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Synthesis of BSCFO Ceramics Membrane Using a Simple Complexing Method and Experimental Study of Sintering Parameters

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Journal of Materials Science & Technology 2010年第10期26卷 914-920页

作者： Ensieh Ganji Babakhani Jafar Towfighi Khodadad Nazari Gas department Research Institute of Petroleum Industry (RIPI) Chemical engineering department Engineering FacultyUniversity of Tarbiat Modares Chemical and petrochemical department Research Institute of Petroleum Industry (RIPI)

A new complexing agent Ethylene Diamine N,N,N,N-Tetra N-Acetyl Diamine（EDTNAD）,was used for Ba0.5Sr0.5Co0.8Fe0.2O3-δ（BSCFO） *** chemicals such as ammonia,nitric acid and citric acid were eliminated in comparison to the commonly used EDTA *** agent makes complexing synthesis method a single step and causes more homogeneity in the liquid and solid *** sintering process was studied at temperatures between 1000 to 1200℃,heating-cooling rates of 1,2,5,10℃/min and dwell time of 2,5,10 and 15 ***-sintered membranes were investigated by X-ray diffraction （XRD）,scanning electron microscopy （SEM）,and density *** the SEM images and X-ray diffraction of the BSCFO disks,it could be seen that above 1100℃,crystal intensity decreased,and melting and deformation of the disk *** results show that in restricted temperature range,1000-1100℃,10% temperature increase leads to about a 4.5% density increase but a 200% increase in dwell time leads to about a 4% density *** could be concluded that the effect of temperature on grain growth,porosity and density is more than that of dwell *** also showed that the heating-cooling rate has no significant effect on grain size and density.

关键词： BSCFO Membrane Sintering Grain size Perovskite

Methane hydrate stability in the presence of water-soluble hydroxyalkyl cellulose

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Journal of Natural Gas Chemistry 2012年第2期21卷 119-125页

作者： M. Mohammad-Taheri A. Zarringhalam Moghaddam K. Nazari N. Gholipour Zanjani Chemical engineering department Tarbiat Modares University Chemistry and petrochemical Division Research Institute of Petroleum Industry

The effect of low-dosage water-soluble hydroxyethyl cellulose （approximate MW～90,000 and 250,000） as a member of hydroxyalkyl cellulosic polymer group on methane hydrate stability was investigated by monitoring hydrate dissociation at pressures greater than atmospheric pressure in a closed vessel. In particular, the influence of molecular weight and mass concentration of hydroxyethyl cellulose （HEC） was studied with respect to hydrate formation and dissociation. Methane hydrate formation was performed at 2℃ and at a pressure greater than 100 bar. Afterwards, hydrate dissociation was initiated by step heating from -10℃ at a mild pressure of 13 bar to 3℃, 0℃ and 2℃. With respect to the results obtained for methane hydrate formation/dissociation and the amount of gas uptake, we concluded that HEC 90,000 at 5000 ppm is suitable for long-term gas storage and transportation under a mild pressure of 13 bar and at temperatures below the freezing point.

关键词： hydrate stability dissociation kinetic low-dose polymer gas storage

On the potential of alyssum as an herbal fiber to improve the filtration and rheological characteristics of water-based drilling muds

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petroleum 2022年第4期8卷 509-515页

作者： Mohammad Amin Ebrahimi Ali Sanati department of petroleum engineering Amirkabir University of TechnologyTehranIran petroleum and petrochemical engineering School Hakim Sabzevari UniversitySabzevarIran

Drilling muds play an important role in drilling and production operations so that the degree of success in such operations is determined by the proper design of these *** optimize drilling operations and avoid excessive expenditure,it is essential to prepare a drilling mud that is both cheap and *** additives are typically used in drilling systems to improve these fluids'capabilities in terms of hole cleaning capacity,filtration control,viscosity,yield point,heat transfer,***,environmental concerns,cost of production,and availability are always considered challenging *** study introduces an eco-friendly herbal fiber in powder and regular forms as a potential alternative to other chemical *** do so,alyssum homolocarpum seed mucilage was added with different concentrations to the water-based drilling muds,and its rheological behavior,filtration control,and the induced formation damage were examined and the optimum concentration was *** results of this study revealed the advantages of the drilling muds formulated with alyssum in terms of filtration control,rheology,formation damage,and greenness.

