Tertiary Recovery Potential of CO2 Flooding in Joffre Viking Pool, Alberta

Ko, Stephen C.; Stanton, P.M.; Stephenson, D.J.

doi:10.2118/85-01-01

Cited by 15 publications

(7 citation statements)

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“…For example, the Weyburn reservoir oil has gravities that range from 25 to 33˚ API, and MMPs that vary accordingly from 14.5 to 11.5 MPa (34) . The Joffre Viking oil has a gravity of 42˚ API, with a correspondingly lower MMP of approximately 10.3 MPa (35) . In the absence of specific reservoir information, the MMP can be estimated on the basis of oil gravity and reservoir temperature (18) 52…”

Section: Technical Screening Of Oil Reservoirs For Eormentioning

confidence: 99%

Screening, Evaluation, and Ranking of Oil Reservoirs Suitable for CO2-Flood EOR and Carbon Dioxide Sequestration

Shaw

Bachu

2002

Journal of Canadian Petroleum Technology

174

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Geological sequestration of CO2 in EOR operations has been recognized as one of the more viable means of reducing emissions of anthropogenic CO2 into the atmosphere in response to global climate change. This option, which lowers the cost of CO2 sequestration by recovering incremental oil, is particularly attractive in mature sedimentary basins, such as the Western Canada Sedimentary Basin where many oil pools are near depletion, and where most of the needed infrastructure is already in place. A method was developed for the rapid screening and ranking of oil reservoirs suited for CO2-flood EOR, which is particularly fit for a very large number of reservoirs as listed in eserves databases, and which does not require detailed reservoir engineering analysis. Oil reservoirs are screened on the basis of oil gravity, reservoir temperature and pressure, minimum miscibility pressure and remaining oil saturation, to determine their suitability for CO2 flooding, and an analytical method is used to calculate the incremental oil recovery at breakthrough and for any hydrocarbon pore volume (HCPV) fraction of injected CO2. In addition, the reservoir capacity for CO2 sequestration is calculated. eservoirs are ranked according to a set of criteria with corresponding assigned weights to identify and select the best-suited reservoirs for CO2 flooding and sequestration. The method was applied to 8,637 oil reservoirs listed in the 2000 Alberta reserves database. Of these, 4,470 passed the screening criteria and were ranked based on technical and performance characteristics. Preliminary calculations predict that 150 × 106, 422 × 106, or 558 × 106 m3, of additional oil could be produced from Alberta's reservoirs at breakthrough, and at 50% and 100% HCPVof injected CO2, respectively; meanwhile sequestering 127, 591 and 1,118 Mt CO2, respectively. Thus, geological sequestration of CO2 in Alberta oil reservoirs suitable for CO2 flooding could provide a means for significantly reducing anthropogenic CO2 emissions from major point sources while, at the same time, realizing an economic benefit. Introduction As a result of anthropogenic CO2 emissions, atmospheric concentrations of CO2 have risen significantly from pre-industrial levels, primarily as a consequence of fossil-fuel combustion for energy production. Circumstantial evidence suggests that the increase in greenhouse-gas concentrations in the atmosphere leads to climate warming and weather changes(1). In response to the need to avoid irreversible climate changes and the associated risks resulting from greenhouse effects, most of the developed world, including Canada, has committed to reduce by 2012 the release into the atmosphere of anthropogenic CO2 to levels below those of 1990. However, although the intensity of CO2 emissions has markedly decreased, Canada's emissions have increased steadily since 1990 as a result of economic development. Given the inherent advantages, such as large resources, availability, ease of transport and storage, and competitive cost, fossil fuels, which currently provide about 75% of the world's energy, will likely remain as a major component of the world's energy supply for at least this century(1, 2). In light of this, producing regions, such as Western Canada, need to find ways to both increase oil production and reduce CO2 emissions.

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Section: Technical Screening Of Oil Reservoirs For Eormentioning

confidence: 99%

Screening, Evaluation, and Ranking of Oil Reservoirs Suitable for CO2-Flood EOR and Carbon Dioxide Sequestration

Shaw

Bachu

2002

Journal of Canadian Petroleum Technology

174

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“…Asphaltenes usually contain heteroatoms (such as N, O, and S) and metals (such as V, Ni, and Fe) in their structures (Qin et.al, 2000). Different studies show that CO2 can a displacing solvent in the reservoir formations (Aycaguer et al, 2001, Holm and Josendal, 1974, Brock and Bryan, 1989, Ko et al, 1985. In CO 2 or hydrocarbon flooding, the asphaltene to resin ratio of crude oil is altered, causing asphaltene precipitation and thereby its deposition.…”

Section: Introductionmentioning

confidence: 99%

A Comparison of Asphaltene Deposition in Miscible and Immiscible Carbon Dioxide Flooding in Porous Media

2014

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Carbon dioxide injection is used for tertiary oil recovery and can recover significant amount of residual oil. CO 2 injection has been used successfully as an enhanced oil recovery (EOR) method for several decades. Recently, CO 2 flooding method has gained popularity due to the growing concerns over the global warming issue. Hence, many light and medium reservoirs are subjected to Immiscible, miscible, and near-miscible CO 2 flooding. In CO 2 or hydrocarbon flooding, the asphaltene to resin ratio of crude oil is altered, causing asphaltene precipitation and thereby its deposition. The deposition of asphaltene in an oil reservoir during production causes formation damage and productivity decline. The severity of this damage is different during miscible and immiscible flooding. In this study, asphaltene deposition due to miscible and immiscible carbon dioxide flooding and its effect on porous media damage are experimentally investigated. A high-pressure, high-temperature coreflood set-up is designed to work under reservoir conditions up to 6000 psia and 150 ºC. Dynamic displacement experiments were carried out to study the process of asphaltene deposition and permeability reduction during CO 2 injection in core samples. For this purpose, the pressures along the core were measured at 4 different points to study the damage distribution. Damage index were measured in different sections and compared during miscible and immiscible flooding and the effect of residual gas saturation in permeability reduction is studied as well. The results showed that two parameters could change the permeability of the medium. At pressure lower than MMP trapped gas in the pores may also reduce the permeability and at pressure above the MMP asphaltene deposition is the main factor for the porosity and permeability reduction. The maximum damage index occurs in miscible flooding which was equal to 0.79.

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“…The design criteria and performance analyses of the pilot program were covered by previous publications 3,4,5,6 in detail.…”

Section: Field Development Historymentioning

confidence: 99%

CO2 Flooding in Joffre Viking Pool

Pyo¹,

Damian-Diaz²,

Powell³

et al. 2003

Canadian International Petroleum Conference

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Tertiary Recovery Potential of CO2 Flooding in Joffre Viking Pool, Alberta

Cited by 15 publications

References 0 publications

Screening, Evaluation, and Ranking of Oil Reservoirs Suitable for CO2-Flood EOR and Carbon Dioxide Sequestration

Screening, Evaluation, and Ranking of Oil Reservoirs Suitable for CO2-Flood EOR and Carbon Dioxide Sequestration

A Comparison of Asphaltene Deposition in Miscible and Immiscible Carbon Dioxide Flooding in Porous Media

CO2 Flooding in Joffre Viking Pool

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