... Abstract Due to the favorable effects of CO 2 , such as oil viscosity reduction, oil swelling, and surface tension reduction, CO 2 injection has been established as an effective technique in enhanced oil recovery for light to medium oils. However the utilization of CO 2 for improving...

... Abstract Results of a reservoir condition core flood were matched by a compositional model. Using this model as a base case, the effect of gas composition on oil recovery from an onshore Australian oil field was investigated. Based on this and earlier studies it was found that CO 2 injection...

... Abstract Important modelling techniques for CO 2 storage in saline aquifers are discussed, in particular solubility trapping, residual gas trapping and geochemistry for mineral trapping. These modelling techniques are applied to the simulation of several important aspects of CO 2 storage...

... pressure gauges and then conduct an extended flow and buildup test. The extended flow period can vary from a few hours to a few days and the subsequent buildup can vary from a day to several weeks. Fracture treatments in the Western Canadian Sedimentary Basin (WCSB) increasingly utilize CO 2 or Nitrogen...

... Abstract CO 2 sequestration in depleted oil reservoirs provides an appealing option for reducing CO 2 emissions in the atmosphere. However, the available space in most depleted oil reservoirs for storing CO 2 is quite limited because a large portion of the reservoir is occupied...

... Abstract Among the three types of geological CO 2 sequestration (mature oil and gas fields, unminable coal beds and deep saline formations), depleted gas condensate reservoirs are particularly interesting. Firstly, because of the high compressibility of gas, these reservoirs have larger...

... – 72% CO 2 ) injection cycles. Oil recovery after primary production and six solvent cycles was 50%, which indicates the potential viability of the CSI process. Concurrently with the laboratory physical simulation, a numerical simulation model was developed to represent the physical behavior...

... has been used, and the asphaltene precipitation amount due to pressure reduction and CO 2 injection processes were measured for one of the Iranian heavy crudes. The molecular weight distributions of asphaltene in liquid phase at different gas compositions as well as total asphaltene content were...

... and post-operation liability is concerned. One of the numerous advantages of the charcoal approach is its easier reversibility both in terms of liability and costs. Although implementation of this approach at a scale where it can make a significant impact on global CO 2 concentration needs to be preceded...

... Abstract DF1-1 gas field is located in the west of the South China Sea, which is associated with high concentration of CO 2 . Currently CO 2 separated from the natural gas stream is emitted into the atmosphere. In this study, a demonstration project of CO 2 capture and storage (CCS...

... process – coupling CO 2 and polymer injection – can increase EOR performance for heavy oil reservoirs. The oil recovery performance of three EOR modes [water-alternating-gas (CO 2 WAG) injection, polymer-alone flood, and coupled CO 2 and polymer injection was compared in laboratory-scale linear...

...-packs of 5.4 and 2 Darcies (D). Methane was recovered by injection of either CO 2 , or flue gas from this heterogeneous system. The effect of gravity segregation (between injected and produced gas) on EGR was also investigated by means of a 2 dimensional physical model containing upper and lower...

... of this paper is to provide a workflow and guidelines for field application by studying the inverse problem, the solution methods and associated error estimates for the unknown model parameters, and the resolving power for each parameter. As a field case demonstration, the methodologies are applied to a CO 2...

... Abstract Miscible injection of carbon dioxide (CO 2 ) has seen a significant increase in interest for the purpose of enhanced oil recovery in conventional oil reservoirs. However, naturally fractured reservoirs, which are among the largest oil reserves in the world, are considered poor...

... reservoir co 2 thermal method PAPER 2009-094 Effect of Mixed Gas Solvent Injection on Performance of the Vapex process in an Iranian Heavy Oil Sample M. DERAKHSHANFAR, R. KHARRAT, B. ROSTAMI Petroleum University of Technology S.R. ETMINAN University of Calgary This paper is accepted for the Proceedings...

... Abstract Coal-fired power plants are producing flue gas including almost of Nitrogen (around 79%), next is Carbon dioxide (around 10 -15%), and small amount of others gases such as H 2 , NO x , SO 2 . One of the promising methods to reduce CO 2 emission is the CO 2 sequestration into deep un...

... Abstract During gas injection projects (CO 2 or hydrocarbon miscible/ immiscible flooding, CO 2 huff 'n puff or Vapex), only a portion of the injected gases are produced back during injection periods, with additional amounts thereafter. Significant portions of the injected gases (upwards...

... Abstract This paper examines the results obtained from several sets of experimental work conducted on cement deterioration in environments similar to those found in CO 2 injection and storage projects. The study consisted of preparing and investigating the behavior of several hundred samples...

... was defined as 0.001 md. reservoir type coal seam gas anisotropy coal rank upstream oil & gas complex reservoir methane recovery displacement ratio composition co 2 permeability ecbm recovery coalbed methane cleat coal matrix coal bed methane breakthrough drainage area recovery...

... in Ptolemais are among the most polluting in the European Union in terms of relative emissions per produced KWh, releasing significant quantities of green-house effect gases, CO 2 , CH 4 , and toxic ash and dust. However, the worst coal fired power stations in absolute emissions causing severe environmental...