... that remain relatively stable in temperature throughout the life of the operation. Conversely, fluid flow through the perpendicular arrangement of wells in XSAGD exposes cooler portions of the reservoir to conduction heat transfer from hot steam flowing in the injectors or heated bitumen and steam condensate...

... Abstract The initial steam chamber that developed during the circulation phase of a Steam Assisted Gravity Drainage (SAGD) process impacts the efficiency of bitumen recovery tremendously. The circulation phase, during which both horizontal injector and producer in a SAGD well pair are put under...

... a new well pattern that may enhance the oil flow rate two to ten times over the classical approach. In the new well pattern, additional horizontal injectors, perpendicular to the injector and the producer in classical VAPEX, are placed in the top-most region of the reservoir. The enhanced oil rate...

... to the direction of dip were also briefly analyzed. The conclusion presents a highly improved configuration for the SAGD well-pair array that resulted in trebling the oil recovery attained by the initial well arrangement. thermal method PVT measurement spe ps choa SAGD injector well pair heavy oil...

... in the field applications. Upstream Oil & Gas viscous oil reservoir water saturation application Modeling & Simulation water injection rate EM heating power input injector oil reservoir viscosity conductivity electrical heating reservoir Injection Rate enhanced recovery heating...

... pressure drilling workover blowout normal operation blowout Upstream Oil & Gas pilot project Completion Installation and Operations injector completion option workover injection specific pilot project workover frequency probability blowout response plan environmental risk consequence...

... control occur, and with liquid rates that can be over 50 times the normal production liquid rates. production control Reservoir Surveillance reservoir simulation well control contingency planning injector simulator spe ps choa 117681 production monitoring enhanced recovery Modeling...

... to generate and inject steam in a SAGD pad are significant. Finding ways to use steam more effectively in these operations should result in increased production efficiency and improved financial return on these projects. By strategically placing steam injectors and by controlling the amount of steam injected...

... consequently decreased the SOR. It was also observed that a lower pressure differential between the injector and producer well was established when the short production tubing string was extended. The results for this study will assist SAGD producers to re-evaluate the position of the short production...

... technique for SAGD steam chamber growth monitoring and production optimization. oil sand SAGD injector enhanced recovery complex reservoir concentration thermal method bitumen steam-assisted gravity drainage variation shale oil rate viscosity Production Characteristic shale layer...

... directional drilling injection well pilot project producer development plan production well viscosity multilateral well emulsion west sak drill site horizontal injector ds-1j project injector bopd enhanced recovery kuparuk core area upstream oil & gas reservoir lateral...

... steam zone permeability ito sagd operation observation well thermal method steam flow injection pressure steam-assisted gravity drainage upstream oil & gas injector steam chamber expansion phase alberta research council circulation history match enhanced recovery heave injection...

... & gas enhanced recovery simulation producer spe ps-cim choa 97921 bitumen oil sand complex reservoir thermal boundary layer injector bitumen saturation sagd operation pressure canadian petroleum technology canadian international petroleum conference alberta Introduction...

... Typically, one steam injector well is surrounded by a pattern of producing wells. Each well pattern in the field will generally include a temperature-observation well to monitor formation temperature response to the steam flood. This steam flood field has three primary oil producing sands...

... or artificial lift. Uniform distribution of steam along the entire length of the well bore is very important for the uniform growth of the steam chamber. This is very important to make the entire length of the well productive. Pressure drop along the length of the injector and producer may cause steam break...

... months 1500 kPa beyond 18 months Constant 3000 kPa injection 800 kPa minimum producer pressure 500 m 3 /d cold water equivalent maximum injection per well 90% bottomhole steam quality at injector 500 m 3 /d maximum liquid production rate per well 3°C sub-cool (steam-trap...

... steam injectors. The scope of the project includes ~79 horizontal wells, associated vertical injectors and surface facilities, using a staged-development for a multi-year drilling program. The average horizontal well produces about 100-250 BOPD in comparison to an average vertical well in the reservoir...

... low reservoir pressures (300-450 psia), an integrated reservoir study was conducted. In this study the water injection with vertical wells were compared with multilateral well technology by using a numerical simulation model. The water flooding scheme with multilateral wells as injectors and producers...

... depletion is improved by placing the injector close to the top of the formation and the producer near the bottom. Once the steam chamber between injector and producer is formed and continuous, the gravity drainage mechanism becomes dominant. This regime is described as SAGD and the oil production...

... injector sandstone producer drilling operation steam-assisted gravity drainage drillstring design society well logging thermal method drilling fluids and materials log analysis sagd reservoir characterization Introduction In June and July 2000, Derek Resources drilled two horizontal...