Oil & Gas Science and Technology

https://ogst.ifpenergiesnouvelles.fr/

List of Papers (Total 990)

A Reappraisal of Energy Supply and Demand in 2050

In this paper dealing with the medium term (2020) and long term (2050) world energy mix the author has attempted to present a single most likely scenario, contrary to the usual multiple scenario approach. A second main characteristic is that the emphasis is not on the uncertainties of energy demand but on the potential limitations on the offer of fossil fuels and mainly of oil...

Fatigue of Drillstring: State of the Art

Failure due to fatigue is a very costly problem in oil and gas industry. Many investigators have previously addressed this problem, but its frequency of occurrence is still excessive. Torque and tension can be correctly predicted but computations of fatigue duration are still approximate. Regarding the fatigue failure of drillstring, this paper summarizes the state of the art...

Analysis of Deformation Measurements for Reservoir Managemen

If reservoir deformation measurements can be analyzed to give consistent and coherent information on the volume changes and shear distortions taking place in the reservoir, data may be used for reservoir management and optimization of production and injection operations. Deformations may be measured at surface or at depth using a variety of technologies with different costs, ease...

A Preconditioned Conjugate Gradient Based Algorithm for Coupling Geomechanical-Reservoir Simulations

In this article, we introduce a new coupling algorithm between the reservoir multiphase Darcy flow simulator and the geomechanical code accounting for the compaction of the porous medium. The coupling is defined on time periods in such a way that the reservoir unknowns are computed for time steps which are small enough subdivisions of the time period whereas the mechanical...

Vector Development, Isolation of New Promoters and Enhancement of the Catalytic Activity of the Dsz Enzyme Complex in Rhodococcus Sp. Strains

Rhodococcus is a metabolically versatile genus, commonly found in soils and sea water,markedly solvent tolerant and capable of catalyzing diverse transformation reactions of compounds present in crude oil. Among these, oxidation and catabolism of alkanes and aromatics, sulfur removal from aryl- and alkyl-sulfonates and other organosulfur compounds areuseful characteristics. To...

Influence of Ageing of Polluted Soils on Bioavailability of Phenanthrene

Polycyclic aromatic hydrocarbons (PAH) are aromatic compounds persistent in the environment because of their hydrophobic nature, low water solubility and high adsorption onto soils and sediments. Bacteria can degrade phenanthrene dissolved in water but not when adsorbed onto soil particles. The bioavailability of phenanthrene for bacteria used for pollutant degradation was...

Research and Development Actions to Reduce CO2 Emissions Within the European Union

This paper describes the research actions put in place by the Directorate General of Research of the European Commission (EC) in the field of the mitigation of CO2 emissions. Global policy for climate change mitigation and the associated energy policy considerations are presented. The use of renewables and fossil fuels within the overall energy mix are discussed, leading to...

Impact of Drilling Activities in Warm Sea: Recolonization Capacities of Seabed

Due to large constraints in environmental regulations, discharge of drill cuttings at sea has to be controlled. It is therefore necessary to get basic information in order to select environment-friendly drilling fluids. The present study was intended to assess the impact of cuttings, the capacity of regeneration of the ecosystem and the processes of recolonization of seabeds. In...

Development of Natural Gas Demonstrator Based on an Urban Vehicle with a Down-Sized Turbocharged Engine

The main objective of this project is to confirm the high efficiency of compressed natural gas (CNG) fuel when used in urban conditions. For this purpose, a demonstrator vehicle using only CNG fuel has been developed when modifying an existing gasoline urban vehicle. The target is to achieve low CO2 emissions with a maximum level of 100 g/km on the motor vehicles emissions group...

Modelling Fluid-Rock Interaction Induced by the Percolation of CO2-Enriched Solutions in Core Samples: the Role of Reactive Surface Area

Understanding the fate of CO2 disposed in aquifers or depleted hydrocarbon fields is partly based on the use of reaction-transport models, able to predict the possible interaction between acidified waters and the minerals. The results delivered by such models depend on many parameters and hypotheses, of which some are still poorly constrained. A key issue is how to transpose...

Model Based Diagnostic Module for a FCC Pilot Plant

This paper presents a diagnostic module developed by IFP and tested off-line on a FCC (Fluid Catalytic Cracking) pilot plant. The method uses four successive complementary techniques. They enable to go step by step from the observations to a sentence in natural language describing the faults. First, a quantitative causal model is elaborated from a quantitative behavioural model...

In Situ EXAFS Study of the Sulfidation of an Hydrotreating Catalyst Doped with a Non Chelating Organic Additive

An industrial alumina-supported CoMoP catalyst was impregnated (incipient wetness method) with an aqueous solution of diethyleneglycolbutylether (DEGbe) and then dried at 393 K overnight. After sulfidation under H2/H2S, this catalyst has a higher activity than the non impregnated CoMoP. In order to check if the presence of such an organic additive in contact with the oxidic form...

