
Ahmed N. Al-DujailiAmirkabir University of Technology | TUS · Department of Petroleum Engineering
Ahmed N. Al-Dujaili
Ph.D. Petroleum Enginnering
AmirKabir University of Technology
About
49
Publications
19,222
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
112
Citations
Introduction
Formation Evaluation , Simulation , Reservoir Characterization , Core Analysis
Publications
Publications (49)
Several mechanisms were postulated to reduce drilling problems, improve hole cleaning characteristics, and keep the bit in good condition for the second usage. This study was conducted on Majnoon Field in southeastern Iraq to optimize the bit and drilling parameters. The results indicated that the 16” SFD75D bit proved the preferred bit for both ve...
Drilling challenges in the Mesopotamian Basin, Southern Iraq, are varied and include such issues as mud loss, bit damage, and differential sticking. This study aims to analyze these problems across the stratigraphic column in the study area. The results show that the MMD65R, EQH16R, and SF74R bits were successfully used for the 16” section, while t...
Drilling challenges in the Mesopotamian Basin, Southern Iraq, are varied and include such issues as mud loss, bit damage, and differential sticking. This study aims to analyze these problems across the stratigraphic column in the study area. The results show that the MMD65R, EQH16R, and SF74R bits were successfully used for the 16” section, while t...
The Mishrif Formation in Southern Iraq is a major carbonate reservoir with significant hydrocarbon potential. However, its complex geology presents challenges for efficient oil recovery. This study investigates the optimization of oil recovery and economic outcomes by integrating dynamic modeling and well-spacing strategies in the Mishrif Formation...
The identification studies of rock and reservoir characteristics are essential for evaluating the efficiency of a reservoir by analyzing the types of rock and pores. In this study, Nuclear Magnetic Resonance (NMR) for six wells was utilized to identify the rock and reservoir characteristics of the Mishrif formation in the South of the Zubair Field,...
The gas lift technique applies gas bubble injection into the vertical wells to raise production. Gas and liquid rates, shifts in flow regimes, and system equilibrium influence this process. This study explores the efficient implementation of gas lift techniques to maximize production from the Asmari Formation in the Abu Ghirab Field, southeastern I...
This study was accomplished in oil drilling wells located in the Mishrif and Mauddud carbonate formations and in the Zubair sandstone formation to ensure safer, efficient, and economical cementing operations, a better bond between the cement, casing, and formation, and a better isolation between the zones. Moreover, it was also undertaken to obtain...
This study was accomplished to estimate overburden, pore, and fracture pressure and their gradients in the Nasiriya, West Qurna, Rumaila, Zubair, and Majnoon fields in southern Iraq by sonic and resistivity methods and then compare the results with mud weight method.
This study explores the efficient implementation of gas lift techniques to maximize production from the Asmari Formation in the Abu Ghirab Field, southeastern Iraq, using a continuous gas lift for maximum production rate by PIPESIM TM software.
The objective of this study is to construct a reservoir model for the Buzurgan field in southeastern Iraq, which matches the actual measurements of field data, predict reservoir performance from this model from (2007 to 2032), and know the effect of SOR on oil recovery by the numerical reservoir simulation package in Petrel TM.
Currently, most oilfields are in the final stages of development, making enhanced oil recovery (EOR) methods essential for
efficient oil extraction. Among these methods, nitrogen injection has proven particularly effective. EOR encompasses
advanced techniques aimed at maximizing oil extraction throughout an oilfield's productive lifespan. The pro...
The Mishrif sequence in the West Qurna oilfield is a long-term, second-order shallowing-upward cycle with a regional unconformity at the top. Due to changes in rock textures and pore types, permeability in the Mishrif is highly variable (ranging from < 0.01 to > 1000 mD) and does not generally correlate well to porosity. Nevertheless, there is gene...
Oil recovery could be impacted by the relation between vertical permeability (Kv) and horizontal permeability (Kh) (Kv/Kh). 4816 plugs that have been getting hold of 18 wells of Mishrif formation in the West Qurna oilfield were used. Kv/Kh data provided some scatter, but the mean is ~1. Kv/Kh =1 was used for the Petrel model before upscaling accord...
Oil recovery could be impacted by the relation between vertical permeability (Kv) and horizontal permeability (Kh) (Kv/Kh). 4816 plugs that have been getting hold of 18 wells of Mishrif formation in the West Qurna oilfield were used. Kv/Kh data provided some scatter, but the mean is ~1. Kv/Kh =1 was used for the Petrel model before upscaling accord...
Identification of Petrophysical and Geomechanical Characterization for Sadi FGormation in WQ, Rumaila, Zubair, and Majnoon Fields- Southern Iraq.
This study was accomplished to review the drilling problems in North Rumaila Field, Southern Iraq. A statistical analysis for each Formation reflecting the effect of problems during the drilling process with overall analysis for the selected part of the Field was done and enhanced by the recorded mud logs.
In this study, the researchers attempted to identify Mishrif Formation's characteristics (Rock types, Pore Throat Radius, and Flow Units) in the Southern part of the Zubair Field using Nuclear Magnetic Resonance (NMR) data for two wells along the Rafdiya dome and two other in Safwan dome and finally two wells from the west flank of the field to des...
This study considered the complexity of Mishrif geology and its effect on fluid movement within and across Mishrif reservoir intervals. For this purpose, we analyzed the following items: the multiple interval communication with high permeability contrast, the geological setting of the upper Mishrif (mA) interval, the channel structure in the Lower...
