AGH DRILLING, OIL, GAS

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Przeglądanie AGH DRILLING, OIL, GAS według tematu "$CO_{2}$ sequestration"

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    The model of development of the multihorizontal, hydrocarbon reservoir using advanced exploitation methods
    (Wydawnictwa AGH, 2018) Dudek, Jacek; Janiga, Damian; Wojnarowski, Paweł
    The decreasing number of discoveries of new large hydrocarbon reservoirs as well as the significant technical progress promote the use of enhanced oil recovery methods. One of the most popular is the sequestration of carbon dioxide in matured or depleted hydrocarbon reservoirs. It allows to achieve the synergistic effect of increased crude oil production and underground sequestration of injected gas. In this paper the model of development of the multi horizontal, oil & gas field using multilateral wells technology connected with simultaneously implementation of the EOR-CO? methods was presented. Based on the performed model, ten-year productions forecasts were made, which results unambiguously confirmed the significant efficiency of the applied technological solutions with indication of the interesting prospects of their implementation in similar reservoirs.
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    Optimization of well placement and control to maximize $CO_{2}$ trapping during geologic sequestration
    (2016) Stopa, Jerzy; Janiga, Damian; Wojnarowski, Paweł; Czarnota, Robert
    The $CO_{2}$ injection into geological formations such as saline aquifers can be effective method of sequestration enabling efficient immobilization of gas by surface and capillary forces. The main objective of presented method of optimization was to determine optimal well position and injection rates that maximize residual trapping. This would mitigate the risk of the $CO_{2}$ leakage outside of storage zone. A genetic algorithm and particle swarm optimization have been developed and coupled with reservoir simulator to optimally examine various placement and injection control strategies for vertical as well as horizontal well. Optimization was carried out in 3D heterogeneous real field model with water-$CO_{2}$ -formation rock relationship. Numerical examples confirm that developed algorithm can find a promising optimal solution effectively within a partial number of simulation runs.
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    The role of capillary trapping during geologic $CO_{2}$ sequestration
    (2015) Knapik, Ewa; Janiga, Damian; Wojnarowski, Paweł; Stopa, Jerzy
    Capillary trapping is thought to be one of the primary $CO_{2}$ fixing mechanisms in a porous medium when it is stored. While $CO_{2}$ is injected, gas displaces formation water (brine) in the process called drainage. In the case of the rock mass wetted by water, formation water remains adsorbed in wall pores and micropores. Once the injection process has been completed, gas is displaced by the natural water in the process referred to as imbibition. In that way $CO_{2}$, being a non-wetting phase, is held in the form of dispersed bubbles as an immobile phase. The process occurs fast and allows for a regular storage of large amounts of $CO_{2}$. The process is dependent upon numerous parameters, including capillary pressure and contact angle, but such measurements cannot be easily taken for rock cores in reservoir conditions. Another problem is the fact that it is difficult to separate the impact of such mechanisms as dis-solution and mineral trapping. So far capillary trapping has been deeply analyzed in terms of hydrocarbon recovery and contaminant remediation. The goal of this article is to:– present a physiochemical basis of capillary trapping in CCS context,– simulate the impact of relative permeability hysteresis on geological $CO_{2}$ storage.