... have been analysed to detect potential time shift changes in the selected horizon induced by the growth of the steam chamber. Time-shift changes were plotted for all 3 spots. An increase was observed for one of the spots (Spot 3) from the first 4D monitor in 2010 up to the last monitor in 2015...

... Several analytical models have been proposed for predicting steam chamber rise velocity, and in a few instances, for computing oil production rate at early times. Closmann and Smith (1983) measured the rate of steam chamber rise above a horizontal fracture in a steam injection project...

... Abstract The injection of air into mature steam chambers is a promising technology to reduce the steam-to-oil-ratios (SOR) in late stages of the Steam-Assisted-Gravity-Drainage (SAGD) recovery process in Athabasca oil sand reservoirs in Alberta, Canada. Air injection allows sustaining steam...

... Abstract A comprehensive analytical model of the Steam-Assisted Gravity Drainage (SAGD) process is developed, encompassing steam chamber rise, sideways expansion, and the confinement phases. Results are validated using experimental and field data. A new analytical model for predicting steam...

... in those reservoirs for which SAGD exhibits slow production of bitumen. Then, the observed results are analyzed by use of SAGD analytical equations that clarify several influential factors for bitumen flow beyond the edge of a steam chamber. It is shown that dilution of bitumen by solvent in steam-solvent...

... from larger heat losses through cap-rock and poorer oil mobility under reservoir conditions. A new EOR method, ES-SAGP, is introduced to develop this kind of reservoir. That is to say, non-condensate gas and vaporizable solvent is injected with steam into steam chamber during SAGD. The scaled 3D...

..., compared with the SAGD process, the water cut of MFAGD phase is also reduced. That is mainly caused by the effect of NCG on the expansion of steam chamber. Lab-scale numerical simulation Abstract Multi-thermal fluid is a new type of heat-carrier proposed in recent years for the EOR process...

... enhanced recovery Upstream Oil & Gas steam injection process steam-solvent combination calculation Modeling & Simulation concentration bitumen steam chamber condensation hydrocarbon condense reservoir enthalpy reduction hexane Artificial Intelligence heat loss...

... at the reservoir temperature, i.e. high viscous heavy oil. In fact, zero mobility of oil is one of the most important factors in a successful SAGD project, which has not received enough credit. Cold bitumen acts as a barrier against steam channeling, provides a good conformance for steam chamber and helps vertical...

... to calculate the condensate velocity and heat transfer considering both conduction and convection. First, heat transfer at the edge of a steam chamber is analyzed to understand the role of condensate flow and steam chamber interface movement. Three possible cases are proposed to analyze the relationship...

... ratio data matching. Abstract With the development of reservoir numerical simulation, especially thermal numerical simulation, people start to use thermal numerical simulation model to study the development and distribution of steam chamber in thermal recovery process. But as all known...

... is proving beneficial to both steam chamber development as well as improving the inflow profile of the producing well of the SAGD pair. Work conducted in the Surmont field of Alberta, Canada provided an excellent starting point to optimize flow control improvements to the SAGD process. However...

... Abstract Steam assisted gravity drainage (SAGD) is the most promising technique in heavy oil recovery. Determination of the steam chamber volume is very important for monitoring the progress of this process. Thermal well testing offers an early method to estimate the steam chamber mobility...

... with selecting the best operating strategy for a given reservoir. Results show that the injected steam and solvent vapor condense near the steam chamber boundary. The temperature near the chamber boundary drops because of a reduction in the partial pressure of steam.The condensed steam-solvent mixture drains...

... Method is employed for prediction of solvent distributions, and the viscosity variation in the mobile zone is determined using the Shu (1984) correlation. The results show that the fractional increase in oil flow rate depends on type and mole fraction of the solvent in the steam chamber. It is also...

... solution gas-oil ratio (Rs) is used as an "equivalent temperature variable". In the black-oil formulation: (1) fully saturated oil viscosity (μ o *) at reservoir pressure equals μ o that would be attained at steam-chamber temperature (T*) in the actual SAGD process; (2) initial oil viscosity (μ oi...

... with non-condensable gases reduces green house gas emissions. Methodology The theme of the study was to utilize SAGD technique more efficiently by augmenting steam injection cycle with either pure carbon dioxide (CO 2 ) or flue gases for reservoirs with bitumen oils. Once the steam chamber...

... out in an oilfield in Northeast China. The research indicated that the configuration of steam chambers caused by steam injection could be delineated from the high precision 3D seismic results, and it is more accurate than the reservoir simulation model in the local variation description...

... to verify the formation of emulsions and their net effect on heat transfer. Modeling & Simulation Upstream Oil & Gas mechanism thermal method flow in porous media enhanced recovery SAGD emulsion formation sensitivity recovery Fluid Dynamics steam chamber interface experiment...

... the complex effects of reservoir heterogeneities on the SAGD process. Numerical simulations are conducted with various realizations of shale distribution to compare SAGD performance in terms of the effects of NWR and AWR. Hydraulic fracturing is proposed to enhance steam chamber development for reservoirs...