A Study of IOR by CO2 Injection in the Gullfaks Field, Offshore Norway

Agustsson, Hafsteinn; Grinestaff, G.H.

doi:10.2118/89338-ms

Cited by 21 publications

(7 citation statements)

References 6 publications

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“…Clearly CO 2 was not seen as a gas to be stored (for CO 2 mitigation) but as an effective gas injection fluid for EOR based on the current US experience (Stewart, 1976;Varotsis et al, 1981;Ross et al, 1981). Since then, there have been many studies for CO 2 EOR in the North Sea based on individual field cases, including Fulmar, Forties, Gullfaks, and Ekofisk fields, using advanced reservoir simulation techniques (Ren et al, 2004;Turan et al, 2002;Agustssen et al, 2004;Jensen et al, 2000;Lindeberg et al, 1994). These fields are good representatives of the North Sea oil fields, with medium to large oil reserves, various geological features and different secondary recovery factors from 38% to 60% after water flooding.…”

Section: North Sea Studiesmentioning

confidence: 99%

CO₂Eor and Storage in Oil Reservoir

Gozalpour¹,

Ren²,

Tohidi³

2005

Oil & Gas Science and Technology - Rev. IFP

311

143

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Résumé -Récupération assistée du pétrole (EOR) et stockage du CO 2 dans des réservoirs pétroliers -L'injection de CO 2 dans des réservoirs pétroliers est une méthode efficace de récupération assistée du pétrole (EOR) et est utilisée par l'industrie pétrolière depuis une quarantaine d'années. La prise en compte des émissions de gaz à effet de serre dans l'atmosphère a mené à étudier ces dernières années le potentiel de cette méthode pour stocker durablement le CO 2 . Si les conditions de réservoirs sont adéquates, elle peut permettre à la fois d'augmenter notablement la récupération d'huile et de stocker définitivement du CO 2 dans les formations géologiques. La plupart des projets passés et actuels d'EOR utilisent du CO 2 peu coûteux et ont un résultat économique appréciable (167-227 sm 3 CO 2 /STB pétrole). Le potentiel de stockage du CO 2 associé à l'EOR est important, à peu près 60 % du CO 2 injecté est retenu dans le réservoir, en ne prenant pas en compte la réinjection. Il est admis qu'il y a peu de défis technologiques majeurs à relever, cependant les contraintes économiques doivent être prises en compte pour les cas de CO 2 cher (comme par exemple celui provenant de la production d'électricité). Dans cet article, un panorama des potentiels de stockage de CO 2 associés à l'EOR est donné. Une étude de cas en mer du Nord est présentée. Abstract -CO 2 EOR and Storage in Oil Reservoirs -CO 2 injection into tertiary oil reservoirs has been widely accepted as an effective technique for enhanced oil recovery (EOR), and has been used by the oil industry for over 40 years. Concerns over greenhouse gas emissions are leading to the investigation and realisation of its potential as a carbon storage method in recent years. With the right reservoir conditions, injection of CO 2 into oil reservoirs can result in incremental oil

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Section: North Sea Studiesmentioning

confidence: 99%

CO₂Eor and Storage in Oil Reservoir

Gozalpour¹,

Ren²,

Tohidi³

2005

Oil & Gas Science and Technology - Rev. IFP

311

143

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“…The results achieved made it possible to use carbon dioxide in the fields of the USA and Canada [16,17]. Also, carbon dioxide is successfully used in Norway to increase the production of carbohydrates from productive deposits under the North Sea [18].…”

Section: Research Of Existing Solutions To the Problemmentioning

confidence: 99%

Effects of the rate of natural gas production on the recovery factor during carbon dioxide injection at the initial gas-water contact

Matkivskyi

2021

TAPR

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The object of research is gas condensate reservoirs, which is being developed under the conditions of the manifestation of the water drive of development and the negative effect of formation water on the process of natural gas production. The results of the performed theoretical and experimental studies show that a promising direction for increasing hydrocarbon recovery from fields at the final stage of development is the displacement of natural gas to producing wells by injection non-hydrocarbon gases into productive reservoirs. The final gas recovery factor according to the results of laboratory studies in the case of injection of non-hydrocarbon gases into productive reservoirs depends on the type of displacing agent and the level heterogeneity of reservoir. With the purpose update the existing technologies for the development of fields in conditions of the showing of water drive, the technology of injection carbon dioxide into productive reservoirs at the boundary of the gas-water contact was studied using a digital three-dimensional model of a gas condensate deposit. The study was carried out for various values of the rate of natural gas production. The production well rate for calculations is taken at the level of 30, 40, 50, 60, 70, 80 thousand m3/day. Based on the data obtained, it has been established that an increase in the rate of natural gas production has a positive effect on the development of a productive reservoir and leads to an increase in the gas recovery factor. Based on the results of statistical processing of the calculated data, the optimal value of the rate of natural gas production was determined when carbon dioxide is injected into the productive reservoir at the boundary of the gas-water contact is 55.93 thousand m3/day. The final gas recovery factor for the optimal natural gas production rate is 64.99 %. The results of the studies carried out indicate the technological efficiency of injecting carbon dioxide into productive reservoirs at the boundary of the gas-water contact in order to slow down the movement of formation water into productive reservoirs and increase the final gas recovery factor.

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“…Zur Berechnung der advektiven Strömungsgeschwindigkeit wird eine Erweiterung des Darcy-Gesetzes für Mehrphasenströ-mungen verwendet. Die Diffusion wird nur in der Wasserphase betrachtet, da dies den für die CO 2 4 konstitutiven Beziehungen werden zur Schließung des Gleichungssystems folgende algebraische Nebenbedingungen verwendet:…”

Section: Allgemeine Problemstellungunclassified