Studies on the Stability of the Foamy Oil in Developing Heavy Oil Reservoirs

Busahmin, Bashir; Maini, Brij B.; Karri, Rama Rao; Sabet, Maziyar

doi:10.4028/www.scientific.net/ddf.371.111

Cited by 32 publications

(18 citation statements)

References 15 publications

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“…The addition of carbon‐based nanofillers upgrades the mechanical properties of LDPE. The high‐level aspect ratio of nanofillers and powerful interaction at the boundary of filler‐LDPE are the two important elements essential to improving the mechanical operation of LDPE‐nanocomposites . Figures shows the mechanical properties of LDPE and LDPE‐nanocomposite such as strain–stress, storage modulus temperature, storage modulus‐nanofillers and loss modulus‐frequency.…”

Section: Resultsmentioning

confidence: 99%

“…Chemical structure of Gr is a flat and two‐dimensional geometry structure, therefore; strengthening the effectiveness of Gr is better‐quality than similar CNTs samples . There are some rationalizations for these significant different performances; first reason, Grs are homogeneously distributed within LDPE as shown by SEM, while some aggregates were made in LDPE/CNTs; second reason, the two‐dimensional geometry of Gr direct to improve mechanical adhesion at Gr‐LDPE interface; third reason, Gr has a larger aspect ratio compared with LDPE/CNTs and results better interfacial stress transfer between nanofillers and LDPE in LDPE/Grs compounds .…”

Section: Resultsmentioning

confidence: 99%

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Effect of Graphene and Carbon Nanotube on Low‐Density Polyethylene Nanocomposites

Sabet

Soleimani

Mohammadian³

2018

Vinyl Additive Technology

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The nanocomposites of low-density polyethylene contain graphene (LDPE/Gr) and low-density polyethylene contains carbon-nanotubes (LDPE/CNTs) with different Gr loadings (0.5, 1, and 3 wt%) were formulated with a melt-mixing method. The distribution of Grs in LDPE was detected by scanning electron microscopy. In this study, morphological, electrical, thermal, tensile, and rheological properties of nanocomposites were comparatively investigated. The outcomes were reviewed and it was recognized that LDPE/Gr nanocomposites reveal superior properties than LDPE/CNTs nanocomposites at the same loadings. The superior performance of LDPE/Gr nanocomposites attributes to the large aspect ratio of Gr and its two dimensional flat surfaces which effect in increasing physical interlinking with LDPE chains and expanded the interface zone at filler-LDPE interface. It was also identified that the achieved results for LDPE/CNT nanocomposites, which has a compact surface area and linkage with LDPE, are less noticeable than similar Gr compounds due to higher interfacial interactions between Gr and LDPE. The thermomechanical results of LDPE/Gr nanocomposites have been studied and the influence of nanoscaled strengthening in the thermoplastic matrix has been investigated. The existence of Gr limits the flexibility of LDPE chains, increases the rigidity and the strength of the LDPE-nanocomposites. This study compares how a flat or roll structure of carbon nanostructure additive (Grs vs. CNTs) can change the various properties of LDPE nanocomposites. J. VINYL ADDIT. TECHNOL., 00:000-000, 2018.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Effect of Graphene and Carbon Nanotube on Low‐Density Polyethylene Nanocomposites

Sabet

Soleimani

Mohammadian³

2018

Vinyl Additive Technology

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“…Flue-gas foam reduces the mobility of gas phase by increasing the gas viscosity. 39 Gas phase contains four components, that is, N 2 , CO 2 , N 2 foam, and CO 2 foam. The apparent viscosity of gas phase is calculated from the viscosity and molar concentration of each component as shown in Equation (1).…”

Section: Chemical Reaction Foam Modelmentioning

confidence: 99%

Application of flue‐gas foam in thermal‐chemical flooding for medium‐depth heavy oil reservoirs