The special core analysis tests were accomplished on a set of core plugs for Mishrif Formation (mA, mB1, and mB2cde/mC units) in West Qurna/1 oilfield, southern Iraq. Oil relative permeability (Kro) data and the Corey-type fit of the data as functions of the brine saturation at the core outlet face for individual samples in the water-oil imbibition...
In this study, the researchers attempted to build models that are more accurate by using lithofacies data along the field. Using a wider field area and extended data from both electrofacies and lithofacies could provide an accurate model of the reservoir description that will be useful for future field developments. The stochastic and deterministic...
Well R-XX3 is a Mishrif S-shape well drilled to 2501 m MD BRT in the North Rumaila oilfield. Well R-XX3 was drilled in targeting the Mishrif reservoir in order to be an oil producer well.
The well was drilled with four sections:
• 26” hole – 20” casing – Pre-set at 47m offline.
• 17 ½” hole – 13 3/8” casing – Drilled to 607m MD BRT with Extended...
Editorial board member of Petroleum Science and Engineering.
Rumaila Formation previously or (mC) recently as a part of Mishrif Formation is the interval between Ahmedi and Mishrif Formation. The characterization of this interval shows an average porosity of 0.21%, average water saturation of 55%, a permeability of 5-10 mD, and reserves of 2.8 GBO. Based on the lower Mishrif Development Plan (mB2 & mC) will...
Many studies have been accomplished by ignoring the complexity of Mishrif geology and its effect on water movement within and across Mishrif reservoir Intervals. This study considered this issue in order to analyze the multiple intervals communications with high permeability contrast, mA interval geological setting well undefined before, channels s...
The development plans are based on current knowledge of the reservoirs. Data collection and appraisal activities will continue in order to lead to a better understanding of the reservoir performance. As more data becomes available, development plans and drilling programs are subject to change based on emerging field information. Achieving 1.1 MBD f...
Many studies have been accomplished by ignoring the complexity of Mishrif geology and its effect on water movement within and across Mishrif reservoir Intervals. This study considered this issue in order to analyze the multiple intervals communications with high permeability contrast, mA interval geological setting well undefined before, channels s...
The current study was prepared for all Mishrif vertical, deviated, horizontal, and Mauddud horizontal wells. The only changes from well to well to be expected are the number of centralizers depending on the actual well profile and cement slurry volumes based on the actual well depth and hole size.
As water injection progressed, the severity of water-cut evolution in Mishrif vertical wells demonstrated further evidence necessitating a change of the depletion plan.
Two geological models for Mishrif Formation in the West Qurna/1 oilfield have been built using stochastic and deterministic methods. The results showed that the deterministic geological model was closer than the stochastic model according to the estimation of oil reserves in the latest study for the Basra Oil Company. The difference was approximate...
The impact of critical Inclination and drilling Azimuth for the West Qurna-1 oilfield, Southern Iraq.
deterministic and stochastic models under review
A special core analysis program was conducted on core material from Mishrif formation, West Qurna/1 oil Field in Iraq. The samples were from three lithofacies, mA, mB1, and mB2cde/mC.
Water-oil imbibition capillary pressure and relative permeability measurements were made on sixteen preserved core plugs from four lithofacies.
This study has been accomplished by testing three different models to determine rocks type, pore throat radius, and flow units for Mishrif Formation in West Qurna oilfield in Southern Iraq based on Mishrif full diameter cores from 20 wells. The three models that were used in this study were Lucia rocks type classification, Winland plot was utilized...
This study has been accomplished by testing three different models to determine rocks type, pore throat radius, and flow units for Mishrif Formation in West Qurna oilfield in Southern Iraq based on Mishrif full diameter cores from 20 wells. The three models that were used in this study were Lucia rocks type classification, Winland plot was utilized...
At present, reservoir whether isotropy or anisotropy is taking more attention, particularly the difference in (porosity, permeability, and capillary pressure) associated with pore space. These differences are due to the original sediments and thus diagenetic changes. It has been found that common models are insufficient to predict reservoir perform...
At present, reservoir whether isotropy or anisotropy is taking more attention, particularly the difference in (porosity, permeability, and capillary pressure) associated with pore space. These differences are due to the original sediments and thus diagenetic changes. It has been found that common models are insufficient to predict reservoir perform...
Enhanced oil recovery is used in many mature oil reservoirs to increase the oil recovery factor. Surfactant flooding has recently gained interest again. To create microemulsions at the interface between crude oil and water, surfactant flooding is the injection of surfactants (and co-surfactants) into the reservoir, thus achieving very low interfaci...
Enhanced oil recovery is used in many mature oil reservoirs to increase the oil recovery factor. Surfactant flooding has recently gained interest again. To create microemulsions at the interface between crude oil and water, surfactant flooding is the injection of surfactants (and co-surfactants) into the reservoir, thus achieving very low interfaci...
Enhanced oil recovery is used in many mature oil reservoirs to increase the oil recovery factor. Surfactant flooding has recently gained interest again. To create microemulsions at the interface between crude oil and water, surfactant flooding is the injection of surfactants (and co-surfactants) into the reservoir, thus achieving very low interfaci...
Questions
Questions (2)
Here the answer
It is from my experience
Ahmed
Is there a high percentage of matching between the stochastic models that are built using lithofacies and electofacies data?