Trace Analyses of Hydrocarbons to Understand the Fate of These Contaminants in Aquifers

In recent years, it has become increasingly evident that the problems related to soil and groundwater pollution are of major concern in industrial countries. The persistence of contamination in the environment and the toxicity of pollutants have led to important investigations and researches in this field. The competent authorities have set up regulations and methodologies to...

Méthode de préconcentration par extraction en phase solide : principe et application aux industries environnementales et pétrolières

Cet article a pour objectif de présenter les caractéristiques de l'extraction en phase solide pour les analyses environnementales à partir de matrices ou d'extraits liquides. Les principes fondamentaux qui régissent l'extraction sont expliqués afin de pouvoir choisir la nature et la quantité de phase extractante selon la matrice des échantillons et les propriétés des solutés...

Trace Analysis in the Petroleum Industry - Opening Address

In this symposium we will present and discuss the latest breakthroughs resulting from research in trace and ultra-trace analysis, in aqueous or organic media as well as in solids, throughout the chain of activities in the petroleum industry, from exploration to the use of hydrocarbons in engines.Le programme de cette rencontre vise à présenter et discuter les dernières avancées r...

Natural Gas - an Environmentally Friendly Fuel for Urban Vehicles: the Smart Demonstrator Approach

The reduction of greenhouse gases emissions remains one of the most important challenges stakes for the next decades involving all energy consumers and especially the industrial actors, although the need to make better use of energy is not appreciated to the same extent by all industrial countries. For the automotive sector, the European car manufacturersLa réduction des gaz...

Application to Petroleum Engineering of Statistical Thermodynamics – Based Equations of State

Cubic equations of state (EOS) have proven their utility to the petroleum engineers for many decades. Their predictive power remains, however, limited. Statistical mechanical approaches have meanwhile grown allowing the development of powerful engineering equations of state. In particular, this paper investigates how equations that are based on the association term of Wertheim...

DFT Study of the Interaction of a single Palladium Atom with -Alumina Surfaces: the Role of Hydroxylation

Considering the crucial role of the -alumina solid phase in heterogeneous catalysis as a support of numerous active phases, a revised and improved atomistic description of -alumina surfaces was mandatory to furnish new highlights in the field of -alumina supported catalysts. Two important scientific challenges in heterogeneous catalysis have recently been taken up by modern...

Fischer-Tropsch Synthesis: Development of a Microkinetic Model for Metal Catalysis

The construction of a single-event microkinetic (SEMK) model for metal catalysis using Fischer-Tropsch synthesis as example reaction is addressed. SEMK's describe the full product distribution with a limited number of kinetic parameters. A computer algorithm is required to generate all the elementary steps and species of the reaction network. Reacting and intermediate species are...

Structural Approaches of Polyethylene Environmental Stress-Crack Resistance

Structural Approaches of Polyethylene Environmental Stress-Crack Resistance This work was aimed at understanding and predicting of the long-term mechanical behavior of polyethylene in relation to molecular architecture. An insight into the semi-crystalline microstructure and the chain topology consisting of intercrystalline tie chains and loose folding loops was the main...

Development of Methods for Gaseous Phase Geochemical Monitoring on the Surface and in the Intermediate Overburden Strata of Geological CO2 Storage Sites

The developments and results presented in this paper are taken from the work carried out as part of the GeoCarbon-Monitoring project, which was partly funded by the French National Research Agency (ANR). An important part of this project covers methods for gas monitoring on the surface as well as within the cap rock of geological CO2 storage sites. The work undertaken by INERIS...

First Modelling Results of the EM Response of a CO2 Storage in the Paris Basin

We study the feasibility of using electrical/EM methods for monitoring the injection of supercritical CO2 at a depth of 1700 m in a saline aquifer of the Paris Basin (Dogger carbonates). We first establish the theoretical interest of resistivity methods for CO2 monitoring through the basic laws of electrical physics in porous sedimentary rocks, assuming that supercritical CO2 is...

ATES Contribution to the Housing Energy Balance: a Simple Assessment Methodology

The reduction of Green-House Gas Emissions (GHGE) goes through a sum of solutions that need to be tuned to the local context in terms of energy needs and resources, and also to the demand and offer variations with time. The housing heat consumption is particularly concerned as it is seasonal and rarely in phase with the deliverability of alternative or renewable energy sources...

Reduction of Single Event Kinetic Models by Rigorous Relumping: Application to Catalytic Reforming

Modeling of refining processes using metal-acid bifunctional catalysts involves an exponentially increasing number of species and reactions, which may rapidly exceed several thousands for complex industrial feedstocks. When building a model for such a process, a priori lumped kinetic models by chemical family do no longer meet the current requirements in terms of simulation...