Fracturing and imbibition method for low-permeability reservoir

The invention discloses a fracturing and imbibition method for a low-permeability oil reservoir, and belongs to the technical field of oil reservoir development. The method comprises the following steps: preparing a first liquid amount of dry layer energizing fluid, a second liquid amount of gel fracturing fluid with a first sand content, and a foaming type imbibition agent with a target concentration, and injecting the dry layer energizing fluid into an adjacent dry layer of a target oil layer under the condition that the injection pressure of the target oil layer is greater than the fracture pressure of the target oil layer, and gel fracturing fluid and a foaming type imbibition agent are sequentially injected into the target oil layer. According to the technical scheme provided by the embodiment of the invention, the dry layer energizing fluid is adopted, the bottom layer energy of the target oil layer is increased, the gel fracturing fluid is adopted, the underground flowing environment of crude oil can b