A kind of salvage equipment and manufacturing method for water delivery steel pipes in water source wells
A technology for water source wells and steel pipes, which is applied to earth-moving drilling, wellbore/well components, etc., can solve the problems of scrapping water source wells, economic losses, and difficulty in raising water wells for water pipes, and achieves the effect of simple device structure and convenient use.
Inactive Publication Date: 2018-05-29
山东省煤田地质局第四勘探队
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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.
Method used
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[0055] Example: Salvage of the water delivery pipes of the water source well in the dormitory area of Chazhuang Coal Mine. The water source well in the dormitory of Chazhuang Mine was put into use in 1987. Use a submersible pump for water supply. The depth of the water source well is 352m, the inner diameter of the well wall pipe is 273mm, and the water delivery pipe in the well is Φ89×4mm seamless steel pipe. When it was found that there was no water supply in the well, when the water delivery pipe was about to be raised, it was found that the water delivery pipe was stuck and blocked. After pulling it out forcefully, it was found that the water delivery pipeline was disconnected at a depth of 57m, and the bolts at the disconnected place were rusted and broken. According to the analysis, the remaining lower part of the pipeline may be stuck by something and difficult to pull out. After investigation, it was found that small pipe wrench, wrench and other hardware tools and...
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Abstract
The invention discloses a fishing equipment and a manufacturing method for water delivery steel pipes in water source wells, which include a rotary pressurized lifting system and a fishing device. There is an upwardly inclined top piece; rotary pressurized lifting system, including lifting device, drill pipe, core drilling rig, hydraulic jack, the lifting device is connected with the top of the drill pipe, the bottom of the drill pipe is connected with the overshot, and the drill pipe passes through the core drilling rig It is driven to rotate, and the hydraulic jack provides upward pressure for the drill pipe; the top of the salvage steel pipe is provided with a circular steel plate. The present invention disposes of the clamping objects between the water delivery steel pipe in the well and the well wall of the water source well through the salvage device, relieves the squeezing force between the water delivery steel pipe and the well wall pipe or the well wall, and removes the accidental water delivery steel pipe through the rotary lifting device. Salvage it.
Description
technical field [0001] The invention relates to fishing equipment and a manufacturing method for water delivery steel pipes in water source wells, belonging to the field of maintenance of water supply equipment and facilities in industrial and civil water source wells. 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 out o...
Claims
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IPC IPC(8): E21B31/16B23P15/00
Inventor 徐志强潘光明曹相东邱法林王伟张海勇赵锦华邹文涛郭海林
Owner 山东省煤田地质局第四勘探队