... Steam generator operating conditions and output steam quality Variable operating conditions (pressure, rate) and heat losses in surface network Uneven distribution of condensed water in surface network Variable heat losses in the wellbore of the injection well Some...

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... chemical additive Recovery Improvement enhanced recovery Upstream Oil & Gas displacement SAGD surfactant 1 mechanism Babadagli experiment steam chamber thermal method steam-assisted gravity drainage heat loss steam injection surfactant ionic liquid initial stage nanoparticle society...

... is viable and commonly used to recover heavy oil and bitumen primarily by thermally altering oil viscosity and improving the displacement of heavy oil. However, there are significant heat losses before the steam reaches the heavy oil, in addition to the concerns of high cost and emission of greenhouse gases...

... systems using natural gas (or higher carbon content fuels), especially in areas with large solar insolation. enhanced recovery upstream oil & gas sensitivity injection rate modeling & simulation heat loss economic analysis reservoir simulation sagd steam generation natural gas spe...

... units, and new water intercept wells (Row 3) were drilled one row further down structure. Heat losses to Overburden, Underburden, and by hot fluid withdrawal over time decreased the rate of steam front expansion. This paper discusses the "Steam Injector Relocation" strategy devised to specifically...

... and resulting failures, reducing thermal loads on cement and resulting cement failures, and reducing wellbore heat losses. The Ring Seal Floating Packer has a dual set of split rings machined from mild steel and heat treated to a specified spring rate allowing the rings to elastically collapse when inserted...

... Abstract Thermal recovery methods such as steam injection or in-situ combustion are preferred for heavy oil. In cold environments, wellbore heat losses are significant and limit the applicability of thermal recovery. Therefore, it is essential to insulate the well effectively and economically...

... originally to address environmental concerns associated with permafrost regions on Alaska’s North Slope, has evolved and been adapted for use in heavy oil fields around the world to reduce heat losses in steam injection wells, improve economics, and improve efficiency of heavy oil recovery. This paper...

... Abstract Accurate predictions of heat loss and temperature profile in thermal injection lines and wellbores are essential to designing and evaluating thermal operations. Although some sophisticated computer packages are available for such purpose, their accuracies suffer from numerical...

... of the wellbore to allow the tubing to grow at elevated steam temperature. A packer is used to isolate steam to the target interval, reduce wellbore heat loss and minimize casing stresses. Most recently, multi-string slim-hole injectors, in which two or three tubing strings are run side-by-side and cemented...

.../(hr-ft^2-°F) can be achieved with vacuum jacketed pipe depending on the spacing between connection points. As a comparison other types of insulated pipe-in-pipe systems have U-values in the range of 0.3-1 BTU/(hr-ft^2-°F). Three distinct areas of heat loss from vacuum insulated tubing are: main...

... saturation distribution upstream oil & gas stanford university heat loss saturation profile spe 46209 flow in porous media simulation result relative permeability steam quality geology reservoir simulation cc min permeability apparatus fluid dynamics geologist SPE 46209 A Study...

... model for steam drives that can handle steam override, viscous fingering and channelling in 3-D heterogeneous reservoirs. 1 The model incorporates gravity and viscous forces as well as heat losses to the cap and base rock. Capillary forces are not included. We use an interface approach where we...

...) ease with controlling steam breakthrough in individual sands, and (5) low cost access to bypassed oil. There also are disadvantages: (1) limited injection rates and limited downhole survey or remedial work, (2) increased wellbore heat losses, and (3) increased potential for thermal stress- related...

... energy balance for the steamflood, to calculate the steamflood capture efficiency and predict further steamflood performance. Heat-losses due to produced fluids were calculated. Predicted production schedules from the model were history-matched with field production data.' All steamflood calculations...

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... system generator eqn energy balance injection well production control reservoir surveillance mass rate range heat loss upstream oil & gas production logging production monitoring united states government error analysis volumetric rate spe 24079 measurement error steam distribution...

... into the water column and preferential steam movement into channel sands. The temperature log profiles were integrated to calculate the average monthly reservoir temperature, fractional reservoir heat retention, average monthly temperature, and heat losses to the overburden and underburden layers. With the data...

... extended to describe this override behaviour, by using a semi-steady state approximation for the heat transfer at the steam condensation front (SCF). In the absence of heat losses the ensuing equations are completely analogous to the equations for oil-water flow. We have also incorporated heat losses...