Bridge plug setting tool and setting method

Abstract

The invention discloses a bridge plug setting tool and setting method. The tool comprises an electric power connecting part, a power balance part and a propelling part which are sequentially connectedin an extending mode; the power balance part comprises a pressure providing structure and a balance piston arranged in a sliding mode in the extending direction, an outer pressure cavity is formed inthe side, facing the electric power connecting part, of the balance piston, and an inner pressure cavity is formed in the side, back on to the electric power connecting part, of the balance piston; the propelling part comprises an oil cylinder piston and a piston tension rod arranged on the side, back on to the electric power connecting part, in the oil cylinder piston, the pressure providing structure provides power enabling the oil cylinder piston to move in the extending direction for the oil cylinder piston through a pressurizing cavity, and a reversing valve is arranged between the innerpressure cavity and the pressurizing cavity in an openable or closable mode; and the power connecting part is used for connecting the power providing structure and supplying power to the pressure providing structure. According to the tool and method, the technical problems that in the prior art, a gunpowder type setting tool is not high in safety and success rate, and a common hydraulic type setting tool is large in length, so that the actual construction requirements are inconvenient to meet are solved.

Description

technical field [0001] The invention relates to the technical field of electrohydraulic bridge plug setting, in particular to a bridge plug setting tool and a setting method thereof. Background technique [0002] In the field of petroleum industry, bridge plugs are usually used to achieve interlayer isolation, which has the advantages of relatively few construction procedures and accurate jamming positions. [0003] The gunpowder type cable bridge plug setting tool widely used in China was introduced from the United States in the 1980s. The tool carries a detonator and a slow-release explosive, and uses a cable to apply an electric pulse to detonate the detonator and explosive. The slow-release explosive explodes to generate high pressure. Through the hydraulic cylinder and piston, the high pressure is converted into tension, and finally the bridge plug is set. [0004] The existing gunpowder type cable bridge plug setting tools mainly have the following defects: [0005] ...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a bridge plug setting tool and its setting method to solve the problem of low safety and success rate of the gunpowder setting tool in the prior art, and the relatively long length of the general hydraulic setting tool. Long, technical problems that are not convenient for actual construction needs

Images