| 摘要 |
A side and bottom water layer thermal recovery method allowing electrically heating oil deposit in a horizontal well. A water layer is electrically heated by using a plurality of horizontal wells that are located at the upper part of a side and bottom water layer of oil deposit and are 20-30m away from the oil layer, so that the temperature of the whole oil deposit is uniformly increased to a state in which in-place oil can flow, so as to achieve centralized heat supply by means of thermal recovery, thereby improving the thermal recovery efficiency of a single well. Also disclosed is an electric heating structure for a horizontal well. The electric heating structure is provided with a sieve pipe. A plurality of ferromagnetic permanent magnets is deployed at the upper part of the inner side of the sieve pipe. Spring-shaped electric heating rods serially connected together are disposed in the middle. A heat separation board is disposed in the position of a horizontal diameter. A half lower sieve pipe is sealed and is hollow and jointly separate heat in combination with the heat separation board, and the down transfer of heat energy is reduced. |
