Stimulation method

摘要

A method for improving fuel collection from an underground deposit comprising stimulating fuel-containing sections of an underground formation, the sections being located between a first well and a second well, the first well being either an injection well or a production well, and the second well being a production well. The method includes arranging a mechanical wave generation device downhole in the first well and arranging at least a first mechanical wave sensor in the production well, injecting a pressurized fluid into the formation from at least the first well, activating the mechanical wave generation device downhole to project mechanical waves into and through the fuel-containing sections, receiving and processing the waves sent from the first well, generating a tomography of the underground environment between the first well and the second well, and collecting fuel in the second well via inflow valves arranged in the second well.

主权项

1. A method for improving fuel collection from an underground deposit comprising stimulating at least a first fuel-containing section of an underground formation, the at least first section being situated between at least one first well and a second well, the at least one first well being either an injection well or a production well and the second well being either an injection well or a production well, the method comprising:
providing at least one mechanical wave generation device downhole within at least the at least one first well; arranging at least a first mechanical wave sensor in at least the second well, the first mechanical wave sensor being configured to receive and interpret mechanical waves transmitted from the at least one mechanical wave generation device; injecting a pressurised fluid into the formation from at least one injection well of the at least one first well and the second well in a direction towards a production well of the at least one first well or the second well; activating the at least one mechanical wave generation device downhole to project a preselected range of frequencies or single frequency into the formation after or simultaneously with injecting the pressurised fluid into the formation; receiving the mechanical waves transmitted by the at least one mechanical wave generation device through the formation via the at least first mechanical wave sensor; and creating a tomography of water, gas, and/or oil interfaces in the at least first section of the formation using data gathered by the at least first mechanical wave sensor.