Stimulation Method

Abstract: The present invention relates to a stimulation method for stimulating oil or gas containing parts of a formation said parts being situated between an injection or a production well and a production well. The method comprises the steps of arranging at least one mechanical wave activation device in one or more injection and/or production wells below a well head or a blowout preventer for transmitting mechanical waves in one or more injection and/or production wells arranging a plurality of mechanical wave sensors in one or more injection or production wells for receiving the mechanical waves transmitted from the mechanical wave activation device injecting a pressurised fluid into the formation from the one or more injection and/or production wells towards the one or more production wells activating the mechanical wave activation device with a preselected range of frequencies or a single frequency thereby converting energy from the pressurised fluid into mechanical waves receiving the mechanical waves transmitted by the mechanical wave activation device through the formation by the plurality of mechanical wave sensors and creating a tomography of water gas and/or oil interfaces in the part of the formation situated between the mechanical wave activation device in the injection and/or production well and the mechanical wave sensor in the at least one injection and/or production well from the mechanical wave received by the plurality of mechanical wave sensors arranged in the at least one injection and/or production well. Furthermore the invention relates to a downhole stimulation system.

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