CN216110617U

CN216110617U - Filter fishing device in ground soaking process drill hole

Info

Publication number: CN216110617U
Application number: CN202122818765.4U
Authority: CN
Inventors: 王冉林; 罗永红; 张才敏; 王瀚
Original assignee: Hunan Zhonghe Exploration Co ltd
Current assignee: Hunan Zhonghe Exploration Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-03-22
Anticipated expiration: 2031-11-17

Abstract

The utility model provides a filter fishing device in ground soaks technology drilling, includes main part and links, the upper end of main part is equipped with the joint, the main part middle part side direction is opened porosely, and downthehole top is equipped with the overhead gage, and the below is equipped with down the baffle, it is rotatable to link the dress between two baffles to link through spring and overhead gage, under the normal condition, the link is the open mode, and the spring is in the open state this moment. The utility model can realize the quick salvage of the in-situ leaching uranium mining filter, has low cost, simple structure and convenient operation, reduces the problem that the drill hole can not be used due to the problem of the filter, and prolongs the service life of the drill hole of the in-situ leaching process.

Description

Filter fishing device in ground soaking process drill hole

Technical Field

The utility model relates to a fishing device for a filter in a drill hole of an underground leaching process.

Background

The ground leaching process drill hole is the only channel for metal mining of the ground leaching sandstone type uranium mine. The channel is composed of a casing, a filter and a sand setting pipe from top to bottom, is a working channel for forming hydraulic connection between the surface pipeline and the water-containing layer, and is called a production well. In the drilling construction process, cement slurry is required to be filled in an annular space between the inner wall of an open hole drill hole and the outer wall of a drill hole casing pipe for well cementation and sealing. Therefore, the interior of the uranium mining casing pipe and each layer of underground water system can be completely isolated, and the ore layer only passes through the filter and the interior of the casing pipe, so that the hydraulic smoothness is kept, and the ore layer returns to the ground surface, thereby achieving the purpose of mining the target layer metal.

Since 2000 years, a large number of ground-immersed sandstone-type uranium mines are mined domestically, gravel-filled drilling structures are created and perfected, and the gravel-filled drilling structures are continuously perfected and still are one of mainstream drilling structures so far. From 2011, the drilling structure of the replaceable built-in filter is carried out in the ground leaching mine in a successive manner, bare holes are drilled, then the sleeve is installed at the upper part of the ore bed, after reverse grouting, the built-in filter is installed to the position of the ore bed, and mining of the ore bed section is carried out. The filter (commonly called as a floral tube) is manufactured by punching original plastic tubes in a staggered arrangement mode, and the punching ensures the strength of the whole structure of the filter, is also beneficial to fully extracting water by the filter and improves the layer section efficiency of mining. The ore bed and the part between the lower part of the ore bed and the filter of the drilling structure with the built-in filter are not treated and are in an original stratum state, and at the initial stage of hole forming, the stratum is stable, the settled sand is less and is not influenced to water flow and exploitation, but the stratum is unstable and the settled sand is increased after long-time water flow scouring, and a series of mineral residues and the like cause filter blockage, so that the operation of the whole drilling hole is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a fishing device for a filter in a ground soaking process drill hole, which can solve the problems of position change, filter damage and replacement of the filter caused by long-term use and influence on the normal operation of the whole drill hole due to the occurrence of problems of the filter.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides a filter fishing device in ground soaks technology drilling, includes main part and links, the upper end of main part is equipped with the joint, the main part middle part side direction is opened porosely, and downthehole top is equipped with the overhead gage, and the below is equipped with down the baffle, it is rotatable to link the dress between two baffles to link through spring and overhead gage, under the normal condition, the link is the open mode, and the spring is in the open state this moment.

Further, the main body is a hollow steel pipe.

Further, the joint is a threaded joint and is used for connecting with a drill rod.

Further, the holes are rectangular holes.

Furthermore, the upper baffle is a trapezoid body with one wide end and one narrow end, so that the hanging buckle can be conveniently retracted into the hole.

Further, the lower baffle is a rectangular strip and used for blocking the hanging buckle.

Further, the upper baffle and the lower baffle are fixed on the main body through welding.

The technical principle of the utility model is as follows:

the device is connected with a drill rod and is placed to the position where the filter is located, due to the diameter limitation of the pipe wall, the hanging buckle is extruded and contracted in the device, the spring is in an elastic potential energy state at the moment, after the hanging buckle reaches a designated position, the hanging buckle is ejected out of the device and clamped in an opening of the pipe wall of the filter, and the device and the filter are fixed together at the moment, so that the filter is salvaged.

