| 摘要 |
In order to lower the viscosity of bitumen or very heavy oil in deposits, thermal energy is applied to the deposit, especially inductive and/or resistive heat being optionally applied in addition to vapor that is applied according to the steam assisted gravity drainage (SAGD) process. According to the invention, a high-frequency generator feeds electric power to a linearly extended conductor loop (10, 15, 20) at a predefined depth of the deposit, the inductance of the conductor loop (10, 15, 20) being compensated in some sections or continuously. Advantageously, one of the conductors (10, 15) of the conductor loop (10, 15, 20) can be disposed substantially in a vertical direction above the extraction pipe (102). Models have shown that an extraction system can be exclusively operated by means of a device for inductive heating (electromagnetic gravity drainage (EMGD) process). |
