Method for extracting bitumen and/or ultra-heavy oil from an underground deposit, associated installation and operating method for said installation

摘要

A method for extracting bitumen and/or extra-heavy oil from an underground deposit is provided. The energy for producing the steam and for the electric heating is generated in situ, for which purpose part of the extracted bitumen and/or extra-heavy oil is burned in an industrial turbine with a downstream generator coupled to the turbine. The industrial turbine may be a gas turbine or a steam turbine. In particular the industrial turbine with downstream generator is assigned a waste heat recovery steam generator which serves for generating the steam and accordingly takes the form of a boiler. Through intermediate storage of the bitumen and/or ultra-heavy oil produced it is possible to implement a self-contained closed circuit which operates autonomously, independently of any external energy supply, using approx. 20% of the extracted bitumen and/or extra-heavy oil for the purposes of extraction.

主权项

1. A method for extracting bitumen and/or extra-heavy oil from an underground deposit, comprising:
lowering the viscosity of the bitumen and/or extra-heavy oil “in situ”, by supplying energy to the deposit in a form of steam flowing through the deposit and electric power for inductive and/or resistive heating; generating in a decentralized manner the energy for generating the steam and also for electric heating at a site of the extraction facilities; and using part of the extracted bitumen and/or extra-heavy oil for operating an industrial turbine having a generator coupled thereto for the purpose of generating electric power, wherein the electric generator supplies the power required for electric heating purposes and a boiler associated with the industrial turbine is used for generating steam by evaporation of water that is separated and recovered from the extracted bitumen and/or extra-heavy oil, wherein the method further comprises providing at least one well pad for distributing said steam and said electrical power, to which the electric power generated in the generator and power in the form of steam are simultaneously supplied in a ratio of between 1 to 3 and 1 to 4.