Abstract
The modern state and trends in the development of technologies for mining the heavy oil and native bitumen deposits have been analyzed. It has been set that presently known technologies for heavy oil and natural bitumen extraction do not cover the entire depths range of their occurrence. The main possibility of the development of heavy oil and natural bitumen deposits on the basis of technology by hydraulic mining by boreholes has been substantiated. The peculiarities of this technology are analyzed. The ways of its main elements adaptation for mining the natural bitumen from bituminous sands deposits are offered. The principal scheme has been substantiated for a method of mining the natural bitumen on the basis of hydraulic mining by boreholes. The thermodynamic processes occurring in the productive formation during its drilling with the simultaneous circulation of the heat-transfer medium have been analyzed. A mathematical model has been developed of the thermal penetration process into the productive formation for the time interval from the beginning the borehole drilling to the beginning the rock disintegration. Also, it has been solved the task of stationary mode in the borehole at the stage of its drilling.
Highlights
Available oil and natural gas reserves are constantly being exhausted
The resources of nontraditional sources of energy raw materials much exceed the resources of traditional hydrocarbons deposits
Schramm et al have shown that a reduction in viscosity by increasing the processing temperature or through the addition of diluents enhances bitumen separation for Athabasca oil sand ores [16]
Summary
Available oil and natural gas reserves are constantly being exhausted. At the same time, the demand for gas and oil products is growing rapidly. A previous study has shown that the energy consumption for 1 oC increase per a tonne of oil sand ore is 5 million Joules [8]. Miller and Misra have shown that the hot-water extraction process is influenced by many physical and chemical variables [14, 15] Variables such as bitumen viscosity, sand particle size distribution, temperature, pH, time of digestion, flotation and degree of agitation, all influenced processability. Schramm et al have shown that a reduction in viscosity by increasing the processing temperature or through the addition of diluents enhances bitumen separation for Athabasca oil sand ores [16]. Recoveries by temperature increase exceed those associated with solvent addition, which is in agreement with the study of Schramm et al [17], who measured better recoveries from temperature increase compared to the addition of kerosene
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