.... An understanding of this mechanism and its optimal timing are important in enhancement of the SAGD process. Introduction More than 52 billion cubic meters (330 billion barrels) of bitumen are believed to be in place in the Athabasca oil sands deposit in Canada, which are recoverable using the Steam Assisted...

... tends to push the oil down. Gas accumulates in the upper part of the reservoir and oil drains to the production well near to the bottom. The mechanism is discussed in the paper together with results from recent scaled, physical model experiments. The work demonstrates that SAGP may be expected...

... Abstract Various formation damage mechanisms occurring in the Cardium sandstone have been documented. Many of these have been studied in the context of injectivity and other secondary recovery techniques. Recently, increasing attention is being devoted to damage in this formation from...

... tool water breakthrough plover lake enhancement enhanced recovery history cold heavy oil production mechanism pwt treatment upstream oil & gas wellbore poor candidate oil rate excitation production rate workover chop well production decline THE PETROLEUM SOCIETY PAPER 99-77...

... Abstract During drilling and completion phases, the primary mechanisms of near-welibore formation damage can be attributed to the following factors: pore throat constriction catied by clay swelling, deflocculation due to incompatible fluids or clay migration; water blocking resulting...

... in the foam, thereby sustaining reservoir pressure. In a recent paper 1 , the mechanisms that lead to this increased productivity were outlined and the suitable reservoir types conducive to cold production techniques were identified. In this paper, these mechanistic concepts are extended to practical...

... mechanisms which may occur in reservoirs and how, in certain situations, these types of damage may be reduced or eliminated through the appropriate use of underbalanced drilling technology. Various situations in which underbalanced drilling technology may result in potential significant formation damage...

..., though, that one key factor is the state of wax saturation in the oil as it is undergoing magnetic treatment. A mechanism that may account for the magnetic effects observed in the experiments will be proposed. Some implications of this mechanism on field applications of magnetic technology...

... matrix blocks are reported for the first time. The blocks experienced an advancing fracture-water level (FWL). Immersion-type experiments were performed for comparison. The experiments revealed that the dominant recovery mechanism changed from co-current to counter-current imbibition when the boundary...

...%, and no obvious temperature effects were observed. Both features are perhaps caused by high pressure decline rate resulted from the step pressure decline. Whether foamy oil flow occurs or not, the solution-gas drive mechanisms in heavy oil reservoirs are similar to that in the conventional oil. The liberation...

... recovery strategies must be developed to efficiently recover the amount of oil remaining in these reservoirs. Hence, a thorough understanding of various recovery mechanisms is required. annual technical meeting enhanced recovery operation reservoir steam zone sagd marginal heavy oil reservoir...

... as the combined effect of naturally occurring destructive and nondestructive processes which reduce a contaminant's mobility, mass and associated risks. Non-destructive mechanisms include sorption, dilution and volatilization. Destructive attenuation processes include abiotic and biotic transformation...

... displacement. Since emulsion flooding is a complex EOR process involving several mechanisms that occur at the same time during displacement, simulation of oil recovery by emulsion flooding requires an understanding of the flow mechanics of emulsions in porous media. With this end in view, the present study...

...) to form gel block. The objectives of the experimental study were: to understand the mechanisms of anti-water coning process using phenol-formaldehyde gels; examine the feasibility of using phenol-formaldehyde gels for anti-water coning process; and to generate suitable data for validation...

... as a mechanism for significant permeability impairment in low permeability intercrystalline sandstone and carbonate formations 1–5 . Phase traps normally occur when a water or hydrocarbon based fluid is either forced or imbibed into porous media with a subirreducible water or hydrocarbon saturation (ie...

... analysis, lithology and outcrop description, and trapping mechanism. The geophysical approach uses the contrast of physical properties of rocks such as gravity, magnetic, electrical resistivity, and seismic data. The methodology used to combine seismic data with wireline logging data for evaluating thin...

.... This paper reviews the proposed enriched gas pressure cycling process and discusses the various mechanisms controlling it. The process is effective if appropriate reservoir conditions can be achieved. The process appears to be a viable improved recovery method for depleted heavy oil reservoirs on a cost...

... and to furtherunderstand the oil production mechanism. Results predicted that more than 60%of the oil can be produced in 6 years of operation with a steam-oil ratio ofless than 3.0. The study was extended to provide a visual understanding of theflow behavior of steam, oil and water in the reservoir. The fluid flow...

... management Aspects of optimization and risk enter into both cases. To achieve an economic completions strategy compatible with production rates, one must understand the mechanisms involved, carry out analyses which capture the key factors which contribute to solids and fluids production, and come up...

... Abstract During drilling and completion the primary mechanisms of near-wellbore formation damage include pore-throat constriction, water blocking, plugging with drill solids and mud products, and loading of the reservoir with drilling or completion fluids. Among these mechanisms, some...