Oil & Gas Science and Technology

https://ogst.ifpenergiesnouvelles.fr/

List of Papers (Total 990)

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...

Oxygen Carriers for Chemical Looping Combustion - 4 000 h of Operational Experience

Chemical Looping Combustion (CLC) is a new combustion technology with inherent separation of the greenhouse gas CO2. The technology involves the use of a metal oxide as an oxygen carrier which transfers oxygen from combustion air to the fuel, and hence a direct contact between air and fuel is avoided. Two interconnected fluidized beds, a fuel reactor and an air reactor, are used...

Experimental Investigation of the Asphaltene Deposition Process during Different Production Schemes

This paper presents the results of asphaltene precipitation and deposition during lean gas injection, CO2 injection and natural depletion in reservoir conditions. In addition, the effect of variations in operating pressure, injection gas concentration and production rate on asphaltene precipitation and deposition were investigated. The severity of asphaltene deposition was found...

Fault Permeability and Strength Evolution Related to Fracturing and Healing Episodic Processes (Years to Millennia): the Role of Pressure Solution

It is well known that fluids flow through faults and fractures but it is also demonstrated that fault zones act as impermeable barriers. Consequently, one must consider that faults are successively open and closed paths for fluids. On the human-activity time scale (years to millennia), studies of the seismic cycle offer the possibility of making a model of such evolution...

Reconstruction of Petroleum Feedstocks by Entropy Maximization. Application to FCC Gasolines

In the petroleum industry, the oil fractions are usually complex mixtures containing several hundreds up to several millions of different chemical species. For this reason, even the most powerful analytical tools do not allow to separate and to identify all the species that are present. Hence, petroleum fractions are currently characterized either by using average macroscopic...

Diesel Lean NOx-Trap Thermal Aging and Performance Evolution Characterization

The work described in this paper focuses on the impact of thermal aging on NOx trap structure and functions. They were evaluated on a Synthetic Gas Bench (SGB) and correlated with the analysis of the structural and chemical evolution of the catalyst. A FTIR Operando study allowed to further analyse the mechanisms occurring on the catalyst surface and highlight the most critical...

Analytical Solutions and Optimization of the Exo-Irreversible Schmidt Cycle with Imperfect Regeneration for the 3 Classical Types of Stirling Engine

The “old” Stirling engine is one of the most promising multi-heat source engines for the future. Simple and realistic basic models are useful to aid in optimizing a preliminary engine configuration. In addition to new proper analytical solutions for regeneration that dramatically reduce computing time, this study of the Schmidt-Stirling engine cycle is carried out from an...

Surface and Subsurface Geochemical Monitoring of an EOR-CO2 Field: Buracica, Brazil

This paper presents a surface and subsurface geochemical survey of the Buracica EOR-CO2 field onshore Brazil. We adopted a methodology coupling the stable isotopes of carbon with noble gases to investigate the adequacy of geochemical monitoring to track deep fluid leakage at the surface. Three campaigns of CO2 flux and concentration in soils were performed to understand the CO2...

Experimental Verification of the Petroelastic Model in the Laboratory – Fluid Substitution and Pressure Effects

The poroelastic model is a major component in the workflows for the interpretation of time-lapse (or 4D) seismic data in terms of fluid repartition and/or pressure variation during the exploitation of reservoirs. This model must take into account both the fluid substitution effect and the pressure variation effect on the measured seismic parameters (velocities, impedance). This...

History Matching of Production and 4D Seismic Data: Application to the Girassol Field, Offshore Angola

Time-lapse seismic provides a source of valuable information about the evolution in space and time of the distribution of hydrocarbons inside reservoirs. Seismic monitoring improves our understanding of production mechanisms and makes it possible to optimize the recovery of hydrocarbons. Although 4D seismic data are increasingly used by oil companies, they are often qualitative...

Advanced Integrated Workflows for Incorporating Both Production and 4D Seismic-Related Data into Reservoir Models

Reservoir models are used for predicting future oil recovery or for evaluating alternative field management scenarios. They can be considered as reliable when they account for all available data collected on the field: data are split into static data such as logs or measurements carried out on cores extracted from wells and dynamic data such as pressures and flow rates. Since the...

Geology and Petroleum Systems of the Offshore Benin Basin (Benin)

This paper summarizes the tectonosedimentary development and petroleum system of the Offshore Benin Basin (OBB). In accordance with structural development, the stratigraphic succession of this basin was divided into 4 sequences: pre-rift (up to Late Jurassic); rift (Neocomian to Lower Cretaceous); transitional (Cenomanian to Santonian) and post-rift (Maastrichtian-Holocene...

