... resources of the Western Canada Sedimentary Basin. This paper provides an explanation of why decline analysis appears to provide a valid method for estimating the conventional crude oil resources of the basin while the same is not true for natural gas. The paper proposes solutions to the problems...

... of microbubbles can be correlated with the asphaltene content of a crude oil. Islam 7 summarized these findings and concluded that the charged nature of asphaltene particles must be responsible for increased bubble captures. He argued that a new theory should be presented in order to accommodate for microbubbles...

... hydrojet oil recovery wellbore upstream oil & gas hydrocarbon sagd reservoir drilling fluid flow rate drilling system surfactant solution crude oil spallation reservoir characterization enhanced recovery oil sand steam-assisted gravity drainage heavy oil bitumen fracture gas jet...

... Abstract A fast and accurate method for the group analysis of crude oils in porous media that describes petroleum components (especially heavy fractions) has been developed NMR structure group analysis is used as the tool for the characterization of crude oils. This method is proposed...

... Abstract The use of magnetic fluid conditioning (MFC) technology to treat downhole problems with wax deposition in the production of waxy crude oil has sparked considerable controversy. A variety of claims have been made about the success rate of the technology in field applications...

... of varying permeabilities are used. Four different types of fracturing fluids are tested. Also, the effect of fluid loss additive on regain permeability is investigated. The movable oil phase in the core sample is either mineral or crude oil. The variation of return permeability with time and distance...

... Abstract Waterflood recoveries of a Prudhoe Bay crude oilfrom Berea Sandstone were determined for two brine compositions used previously in a study of the effect of brine composition on the recovery of Moutray crude oil. For standard waterfloods (no difference between the initial and injected...

... carbon is therefore lost to this low-value product, which often contains much of the sulfur and other pollutants that were originally in the crude oil. It has been estimated that 28 million metric tons of fuel grade coke will be produced world-wide in the year 2000. It is also estimated that this coke...

... between the injected gas phase and the reservoir crude oil at the temperature of the particular oil containing formation and at varying pressures and/or enrichment levels of the gas phase. These interfacial tension measurements are carried out by computer digitization of the image of the profiles...

... Abstract There currently exists a large supply of heavy crude oils which are relatively uneconomical to produce. However, there are processes available which can be used in a downhole environment to upgrade them, resulting in significantly less sulfur and lowered densities and viscosities...

...-Crystal (DDDC)" technique(l) with the traditional "modified sessile drop" procedure. The DDDC technique was found to be a more reliable method for the Elk Point crude oil/brine/rock systems. The DDDC experimental procedure is less time consuming because this technique achieves rapid adsorption equilibrium...

... Abstract Adhesion of crude oil to the reservoir rock surface influences oil recovery in primary, secondary and tertiary operations. The various wettability measurement methods reported in the literature either do not account for the effects of adhesion on measured contact angles or they only...

... Abstract In this work a three-dimensional, compositional reservoir simulation study is conducted to investigate the feasibility of applying a CO 2 immiscible displacement process to recover the West Sak oil. The reservoir crude oil composition is obtained from experimental data and the fluid...

... Abstract The production and processing problems associated with the presence of asphaltenes in crude oil is well known. This is especially true in bitumen production from tar sands when the use of light hydrocarbon solvents is being considered as an alternative to the conventional steam...

... Introduction Hydrogen is essential for the upgrading of bitumen and heavy oil. These heavy crudes are hydrogen deficient (or carbon rich) and require significant modification to their molecular structure and hydrogen to carbon ralio to be useful as refinable crude oil or transportation fuels...

... calendar day of Cold Lake bitumen and produce a synthetic crude oil that could be substituted for conventional crude oil. With the capital and operating cost estimates as the base, detailed economic and sensitivity analyses were performed. The results of these analyses, as measured by the "Price Available...

.... complex reservoir frontal velocity emulsion recovery slug morichal crude oil emulsion slug waterflood breakthrough morichal emulsion rale displacement injection rate crude oil oil recovery bitumen upstream oil & gas oil sand venezuelan crude oil enhanced recovery mlday emulsion...

... the viscosities of the various oil/CO 2 mixtures within 8%. Introduction Immiscible carbon dioxide flooding is increasingly being considered for enhanced oil recovery, especially from medium and heavy oil reservoirs. The physical mechanisms by which CO 2 , contacts and mobilizes the crude oils are oil...

... deposit because the accompanying crude oil cannot re-dissolve them at existing bottom hole temperature. Thus, when wells become older and their bottom hole temperature falls, the chances for paraffin deposition and plugging increases. Additional paraffin deposits occur downhole due to hot oiling...

... formation damage. The damage caused by hot oiling is due to the loss of crude oil containing waxy solids into the formation. Often the damage is persistent and can significantly reduce the ultimate oil recovery. Thus, it is desirable to have a way of predicting the tradeoff's between removal of wax...