关键词： Drilling fluid alyssum Herbal fiber Rheology Filtration contro

Estimation of the horizontal in-situ stress magnitude and azimuth using previous drilling data

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petroleum 2023年第3期9卷 352-363页

作者： Masoud Ziaie Mohammad Fazaelizadeh Abbas Ayatizadeh Tanha Ali Sharifzadegan department of petroleum engineering Tarbiat Modares UniversityTehranIran department of petroleum engineering Faculty of Chemical EngineeringTarbiat Modares UniversityTehranIran department of petroleum engineering Faculty of PetroleumGas and Petrochemical EngineeringPersian Gulf UniversityBushehrIran

Oil exploration and production,well stability,sand production,geothermal drilling,waste-water or CO_(2) sequestration,geohazards assessment,and EOR processes such as hydraulic fracturing,require adequate information about in-situ *** are several methods for analyzing the magnitude and direction of in-situ *** evaluation of tensile fractures and shear fractures in vertical oil and gas wellbores using image logs is one of these ***,when image logs are run in boreholes,they can be extremely costly and possibly stop the *** data for this study were gathered from seven directional wells drilled into a strike-slip fault reservoir in southern *** stress,minimum horizontal stress,pore pressure,Poisson's ratio of formations,and 233 mud loss reporting points make up the entire *** is the first time maximum horizontal stress direction has been calculated without referring to image log *** addition,the points of lost circulation were categorized into natural and induced *** results revealed that,the maximum horizontal stress direction of the reservoir was calculated at 65*** error rate is roughly 10when comparing the results of this investigation to those obtained from the image *** maximum horizontal stress direction is calculated *** terms of tensile fracture pressure,the in-situ stress ratio identifies the safest as well as the most critical inclination and azimuth for each well.

关键词： Well instability Lost circulation Drilling induced tensile fracture Image log In-situ stress Horizontal stress direction

Effect of heterogeneity and injection rates on the recovery of oil from conventional sand packs:A simulation approach

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petroleum Research 2023年第1期8卷 96-102页

作者： Anurag Pandey Himanshu Kesarwani Amit Saxena Reza Azin Shivanjali Sharma department of petroleum engineering and Geological Sciences Rajiv Gandhi Institute of Petroleum TechnologyIndia department of petroleum engineering Faculty of PetroleumGas and Petrochemical EngineeringPersian Gulf UniversityBushehrIran

The study of flow through porous media has been of cardinal gravity in oil and gas applications like enhanced oil recovery(EOR),acidizing,fracturing,*** of the most anticipated apprehensions is that the core flooding and simulation have become prevalent to understand the flow through porous *** study aims at simulating and analyzing the effect of alkaline surfactant flooding through heterogeneous permeability conditions in the lab-scale *** conventional methods of core flood deal with the effective permeability of the system without considering the effect of heterogeneity within the *** heterogeneous studies are conducted by simulating a finely meshed 2-D axisymmetric model of the sand *** novel Karanj oil surfactant extracted from Pongamia Pinnata,and partially hydrolyzed polyacryl amide polymer are considered for the physicochemical properties of displacing fluid used in the *** heterogeneity combinations and displacing fluid injection flow rates are introduced for a single absolute permeability *** indicate a trend of oil recovery upright with increasing vertical permeability.A lower areal sweep efficiency and early breakthrough are observed in models with high horizontal ***,the effect of heterogeneity on oil recovery is reduced with the increase in injection flow rates of displacing *** present work utilizes computational fluid dynamics to model multiphase flow through a heterogeneous permeability media and its effect on oil recovery.

关键词： Karanj oil Simulation Enhanced oil recovery(EOR) Heterogenous permeability ASP Flooding

Super gas wet and gas wet rock surface: State of the art evaluation through contact angle analysis

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petroleum 2023年第1期9卷 1-7页

作者： Mohammad Azadi Tabar Abolfazl Dehghan Monfared Flor Shayegh Farzad Barzegar Mohammad Hossein Ghazanfari department of Chemical and petroleum engineering Sharif University of TechnologyTehran11155-9564Iran department of petroleum engineering Faculty of PetroleumGas and Petrochemical EngineeringPersian Gulf UniversityBushehr75169-13817Iran Research Institute of petroleum Industry Tehran14665-137Iran