Compositional Description of Three-Phase Flow Model in a Gas-Lifted Well with High Water-Cut

Gas-lift technique is part of a long-term production sustainability solution in oil fields amid increasing water cuts and depleting reservoir energy. A three-phase compositional model describing the continuous gas-lift process for an operational oilfield experiencing high water-cut is developed. Field data with different water-cut values was considered to compare a three-phase...

Improving Molecular Simulation Models of Adsorption in Porous Materials: Interdependence between Domains

Fluid confinement is ubiquitous in nature and industry, and is the most widely used technique to characterize porous materials. The main characterization tool consists in measuring the so-called adsorption/desorption isotherms, i.e. the amount of gas adsorbed by the porous substrate as a function of the fluid chemical potential (or relative pressure). The models used to analyse...

Isotherms of Fluids in Native and Defective Zeolite and Alumino-Phosphate Crystals: Monte-Carlo Simulations with “On-the-Fly” ab initio Electrostatic Potential

We use periodic Density Functional Theory (DFT) method to generate the electrostatic potentials of adsorption materials and use them in Grand Canonical Monte Carlo simulations of fluid adsorption isotherms. This permits us to consider complex solids showing defects and without a priori knowledge of their electrostatic parameters for the Monte Carlo simulations. We apply the...

Influence of the Periodic Boundary Conditions on the Fluid Structure and on the Thermodynamic Properties Computed from the Molecular Simulations

The components of pair distribution function in different directions with respect to the coordinate system defined by the simulation box are determined for Lennard-Jones fluid simulated using the Monte Carlo technique in cubic boxes of various size. The approach of Pratt and Haan is employed to analyze the distortion of isotropic fluid structure due to the periodic boundary...

Development of Asymmetric Hydrogenation Catalysts via High Throughput Experimentation

The dynamics of drugs discovery imposes severe time constraints on the development chemist in charge of implementing the large scale production of a new Active Pharmaceutical Ingredient (API). This results in the use of well-established and robust transformations at the expense of the cost-efficiency and the sustainability of the process. In order to cope with the short...

High Throughput Approach Applied to VOC Oxidation at Low Temperature

A High Throughput (HT) approach is used to prepare and characterize the catalytic activity of materials for the destruction of Volatile Organic Compounds (VOC) at low temperature. The interest of the Designs of Experiments (DoE) in the primary screening is demonstrated through modeling catalysts composition according to the light-off temperature detected by infrared thermography...

Integration of an Informatics System in a High Throughput Experimentation. Description of a Global Framework Illustrated Through Several Examples

High Throughput Experimentation (HTE) is a rapidly expanding field. However, the productivity gains obtained via the synthesis or parallel testing of catalysts may be lost due to poor data management (numerous manual inputs, information difficult to access, etc.). A global framework has then been developed. It includes the HTE pilot plants in the global information system. It...

Bubbles in Non-Newtonian Fluids: A Multiscale Modeling

In this paper, the concept of a multiscale modeling approach is highlighted with which physical phenomena at different scales can be studied. The work reports a multiscale approach to describe the dynamics of a chain of bubbles rising in non-Newtonian fluids. By means of the Particle Image Velocimetry (PIV) and the Lattice Boltzmann (LB) simulation, a deep understanding of the...

Experimental Study and Mathematical Modeling of Asphaltene Deposition Mechanism in Core Samples

In this work, experimental studies were conducted to determine the effect of asphaltene deposition on the permeability reduction and porosity reduction of carbonate, sandstone and dolomite rock samples using an Iranian bottom hole live oil sample which is close to reservoir conditions, whereas in the majority of previous work, a mixture of recombined oil (a mixture of dead oil...

Predicting CO2 Minimum Miscibility Pressure (MMP) Using Alternating Conditional Expectation (ACE) Algorithm

Miscible gas injection is one of the most important enhanced oil recovery (EOR) approaches for increasing oil recovery. Due to the massive cost associated with this approach a high degree of accuracy is required for predicting the outcome of the process. Such accuracy includes, the preliminary screening parameters for gas miscible displacement; the “Minimum Miscibility Pressure...

Dynamic Gelation of HPAM/Cr(III) under Shear in an Agitator and Porous Media

Water shutoff and profile control is one of the most important technologies to enhance oil recovery. To ensure the success of this technology, the key is to accurately determine gelation time and gel strength during gel flow in porous media. The HPAM (Hydrolyzed PolyAcrylaMide) system and redox system (sodium bichromate and sodium sulfite) is widely used, whose static gelation...