Orifice device for non-hoisting drilling water pressure test and using method thereof

The invention discloses an orifice device for a non-hoisting drilling water pressure test and a using method thereof. The device comprises a conversion joint and a body. The upper part of the conversion joint is provided with a female joint, and the lower part of the conversion joint is provided with a drill rod male joint. The lower part of the body is provided with a casing pipe. A pressure gauge and a water injection pipe joint are mounted on the body, and a water injection valve is mounted on the water injection pipe joint. The conversion joint and the body are connected by a flange. According to the method, the water pressure test can be performed under the condition that a drill rig is not hoisted out of a hole, and the inside pressure data information can be obtained timely by the pressure gauge. The work efficiency is effectively improved, and the labor intensity of a worker is improved. According to the device, the water injection pipe joint and the upper part of the conversion joint can be used for