Conduit fishing device and fishing method

A fishing device and conduit technology, which is applied in the direction of earthwork drilling, wellbore/well components, etc., can solve problems such as difficulty in touching the conduit opening, self-weight that cannot meet the requirements, and high mud specificity, so as to improve the working range and improve Salvage effect, effect of improving connection strength

Pending Publication Date: 2019-03-08
浙江省地矿建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common methods of salvaging catheters are: noose method, hook method, etc.; these methods are unsatisfactory in the process of salvaging the fallen catheters, because the outer edge of the threaded catheter mouth is very small, it is difficult to wor

Method used

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  • Conduit fishing device and fishing method
  • Conduit fishing device and fishing method
  • Conduit fishing device and fishing method

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Embodiment Construction

[0048] like Figure 1 to Figure 7 As shown, it is a catheter fishing device of the present invention, including a base 1 and at least four fishing heads 3, a lifting head 2 is arranged at the center of the top surface of the base 1, and a groove 22 is arranged on the lifting head 2 facing upwards. The groove 22 is rotatably connected with a rotating block 23. The design of the rotating block 23 can connect the base 1 with the external hoisting equipment through a cable, so as to meet the fishing needs of different depths and improve the working range of the fishing device. The design of the groove 22 can meet the The installation needs of different size rotating block 23.

[0049] The fishing head 3 is evenly arranged around the base 1, and the fishing head 3 is provided with a clamping groove 7 facing downward, and the first limiting groove 15 is evenly distributed on the inner surface of the clamping groove 7 from top to bottom, and the level of the same side is At least th...

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Abstract

The invention discloses a conduit fishing device and fishing method. The conduit fishing device comprises a base and at least four fishing heads, a hoisting head is arranged on the center of the top face of the base, the fishing heads are uniformly arranged around the base, first support arms are uniformly arranged on the side face of the outside circumference of the base, second support arms arefixedly connected to the top faces of the fishing heads through fixing rods, the first support arms are movably connected with the second support arms through telescopic mechanisms and horizontal support rods, and the horizontal support rods are uniformly distributed around the telescopic mechanisms. The fishing method comprises the steps of base machining, fishing head machining, machining of thefirst support arms and the second support arms machining, piece installation and conduit fishing. According to the conduit fishing device and fishing method, the structure is simple, the practicability is high, the spacing between the fishing heads and the base can be adjusted according to the bores of different conduits, fishing of the conduits with different bores is achieved, the usage range and the flexibility of the conduit fishing device are expanded and improved, and meanwhile, manufacturing is convenient, the operation is simple and convenient, and the success rate is extremely high.

Description

technical field [0001] The invention relates to a catheter fishing device and a fishing method. Background technique [0002] During the concrete pouring process of the bored pile body, sometimes the conduit will fall into the pile hole due to old wear of the threaded fastener or careless construction, etc. Generally, steel wire rope or steel bar is used to remove the casing for salvage conduit. The common methods of salvaging catheters are: noose method, hook method, etc.; these methods are unsatisfactory in the process of salvaging the fallen catheters, because the outer edge of the threaded catheter mouth is very small, it is difficult to work in the process, and the luck factor is too large. The specific gravity of the mud is too large, and the common method cannot meet the requirements due to its own weight, and it is difficult to touch the conduit opening during the lowering process. Contents of the invention [0003] The purpose of the present invention is to provi...

Claims

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Application Information

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IPC IPC(8): E21B31/12
CPCE21B31/12
Inventor 姚鑫林黄运平车国喜杨俞
Owner 浙江省地矿建设有限公司
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