Recently,super gas wet and gas wet surfaces have been extensively attended in petroleum industry,as supported by the increasing number of publications in the last decade related to wettability alteration in gas condensate *** many cases,contact angle measurement has been employed to assess the wettability *** though contact angle measurement seems to be a straightforward approach,there exist many misuses of this technique and consequently misinterpretation of the corresponding *** this regard,a critical inspection of the most recent updated concepts and the intervening parameters in the contact angle based wettability evaluation of liquid-solid-gas systems could aid to provide some remediation to alleviate this *** this end,this work presents a survey on the accurate terms and rigorous protocols based on the community of surface science and *** a preliminary step,advancing,receding,static,and the most stable contact angle terminology are *** study is followed by the definition of the contact angle hysteresis *** application of surface free energy in the selection of the best gas wet agent is then ***,the impact of the size-dependent behavior of drop on contact angle is ***,a sessile drop experiment is explained to achieve the defined *** future contributions to petroleum industry journals,like this journal,this work could offer an easy use of the conceptual framework for analyzing the results and comparative evaluations in chemical wettability modifier agents.

关键词： Contact angle hysteresis Size-dependent behavior Surface free energy Stick-slip Wettability alteration Condensate reservoirs

Presenting decision tree for best mixing rules and Z-factor correlations and introducing novel correlation for binary mixtures

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petroleum 2016年第3期2卷 289-295页

作者： Mohamad Mohamadi-Baghmolaei Reza Azin Zeinab Zarei Shahriar Osfouri department of Chemical engineering Faculty of PetroleumGas and Petrochemical EngineeringPersian Gulf UniversityBushehrIran department of petroleum engineering Faculty of PetroleumGas and Petrochemical EngineeringPersian Gulf UniversityBushehrIran

The significance of gas compressibility factor in petroleum engineering encourages the researchers to employ the most accurate and precise methods for estimation of this ***,empirical correlations due to their simplicity have been referred more than other approaches for prediction of *** is no clear and reliable report to address an appropriate combination of correlation and mixing rule for each type of *** the present study,combination of several empirical correlations and mixing rules is examined and a decision tree is constructed to suggest best combination for each gas *** this reason,2329 experimental data were used for *** to the results,LelandeMueller mixing rule/Sanjari and Lay correlation is the best combination for sour and natural ***,Van NesseAbbot mixing rule/HalleYarborough correlation,StewarteBurkhardteVoo mixing rule/Heidarian correlation and SattereCampbell mixing rule/Papay correlation are the most appropriate combination for gas condensate,binary and ternary mixtures *** binary mixtures,a robust and novel empirical correlation was developed based on Kay mixing rule to estimate *** results employed how good the new correlation is in agreement with the experimental data with significant R-squared 0.9843.

关键词： Z-factor Mixing rules Empirical correlations Binary and ternary mixtures

Emulsive properties of nanometer TiO_2 ultrafine powder in oil-water system

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Chinese Science Bulletin 1997年第21期42卷 1847-1848页

作者： WANG Baohuidepartment of petrochemical engineering and Center of Analysis and Testing, Daqing petroleum Institute, Anda 151400, China department of petrochemical engineering and Center of Analysis and Testing Daqing Petroleum Institute Anda China

INVESTIGAORS recognized the role of finely divided insoluble solid particles in stabilizing oil-water emulsions in the 1920s. The work has been extensively done since the 1980s. Butthe studies only focused on particles with the parameter up to micrometer size rather than thoseof nanometer size. In this letter, emulsive properties, including the type, ability and mecha-

关键词： TiO Emulsive properties of nanometer TiO2 ultrafine powder in oil-water system

PRESSURE DISTRIBUTION ON THE WALL OF THE INNER CYLINDER RECIPROCATING AXIALLY TO THE UNSTEADY FLOW OF VISCOELASTIC FLUID IN ECCENTRIC ANNULUS

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Journal of Hydrodynamics 2006年第5期18卷 606-612页

作者： WANG Yan CUI Hai-qing YANG Yuan-jian GUO Jun-hui LI Nan department of petroleum engineering China University of Petroleum Beijing 102249 China department of petroleum engineering Daqing Petroleum Institute Daqing 163318 China

In this article, the governing equations for the unsteady flow of viscoelastic fluid in the eccentric annulus with the inner cylinder reciprocating axially and the expression of the pressure distribution on the wall of the inner cylinder of the annulus are established and derived, respectively, under the bipolar coordinate system. The equations and the expression are solved and calculated numerically using the finite difference method, respectively. The curves of the pressure distribution on the wall of the inner cylinder of the aqueous solution of Hydrolyzed Polyacrylamide （HPAM） are plotted and the influences of annular eccentricity, stroke, and stroke frequency on the pressure distribution are analyzed.

关键词： viscoelastic unsteady flow eccentric annulus fluid reciprocating axially pressure distribution