The method for fishing the filter by using the device comprises the following steps:

connect the drilling rod with the device, transfer filter actual position top, continue down advancing device position, originally open string knot because the tapering of pipe wall is in being extrudeed withdrawal device, when meetting the trompil on the pipe wall, the lateral extrusion force of string knot department disappears, the elastic action of inside spring causes the string knot side direction to pop out, and the card is downthehole at the filter pipe wall, the baffle keeps off under the string knot bottom prevents that the string knot from continuing to rotate, make both firmly fixed, promote the drilling rod this moment, propose holistic set of device and filter drilling, accomplish fishing work.

The utility model has the beneficial effects that:

the fast salvage of the in-situ leaching uranium mining filter is realized, the cost price is low, the structure is simple, the operation is convenient, the problem that drilling holes caused by the filter problem cannot be used is reduced, and the service life of the in-situ leaching process drilling holes is prolonged.

Drawings

FIG. 1 is a left side view of an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A' of the embodiment of FIG. 1;

FIG. 3 is a left side view of the embodiment of FIG. 1 rotated 90 clockwise;

FIG. 4 is a cross-sectional view of the embodiment of FIG. 3 taken along line F-F';

in the figure: 1. the screw thread connector comprises a screw thread connector body 2, a main body 3, an upper baffle plate 4, a spring 5, a hanging buckle 6 and a lower baffle plate 6.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

Examples

Referring to fig. 1-4, the filter fishing device in the ground leaching process drill hole comprises a main body 2 and a hanging buckle 5, wherein a screw thread joint 1 is arranged at the upper end of the main body 2, a rectangular hole is formed in the side direction of the middle part of the main body 2, an upper baffle 3 is arranged above the hole, a lower baffle 6 is arranged below the hole, the hanging buckle 5 is arranged between the two baffles and can rotate and is connected with the upper baffle 3 through a spring 4, and in a normal state, the hanging buckle 5 is in an open state, and at the moment, the spring is in an open state.

In this embodiment, the main body 2 is a hollow steel pipe.

In this embodiment, the hanging buckle 5 is in the shape of a sickle head.

In this embodiment, the upper baffle 3 is a trapezoid with a wide end and a narrow end, so that the hanging buckle 5 can be conveniently retracted into the hole.

In this embodiment, the lower baffle 6 is a rectangular strip for blocking the hanging buckle 5 from entering the main body 2.

In this embodiment, the upper baffle 3 and the lower baffle 6 are fixed to the main body 2 by welding.

In this embodiment, the threaded joint 1 is used for connecting with a drill rod.

The technical principle of the embodiment is as follows:

The length of the device body of the embodiment is 1100mm, and the diameter is 50 mm; the hanging buckle 5 is 45mm long, the unfolding diameter is 65mm, and the device is made of iron materials; the diameter of the upper baffle 3 is 50mm, and the diameter of the lower baffle 6 is 50 mm; the spring 4 is 25mm in length and 6mm in diameter.

connect the drilling rod with the device, transfer the filter position, continue to transfer to the filter inside, in the device trompil was withdrawed to the link 5 receives the extrusion, when meetting the trompil on the filter pipe wall, spring 4 popped the card in the filter trompil with link 5, promoted the drilling rod, and link 5 is blockked in order to prevent that it continues to rotate by baffle 6 down, proposes drilling with whole equipment together with the filter, accomplishes and salvages.

Claims

1. The utility model provides a filter fishing device in ground soaks technology drilling which characterized in that: including the main part with hang and detain, the upper end of main part is equipped with the joint, the main part middle part side direction is opened porosely, and the downthehole top is equipped with the overhead gage, and the baffle is down equipped with to the below, it is rotatable to hang the knot dress between two baffles to be connected through spring and overhead gage, under the normal condition, hang and detain for open mode, the spring is in the state of opening this moment.

2. The in-situ leaching process in-hole filter fishing device of claim 1, wherein: the main body is a hollow steel pipe.

3. The in-situ leaching process in-hole filter fishing device according to claim 1 or 2, wherein: the joint is a threaded joint.

4. The in-situ leaching process in-hole filter fishing device according to claim 1 or 2, wherein: the holes are rectangular holes.

5. The in-situ leaching process in-hole filter fishing device according to claim 1 or 2, wherein: the upper baffle is a trapezoid body with a wide end and a narrow end.

6. The in-situ leaching process in-hole filter fishing device according to claim 1 or 2, wherein: the lower baffle is a rectangular strip.

7. The in-situ leaching process in-hole filter fishing device according to claim 1 or 2, wherein: the upper baffle and the lower baffle are fixed on the main body through welding.