Líu

et al. 2019

Energy Science & Engineering

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Heat loss in wellbore during steam injection is considerable due to the deep burial of medium‐depth heavy oil reservoirs, leading to a low steam quality in the bottom of well. As for hot water flooding, the mobility ratio between oil and water is small, which decreases oil recovery. Flue‐gas foam assisted thermal‐chemical flooding is a new method for heavy oil reservoir. Compared to hot water flooding, flue‐gas foam assisted thermal‐chemical flooding can decrease oil viscosity, achieving higher sweep efficiency. However, the combined mechanisms of all the injected components have not been studied systematically. In this work, the role of CO2, viscosity reducer and hot water for oil viscosity reduction and distribution characteristics of residual oil were studied using the numerical simulation methods. Results show that although the percentage of viscosity reduction contribution of viscosity reducer can be as high as 60%, only wider range of this effect can help recover more remaining oil effectively. In the presence of flue‐gas foam, CO2 and viscosity reducer can decrease oil viscosity in the upper and bottom layers of the reservoir, respectively. Two parameters of the area proportion of removed‐oil (ARRO) and the average removed‐oil saturation (SDRO) are defined. It is believed that both ARRO and SDRO are quite small for the hot water flooding, which is assisted by viscosity reducer. The flue‐gas foam can obviously expand the area of removed‐oil, but the average removed‐oil saturation is slightly lower. The combination of flue‐gas foam and viscosity reducer is a promising displacement method.

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“…The live oil viscosities along with other fluid properties are presented in table 1. The solution gas oil ratio (SGOR) of methane saturated mineral oil and methane saturated crude oil were found to be 10 (cm 3 …”

Section: Determination Of Fluid Propertiesmentioning

confidence: 99%

“…Much of the engineering aspects that is involved in the development and exploration of reservoirs worldwide depends on physical properties of fluid especially compressibilityand density of heavy oil. The recent studies analysed oil recovery behaviour of crude oil and the mineral oil under solution gas drive under different depletion rates and compressibility [3] . These studies reported that the compressibility of the oil and gas dispersion is higher than that of oil containing dissolved gas.…”

Section: Introductionmentioning

confidence: 99%

Influence of Compressibility on Heavy/FoamyOil Flow

Busahmin¹,

Maini²,

Hasan³

2017

IOSR JEN

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-Based on American petroleum institute heavy oil iscategorized to have 10 and 20-degreegravity and a viscosity of thousands of centi-poises that flow under solution gas driveas the mean driving mechanism. thatensues in pressure decline experiments by way of investigationin many laboratory tests worldwide. It is alsobelieved to be avital recovery mechanism in some heavy oil reservoirs in the world, which have revealed more performance in recovery factors when it was compared to Darcy flow behaviour, however Darcy deals with single flow behaviour. Many scholars had investigated heavy oil properties for the past decades, and attempted to explain them. This article shows one of the most significant properties for heavy oil flow which is the compressibility. foamy oil or heavy oil has different properties, such as low production gas oil ratio, high oil viscosity, high daily production rate and high primary recovery factor. The compressibility of the foam turns out to be one of the predominant factor that directs the foamy oil phenomenon. To enumerate the focalaspects affecting the compressibility of the heavy oil, dead oil compressibility for both refined mineral oil and crude oil were measured using the densitometer Paar DMA 45, and then the compressibility of the live oil was measured using the same set-up with the same technique as for the dead oil. Foamy oil is more compressible than conventional solution gas because of the tiny gas bubbles that are diffused in the oil; thus, the oil formation volume factor is much higher than the conventional oil. The experimental results show that at different saturation pressures and room temperature, the trends fit the expected behaviour above the saturation pressures. In addition, the measurements of the live oil compressibility were also attempted below the saturation pressures. It was concluded that the oil viscosity is more dominant factor than compressibility compared to the presence or absence of asphaltenes and other highly polar oil components.

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Studies on the Stability of the Foamy Oil in Developing Heavy Oil Reservoirs

Cited by 32 publications

References 15 publications

Effect of Graphene and Carbon Nanotube on Low‐Density Polyethylene Nanocomposites

Effect of Graphene and Carbon Nanotube on Low‐Density Polyethylene Nanocomposites

Application of flue‐gas foam in thermal‐chemical flooding for medium‐depth heavy oil reservoirs

Influence of Compressibility on Heavy/FoamyOil Flow

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