Automatic water-supplementing water seal technology of water-seal well

The invention particularly provides an automatic water-supplementing water seal technology of a water-seal well. The automatic water-supplementing water seal technology of the water-seal well comprises the following steps that (1) a water-supplementing water tank is arranged on the inner wall of the water-seal well; (2) a water supplementing pipeline is introduced from a water supply pipe network of an oil field station or a high water tank in the oil field station to the end of a water supplementing pipeline at the upper end of the water-supplementing water tank, and is connected with a float valve, and the float valve is arranged in the water-supplementing water tank; (3) a communicating pipe is introduced from the lower end of the water-supplementing water tank to be communicated with the water-seal well so that a U-shaped tube can be formed by the water-supplementing water tank and the water-seal well, and a one-way valve is arranged on the communicating pipe; (4) incoming water in the water supplementing pipeline is provided for the water-supplementing water tank through opening of the float valve; (5) the one-way valve is opened, water in the water-supplementing water tank is conveyed to the water-seal well through the communicating pipe, and the liquid level in the water-seal well and the liquid level in the water-supplementing water tank are consistent. According to the automatic water-supplementing water seal technology of the water-seal well, automatic water supplementation of the water-seal well is achieved according to the principle of the U-shaped tube, the structure is simple, operation is convenient, the cost is low, automatic water supplementation of the water-seal well is effectively achieved, the water seal effect of the water-seal well is achieved, and the risk of safety accidents in the oil field station is reduced.