Experimental evaluation of Carbon Dioxide-Assisted Gravity Drainage process (CO2-AGD) to improve oil recovery in reservoirs with strong water drive

Dahlia A. Al-Obaidi; Watheq J. Al-Mudhafar; Mohammed Saleh Al-Jawad

doi:https://doi.org/10.1016/j.fuel.2022.124409

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Publication Date

Thu Sep 01 2022

Journal Name

Fuel

Volume

324

DOI

https://doi.org/10.1016/j.fuel.2022.124409

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Experimental evaluation of Carbon Dioxide-Assisted Gravity Drainage process (CO2-AGD) to improve oil recovery in reservoirs with strong water drive

GAGD

Gravity Drainage

oil recovery

Carbon Dioxide

CO2-AGD

Dahlia A. Al-Obaidi

Watheq J. Al-Mudhafar

Mohammed Saleh Al-Jawad

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Publication Date

Sat Oct 28 2023

Journal Name

Baghdad Science Journal

Synthesis and Characterization of Calcium Oxide Impregnated on Silica from Duck Egg Shells and Rice Husks as Heterogeneous Catalysts for Biodiesel Synthesis

biodiesel

duck egg shell

calcium oxide

rice husk

silica

Haryono

Safri

Isy

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Biodiesel can be prepared from various types of vegetable oils or animal fats with the aid of a catalyst.
Calcium oxide (CaO) is one of the prospective heterogeneous catalysts for biodiesel synthesis. Modification
of CaO by impregnation on silica (SiO2) can improve the performance of CaO as catalyst. Egg shells and rice
husks as biomass waste can be used as raw materials for the preparation of the silica modified CaO catalyst.
The present study was directed to synthesize and characterize CaO impregnated SiO2 catalyst from biomass
waste and apply it as catalyst in biodiesel synthesis. The catalyst was synthesized by wet impregnation
method and characterized by x-ray diffraction, x-ray fluorescence, nitr

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Publication Date

Sun Jan 01 2023

Journal Name

Materials Science In Semiconductor Processing

A dual S-scheme g-C3N4/Fe3O4/Bi2WO6/Bi2S3 heterojunction for improved photocatalytic decomposition of methylene blue: Proposed mechanism, and stability studies

Aya A

Abeer I.

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(59)

(56)

Publication Date

Sun Jan 01 2023

Journal Name

Process Safety And Environmental Protection

Applications of advanced oxidation processes (Electro‑Fenton and sono‑electro‑Fenton) for COD removal from hospital wastewater: Optimization using response surface methodology

Abdulla Y.

Ali H.

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(60)

Publication Date

Tue Nov 25 2025

Journal Name

Inorganic Chemistry Communications

Synthesis, spectroscopic and single-crystal analysis, and DFT studies of N₂O₂ diamine coordination complexes: solvent-driven geometry switching and NLO properties

Tetradentate N2O2 ligand

Diamine-based complexes

X-ray crystallography

Solvent-driven geometry transformation

DFT studies

Nonlinear optical properties

Baidaa

Mohamad

Jasim

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The design of coordination compounds with solvent-responsive optical properties remains a central challenge in molecular photonics. Here, we describe the synthesis and full characterisation of a symmetrical tetradentate diamine ligand, 3,3′-((1,2-phenylenebis(azanediyl))- bis(methanylylidene))bis(pentane-2,4-dione) (H₂L), and its neutral square-planar complexes [M(L)] (M(II) = Co, Ni, Cu). The Cu(II) complex crystallised as [Cu(L)]⋅0.5 (pyrazine), adopting a nearly square-planar geometry (τ₄ = 0.06) in the solid state, as confirmed by single-crystal X-ray diffraction. In DMSO solution, UV–Vis spectra revealed reversible axial coordination of two solvent molecules, driving a transformation to a distorted octahedral geometry. Struc

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Publication Date

Mon Sep 23 2024

Journal Name

Journal Of Inorganic And Organometallic Polymers And Materials

Quaternary Biocomposite of Chitosan-Polyvinyl Alcohol/Food Grade Algae/ Montmorillonite Clay for Cationic Methyl Violet 2B Dye Removal: Optimization and Desirability Functions

Muna Sarhan

Ali H.

