Well-washing-free and drifting pressure testing integrated tool and method for toe end sliding sleeve well

The invention provides a washing-free and drifting pressure testing integrated tool for a toe end sliding sleeve well, which comprises a soluble drifting tool and a pressure testing seat, the pressure testing seat is of a cylindrical structure, the soluble drifting tool is made of a soluble material, and the soluble drifting tool is inserted into the pressure testing seat and is hermetically connected with the pressure testing seat. A pressure test seat is preset at a certain position above a toe end sliding sleeve tool on a well completion pipe string, a soluble drifting tool is pumped to the pressure test ball seat through an opened channel of the toe end sliding sleeve to complete drifting before fracturing, and then a wellhead is pressurized to perform pressure test on the wellhead and a shaft before fracturing; according to the tool and the method, continuous oil pipe communication and well washing before fracturing of the toe end sliding sleeve well are omitted, continuous oil pipe ...