In this paper, we investigate an efficient implicit scheme for the numerical simulation of chemical enhanced oil recovery technique for oil fields. For the sake of brevity, we only focus on flows with polymer to describe the physical and numerical models. In this framework, we consider a black oil model upgraded with the polymer modeling. We assume the polymer only transported in...

In this paper, a comparison of the biofuels barrier properties of PolyAmide 6 (PA6) and High Density PolyEthylene (HDPE) is presented. Model fuels were prepared as mixtures of toluene, isooctane and ethanol, the ethanol volume fraction varying between 0% and 100%. Barrier properties were determined at 40°C by gravimetric techniques or gas chromatography measurements, and it was...

This paper focuses on the influence of the crude oil characterization on minimum miscibility pressure (MMP) calculation. It is shown what kind of compounds may be lumped together in order to calculate the MMP with a good accuracy. In a first step, a selected crude oil is modeled with 37 pure compounds using the characterization procedure developed by Avaullée et al. (1997a) in...

Valid samples are essential to the proper description of reservoir fluids; if the samples are not representative, all measurements on them will be invalid. This paper discusses the principal challenges facing fluid sampling including gas condensate reservoirs, compositional gradients, water content of hydrocarbon fluids, asphaltene deposition, wax formation, oil base mud...

The flow of several components and several phases through a porous medium is generally described by introducing macroscopic mass-balance equations under the form of generalized dispersion equations. This model raises several questions that are discussed in this paper on the basis of results obtained from the volume averaging method, coupled with pore-scale simulations of the...

La production froide de certains réservoirs contenant des huiles visqueuses, au Canada et au Venezuela principalement, amène à des productivités et des taux de récupération supérieurs aux prédictions calculées à l'aide des équations habituellement utilisées pour décrire les écoulements classiques. Pour expliquer ces productions anormalement élevées, un certain nombre de m...

3D basin modelling is now used by some oil companies for exploration purposes. The potentiality of this tool is not fully expressed but it seems that it should become the core of the basin evaluation process in a close future. In this paper, a 3D tool and the methodology of 3D basin modelling in a relatively mature area are presented. The methodology is based on a four-step...

The Residence-Time Distribution (RTD) is a chemical engineering concept introduced by Danckwerts in 1953. It has been described in a multitude of scientific papers and applied for various industrial processes. The development of Computer Fluid Dynamics will improve the comprehension and optimisation of such processes. However, this approach remains difficult in case of complex...

In this work, we focus on the experiments of permeation in order to characterise the transport coefficients and how they depend on the gas concentration. First, a physical and mathematical modelling approach is presented. Two models are used in order to describe the diffusion of gases in polymers. The mathematical modelling leads thereafter to the construction of an unusual...

Les interactions entre le vieillissement humide de composites unidirectionnels verre/époxy et leur tenue en fatigue par flexion sont ici abordées dans le cadre d'un modèle de durabilité fondé sur des notions de corrosion sous contrainte. L'étude est focalisée sur les stades initiaux de l'endommagement par fatigue, qui sont caractérisés par l'accumulation diffuse, à l'échelle...

This paper deals with stress and displacement calculation in dynamically bent unbounded flexible pipes. The presented method is original in that movements and stresses of all helical layers are coupled. Good correlation between strain measurements and the theory has been found, and is shown in the paper.Cet article présente une méthode de détermination des contraintes et des d...

The conditions prevailing at the wall, or in the neighborhood of a borehole, often influence the selected development scheme of a field, as well as the completion procedures used for each well. The stress concentrations generated by the drilling operation are not only a function of the geometry of the borehole, the magnitude and orientation of the in situ stresses and the...

Boutéca, M.J., Sarda, J.P. and Schneider, F. (1996) Subsidence Induced by the Production of Fluids. Revue de l'Institut français du pétrole, 51, 3, 349-379 Abstract - Subsidence Delay: Field Observations and Analysis - The objective of this paper is to describe the subsidence-depletion delay from field observations with the aim to explain its cause and constrain its modelling...

By the year 2020 or so, oil and gas, which contribute currently to 62% of the whole of carbon dioxide anthropogenic emissions, will go on to cover roughly half of the world demand of primary energy. Thence, the fight against the CO2 emissions requires the implementation of preventive actions as regards processing (refining of crude oil and natural gas) and uses (combustion in...

We performed a genotypic characterization of new sulfur selective dibenzothiophene (DBT) desulfurizing strains which have been isolated from hydrocarbon contaminated soils originating from Mexican refineries. We compared them to two reference strains (strains Rhodococcus erythropolis IGTS8 and R. erythropolis X309). These reference strains have been extensively studied and are...

Fuels are major organic pollutants of soils and ground waters. Persistency of pollutants in the environment depends on the intrinsic biodegradability of constituting hydrocarbons of fuels, on the presence of active microflorae at the polluted areas and on local environmental factors. The intrinsic biodegradability of fuels such as gasoline or diesel oil was determined by using a...

A new method for normalization of capillary pressure data of a reservoir was developed that incorporates the effects of pore geometry (pore size distribution index and flow zone indicator index), lithology index and irreducible water saturation. The hydraulic flow unit's approach was used to classify the reservoir formation into constant pore geometry units. The Leverett J...

This paper summarizes the main results of an integrated study using surface and subsurface geological data and IFP's basin modeling tools along a regional transect crossing the Alberta foothills and adjacent foreland between Banff and Calgary. Cretaceous subsidence history in the foreland and subsequent erosional profiles in both the autochthon and the allochthon were computed...

The problem of hydrate blockage of pipelines in offshore production is becoming more and more severe with the increase of the water depth. Conventional prevention techniques like insulation or methanol injection are reaching their limits. Injection of antiagglomerant additives and/or presence of natural surfactants in crude oils give us a new insight into hydrate prevention...

Heavy oil is accessible in different areas around the world in large amount. Unfortunately its high viscosity makes it difficult to produce and to transport. In this article we focus on transport problems. Pressure drop in the pipes must be lower as possible to limit pump power and to be able to transport in long distance. In the case of heavy oil, the high viscosity leads to...

Neutron scattering techniques can be used to study the different motions of molecules adsorbed in zeolites: vibrations, rotations and translation. Using combined instruments, it is now possible to measure diffusivities ranging from 10-7 to 10-14 m2s-1. Furthermore, incoherent scattering, using hydrogenated molecules, allows to determine the self-diffusivity; while coherent...

In sandstones, siliceous diagenetic overgrowths may commonly contain several generations of hydrocarbon fluid inclusions (FI's), generally of size no more than 10 µ. We successfully analyzed such inclusions in North sea sandstones from the Dunbar area, subthrusted reservoirs such as sub-Andean basins (Venezuelian and Colombian foothills) and carbonaceous series in areas of...

Synchrotron microtomography is a non-destructive 3D-characterisation technique providing a three-dimensional mapping of µ, the linear X-ray absorption coefficient of the material under investigation. At each voxel (volume element in 3D images, by analogy to pixel, picture element in 2D) the value of µ is the average of the absorption coefficients of the different solids and...