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...

Steam-assisted gravity drainage (SAGD) is one efficient and mature technology for recovering heavy oil bitumen resources. The key underlying mechanism the growth of steam chamber after injecting steam. However, due to complex geological environment, thief zones exist have a prejudicial effect on development chamber, thus impacting ultimate heavy-oil recovery. In this work, our objective investi...

Canada’s in situ oil sands can help meet the global demand. Because of energy-intensive extraction processes, operations also play a critical role meeting carbon budget. The steam ratio (SOR) is an indicator used to measure energy efficiency and assess greenhouse gas (GHG) emissions industry. A low SOR indicates process that more efficient less intensive. In this study, we applied machine learn...

Abstract Life cycle assessments can help inform decision-making about greenhouse gas (GHG) emission reduction opportunities but are often not embraced by stakeholders associated with industries where study results highly scrutinized and contentious. This project was motivated stakeholder interest in understanding open source life models (the Oil Production Greenhouse Gas Emissions Estimator, OP...

SAGD technology has been successfully and widely applied in the development of superheavy oil sand projects. Before normal process, some preheating ways are often needed to realize interwell hydraulic connection, this means that determining reasonable conversion timing from stage is an essential precondition for good performance. Previous numerical simulations or qualitative analysis temperatur...

The high recovery performance of steam-assisted gravity drainage (SAGD) makes it a popular option for heavy oil resources. Currently, most the reservoirs developed by SAGD in China are late development phase, with energy consumption due to reduced thermal ef?ciency. use wind-down processes involving CO2 combination steam is considered as viable alternative limit consumption, and also reduce amo...

Abstract Viscosity-temperature behavior is important for the thermal recovery of bitumen: firstly, it a criterion evaluating evolution mobility with temperature, which affects oil production; and secondly, determines role bitumen in geomechanics sand reservoir. To quantitatively evaluate effect temperature on dynamic viscosity, some experimental modeling investigations were conducted. The visco...