Ahlam M.

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Publication Date

Thu Oct 01 2015

Journal Name

Journal Of Hazardous Materials

Cement kiln dust (CKD)-filter sand permeable reactive barrier for the removal of Cu(II) and Zn(II) from simulated acidic groundwater

Abbas H.

Ayad A.H.

Qusey M.

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(54)

(52)

Publication Date

Sat May 01 2021

Journal Name

Journal Of Physics: Conference Series

Metal Complexes of Multidentate N2S2 Heterocyclic Schiff-base Ligands;Formation, Structural Characterisation and Biological Activity

Mohamad J.

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AbstractThe synthesis of ligands with N2S2 donor sets that include imine, an amide, thioether, thiolate moieties and their metal complexes were achieved. The new Schiff-base ligands; N-(2-((2,4-diphenyl-3-azabicyclo[3.3.1]nonan-9-ylidene)amino)ethyl)-2-((2-mercaptoethyl)thio)-acetamide (H2L1) and N-(2-((2,4-di-p-tolyl-3-azabicyclo[3.3.1]nonan-9-ylidene)amino)ethyl)-2-((2-mercaptoethyl)thio) acetamide (H2L2) were obtained from the reaction of amine precursors with 1,4-dithian-2-one in the presence of triethylamine as a base in the CHCl3 medium. Complexes of the general formula K2< ... Show More

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(4)

Publication Date

Sat Feb 07 2026

Journal Name

Sensing And Imaging

Manufacturing and Improving Reduced Graphene Oxide (rGO) Membranes for Use as Highly Sensitive Humidity Sensors Based on the Mechanism of Proton Conductivity

Ahmed K.

Eman K.

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Publication Date

Thu Mar 18 2010

Journal Name

Spe Projects, Facilities & Construction

Correlating Optimum Stage Pressure for Sequential Separator Systems

separation and treating

PVT measurement

optimization problem

Upstream Oil & Gas

Phase Behavior

objective function

optimum stage pressure

GOR

Artificial Intelligence

Mohammed S.

Omar

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SummaryA study to find the optimum separators pressures of separation stations has been performed. Stage separation of oil and gas is accomplished with a series of separators operating at sequentially reduced pressures. Liquid is discharged from a higher-pressure separator into the lower-pressure separator. The set of working separator pressures that yields maximum recovery of liquid hydrocarbon from the well fluid is the optimum set of pressures, which is the target of this work.A computer model is used to find the optimum separator pressures. The model employs the Peng-Robinson equation of state (Peng and Robinson 1976) for volatile oil. The application of t ... Show More

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Publication Date

Sat Jun 21 2025

Journal Name

Journal Of University Of Anbar For Pure Science

Semi – automated analysis for the Nanoscale determination of Chlorpheniramine maleate drug using sodium nitroprusside by continuous flow feed via homemade NAG-SSP Photometer

CFIA

Turbidity

sodium nitroprusside

chlorpheniramine maleate

NAG-SSP-5S-1D Analyzer

Spectrophotometric method

asma

Nagham S. Turkey

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This study presents a rapid, sensitive, and straightforward approach to measure chlorpheniramine maleate (CPM) by using turbidity CFIA. The method involves CPM reacting with sodium nitroprusside (Nitropress) to produce a pale white precipitate. The NAG-SSP-5S1D analyzer was used to measure turbidity at 0°–180° angle to detect the attenuation of incident light as a result of collision on the surfaces of the precipitate particles. The linear range of CPM measurements was between 0.008 and 11 m.mol/L, with correlation coefficient of 0.9983 and R2% = 99.65. The limit of detection was determined to be 0.0328 µg/sample from the lowest concentration in the calibration curve, and the repeatability of the method (RSD%) was less than 0.4% (n = 6

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