

Abstract
  This paper investigates the role of the effective thickness of the Asmari reservoir formation zones on oil production in one of the Iranian carbonate oil fields. Effective thickness is a term that includes the total gross thickness of rocks by lithofacies for a selected wellbore. The lithology of the ...  Read More

Geophysics
2. Simplified Automatic Seismic to Well Tying Using Smooth Dynamic Time Warping Technique in R

Afshin Amiri; Majid Bagheri; Mohammad Ali Riahi

Volume 9, Issue 4 , Autumn 2020, , Pages 85-92

http://dx.doi.org/10.22050/ijogst.2020.234641.1552

Abstract
  Seismic well tying is a crucial part of the interpretation phase in exploration seismology. Tying wells usually involves forward modeling a synthetic seismogram from sonic and density logs and then matching the obtained synthetic seismogram to the seismic reflection data. A huge amount of time is required ...  Read More

Petroleum Engineering
3. Identifying Gas-bearing Carbonate Reservoir Using Extended Elastic Impedance

Hessam MansouriSiahgoli; Mohammad Ali Riahi; Bahare Heidari; Reza Mohebian

Volume 9, Issue 3 , Summer 2020, , Pages 102-115

http://dx.doi.org/10.22050/ijogst.2020.218837.1535

Abstract
  It is difficult to identify the carbonate reservoirs by using conventional seismic reflection data, especially in cases where the reflection coefficient of the gas-bearing zone is close to that of the carbonate background. In such cases, the extended elastic impedance (EEI) as a seismic reconnaissance ...  Read More

Geophysics
4. Using a novel method for random noise reduction of seismic records

Majid Bagheri; Mohammad Ali Riahi

Volume 7, Issue 3 , Summer 2018, , Pages 65-72

http://dx.doi.org/10.22050/ijogst.2018.75178.1381

Abstract
  Random or incoherent noise is an important type of seismic noise, which can seriously affect the quality of the data. Therefore, decreasing the level of this category of noises is necessary for increasing the signal-to-noise ratio (SNR) of seismic records. Random noises and other events overlap each ...  Read More

Petroleum Engineering
5. A Comparative Study of the Neural Network, Fuzzy Logic, and Nero-fuzzy Systems in Seismic Reservoir Characterization: An Example from Arab (Surmeh) Reservoir as an Iranian Gas Field, Persian Gulf Basin

Reza Mohebian; Mohammad Ali Riahi; Ali Kadkhodaie-Ilkhchi

Volume 6, Issue 4 , Autumn 2017, , Pages 33-55

http://dx.doi.org/10.22050/ijogst.2017.53907

Abstract
  Intelligent reservoir characterization using seismic attributes and hydraulic flow units has a vital role in the description of oil and gas traps. The predicted model allows an accurate understanding of the reservoir quality, especially at the un-cored well location. This study was conducted in two major ...  Read More

6. Separating Well Log Data to Train Support Vector Machines for Lithology Prediction in a Heterogeneous Carbonate Reservoir

Mohammad Ali Sebtosheikh; Reza Motafakkerfard; Mohammad Ali Riahi; Siyamak Moradi

Volume 4, Issue 2 , Spring 2015, , Pages 1-14

http://dx.doi.org/10.22050/ijogst.2015.9588

Abstract
  The prediction of lithology is necessary in all areas of petroleum engineering. This means that to design a project in any branch of petroleum engineering, the lithology must be well known. Support vector machines (SVM’s) use an analytical approach to classification based on statistical learning ...  Read More

7. 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

8. Support Vector Machine Based Facies Classification Using Seismic Attributes in an Oil Field of Iran

Majid Bagheri; Mohammad Ali Riahi

Volume 2, Issue 3 , Summer 2013, , Pages 1-10

http://dx.doi.org/10.22050/ijogst.2013.3640

Abstract
  Seismic facies analysis (SFA) aims to classify similar seismic traces based on amplitude, phase, frequency, and other seismic attributes. SFA has proven useful in interpreting seismic data, allowing significant information on subsurface geological structures to be extracted. While facies analysis has ...  Read More

9. Delineating Hydrocarbon Bearing Zones Using Elastic Impedance Inversion: A Persian Gulf Example

Haleh Karbalaali; Seyed Reza Shadizadeh; Mohammad Ali Riahi

Volume 2, Issue 2 , Spring 2013, , Pages 8-19

http://dx.doi.org/10.22050/ijogst.2013.3534

Abstract
  Reservoir characterization plays an important role in different parts of an industrial project. The results from a reservoir characterization study give insight into rock and fluid properties which can optimize the choice of drilling locations and reduce risk and uncertainty. Delineating hydrocarbon ...  Read More