A kind of salvage system and using method of water delivery steel pipe in water source well

Abstract

The invention discloses a water conveying steel pipe fishing system in a water source well and an application method. The water conveying steel pipe fishing system in the water source well comprises a rotary pressurization hoisting system and a fishing device, and is characterized in that the fishing device comprises a fishing steel pipe, the bottom part of the fishing steel pipe is provided with a cutting edge, and the inner wall of the fishing steel pipe is provided with upward inclined jacking pieces; the rotary pressurization hoisting system comprises a lifting device, a drilling rod, a rock-core drilling machine and a hydraulic jack, the lifting device is connected with the top part of the drilling rod, the bottom part of the drilling rod is connected with the fishing device, the drilling rod drives the fishing device to rotate through the rock-core drilling machine, and the hydraulic jack provides upward pressure for the drilling rod; and the lifting device is provided with a tension meter used for displaying tension of the lifting device. According to the invention, a clamped object between the water conveying steel pipe in the well and the wall of the water source well can be disposed through the fishing device, an extruding force between the water conveying steel pipe and a casing pipe or the well wall is removed, and the accident water conveying steel pipe is fished up through a rotary hoisting device.

Description

technical field [0001] The invention relates to a fishing system for a water delivery steel pipe in a water source well and a method for using it, and belongs to the field of maintenance of water supply equipment and facilities in an industrial and civil water source well. Background technique [0002] Industrial or civil water supply wells often use steel pipes as the water delivery pipes in the wells, and the steel pipes are connected by flanges. During long-term use, the water pipe or connecting flange in the well is corroded. Sometimes when repairing the pipelines of the uphole or downhole equipment, the pipe tongs, hardware tools or screws are often accidentally dropped into the well due to improper operation. Stuck between the submersible pump and the pipe wall of the water source well, the water delivery pipe in the water source well is squeezed into the pipe wall or well wall of the water source well, which brings great difficulties to lift the water delivery pipe o...

AI Technical Summary

Problems solved by technology

Sometimes when repairing the pipelines of the uphole or downhole equipment, the pipe tongs, hardware tools or screws are often accidentally dropped into the well due to improper operation. Stuck between the submersible pump and the pipe wall of the water source well, the water delivery pipe in the water source well is squeezed into the pipe wall or well wall of the water source well, which brings great difficulties to lift the water delivery pipe out of the well; in the past, the public fishing cone was often used to carry out the operation according to the conventional method. Salvage means to tap the male cone into the inner eye of the water delivery pipe, but because of the limited friction between the male cone and the inner wall of the pipe eye, the male cone often slips off; sometimes once there is an obstruction in the pipe eye, the male cone is difficult to tap into make it impossible to salvage

When the water delivery steel pipe in the well cannot be salvaged, the water source well is often scrapped, which not only causes certain economic losses, but also may affect the normal water use of industries and residents.

Images