The existence of the bottom oil–water transition zone (BTZ) greatly impairs performance conventional steam-assisted gravity drainage (SAGD) process and its mitigation measures are very limited. In order to accelerate oil production decrease Steam-to-Oil Ratio (SOR), a promising technology involving steam drive (SDGD) by placing dual-horizontal wells with high permeability in BTZ was systematica...

In this Special Issue, all aspects of fluid flow and heat transfer in geothermal applications, including the ground exchanger, conduction, convection porous media, are considered. The emphasis here is on mathematical computational conventional unconventional reservoirs, engineering, drilling enhanced oil recovery (hydraulic fracturing, steam-assisted gravity drainage (SAGD), CO2 injection, etc....

Shortand long-term ground deformation at the cyclic steam stimulation (CSS) enhanced oil recovery sites in the Cold Lake region of Alberta, Canada, was measured with RADARSAT-2 differential interferometric synthetic aperture radar (DInSAR) during 2011–2016. The interferometric processing of 84 highresolution spotlight images revealed extensive short-term ground uplift and subsidence greater tha...

It is necessary to establish effective communication between two horizontal wells during the preheating period of steam-assisted gravity-drainage (SAGD). However, time usually very long, which results in high steam consumption and CO2 emissions. There little research on effects different wellbore fluids period. The heat transfer heating characteristics fluids–water, heat-conduction oil, air–wer...

In thermally enhanced recovery processes like cyclic steam stimulation (CSS) or steam assisted gravity drainage (SAGD), continuous steam injection entails changes in pore fluid, pore pressure and temperature in the rock reservoir, that are most often unconsolidated or weakly consolidated sandstones. This in turn increases or decreases the effective stresses and changes the elastic properties of...

The SAGD start-up process normally circulates steam in both the injector and producer, which consumes a large amount of steam, requires high cost high-temperature-produced liquid treatment, unavoidably results preferential communication heterogeneous reservoirs. In order to achieve uniform preheat full chamber development wellpairs, downhole electrical heating start up was proposed investigated...