Laboratory Studies for Light Oil Air Injection Projects : Potential Application in Handil Field

Clara, Cedric Pierre Raymond; Durandeau, Marc; Quenault, Gerard; Nguyen, Tuyet-Hang

doi:10.2118/54377-ms

Cited by 17 publications

(5 citation statements)

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“…In this work, the numerical modeling of kinetic reactions, particularly the LTO reactions, is based on oxygenated compounds (aldehydes, alcohols, and ketones) as proposed earlier by different researchers. − In fact, two of the reaction models proposed by Khansari et al were used in the modeling of the oxygenated compounds generated at two different ranges of temperatures. However, the stoichiometric coefficients were modified to obtain balanced stoichiometric equations according to the characteristics of heavy oil used in experiments.temperature range of 50–150 °C temperature range of 150–200 °C Recall that experimental studies were conducted at 75, 150, and 200 °C and that reaction models for higher temperatures are not considered (the proposed approach in this work is not high-temperature oxidation reactions).…”

Section: Numerical Simulationmentioning

confidence: 99%

Optimal Design of Low-Temperature Air Injection with Propane for Efficient Recovery of Heavy Oil in Deep Naturally Fractured Reservoirs: Experimental and Numerical Approach

Mayorquin-Ruiz

Babadagli

2016

Energy Fuels

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Low-temperature air/solvent injection (LTASI) can be a possibility if injected air/solvent into a fractured reservoir diffuses into the matrix effectively to oxidize oil in it while reducing its viscosity by temperature and solvent dissolution. However, early breakthrough of air with partial consumption of oxygen as a result of the highly conductive nature of the reservoirs is a concern. Once it is controlled by a proper injection scheme and consumption of air injected through efficient diffusion into the matrix, low-temperature air injection (LTAI) can be an alternative technique for heavy-oil recovery from deep naturally fractured reservoirs (NFRs). Limited number of studies on light oils showed that this process was highly dependent upon the oxygen diffusion coefficient and matrix permeability. In this process, oil production is governed by drainage and stripping of light oil components, which have a greater effect on recovery than the swelling of oil. In the present study, static laboratory tests were performed that complement previously published experimental data, by immersing heavy-oil-saturated porous media into air-filled reactors to determine critical parameters on recovery, such as the diffusion coefficient. A data acquisition system was established for continuous monitoring of the pressure at different temperatures. Also analyzed was the possibility of hydrocarbon gas additive to air, minimizing the oil viscosity increase created by oxidation reactions. On the basis of core-scale experimental results, a numerical simulation model of air diffusion into a single matrix was created to obtain the diffusion coefficient through matching of laboratory results. Then, sensitivity runs were performed for different matrix sizes and composition of injected gas (air and hydrocarbon). Additionally, a scaling-up study was performed to obtain an approximate production time for different matrix block sizes and temperatures. It is imperative that enough timing is required for the diffusion process before injected air filling to fracture network breakthrough. This implies that huff-and-puff-type injection is an option as opposed to continuous injection of air. The optimal design and duration of the cycles were also tested experimentally and numerically for a single matrix case.

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Section: Numerical Simulationmentioning

confidence: 99%

Optimal Design of Low-Temperature Air Injection with Propane for Efficient Recovery of Heavy Oil in Deep Naturally Fractured Reservoirs: Experimental and Numerical Approach

Mayorquin-Ruiz

Babadagli

2016

Energy Fuels

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“…Different approaches for LTO reaction modeling such as SARA fractions [2,28,25] and oxygenated compounds [20,30,7,23,13,14] were reported. The LTO reaction model proposed in this work is based on oxygenated compounds and taken from Khansari et al [14] even though the stoichiometric coefficients are not the same due to differences in oil characteristics.…”

Section: Kinetic Reactionmentioning

confidence: 99%

Field scale numerical modeling of low temperature air injection with propane for heavy-oil recovery from naturally fractured reservoirs

Mayorquin-Ruiz

Babadagli

Garza

2015

Fuel

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“…High-pressure air injection (HPAI) is a common enhanced oil recovery (EOR) method in immiscible flow conditions [3,4]. Traditionally used in the recovery of heavy oils [5,6,7], this technique was extended to the recovery of light oils in the past decades [8,9,10,11]. In the latter case, thermal expansion and gas drive promoted by the oxidation reaction are responsible for enhancing recovery in immiscible flows.…”

Section: Introductionmentioning

confidence: 99%

Reactive miscible displacement of light oil in porous media

Kokubun,

Gargar,

Marchesin

et al. 2020

Preprint

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We develop a theory for the problem of high pressure air injection into deep reservoirs containing light oil. Under these conditions, the injected fluid (oxygen + inert components) is completely miscible with the oil in the reservoir. Moreover, exothermic reactions between dissolved oxygen and oil are possible. We use Koval's model to account for the miscibility of the components, such that the fractional-flow functions resemble the ones from Buckley-Leverett flow. This allows to decompose the solution of this problem into a series of waves. We then proceed to obtain full analytical solutions in each wave. Of particular interest is the case where the combustion wave presents a singularity in its internal wave profile. Evaluation of the variables of the problem at the singular point determines the macroscopic parameters of the wave, i.e., combustion temperature, wave speed and downstream oil fraction. The waves structure was observed previously for reactive immiscible displacement and we describe it here for the first time for reactive miscible displacement of oil. We validate the developed theory using numerical simulations.

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Laboratory Studies for Light Oil Air Injection Projects : Potential Application in Handil Field

Abstract: This paper was prepared for presentation at the 1999 SPE Asia Pacific Oil and Gas Conference and Exhibition held in Jakarta, Indonesia, 20–22 April 1999.

Cited by 17 publications

References 0 publications

Optimal Design of Low-Temperature Air Injection with Propane for Efficient Recovery of Heavy Oil in Deep Naturally Fractured Reservoirs: Experimental and Numerical Approach

Optimal Design of Low-Temperature Air Injection with Propane for Efficient Recovery of Heavy Oil in Deep Naturally Fractured Reservoirs: Experimental and Numerical Approach

Field scale numerical modeling of low temperature air injection with propane for heavy-oil recovery from naturally fractured reservoirs

Reactive miscible displacement of light oil in porous media

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