阅读说明：本技术 一种井内打捞装置 (Fishing device in well ) 是由 王宗明 魏志明 乔晖文 陈书阁 于 2021-08-13 设计创作，主要内容包括：本发明公开了一种井内打捞装置,包括竖向设置的筒体,所述筒体的下端环向间隔设有多个爪齿,每个所述爪齿与所述筒体的下端摆转连接,所述筒体内设有控制杆,每个所述爪齿通过连接件与所述控制杆的下端连接,在外力作用下,向下驱动所述控制杆以带动多个所述爪齿同步摆转至张开以将井内掉落物罩设在多个所述爪齿之间,或向上驱动所述控制杆以带动多个所述爪齿同步摆转至合拢以将所述井内掉落物抓起,如此将该井内打捞装置下入到井内,先使得多个爪齿展开,待井内打捞装置沉底后,上提控制杆,此时多个爪齿转动至靠拢并将井底的井内掉落物抓起,再向上从井内提出井内打捞装置即可将井内掉落物取出。(The invention discloses an in-well fishing device, which comprises a vertically arranged barrel, wherein the lower end of the barrel is annularly provided with a plurality of claw teeth at intervals, each claw tooth is in swinging connection with the lower end of the barrel, a control rod is arranged in the cylinder body, each claw tooth is connected with the lower end of the control rod through a connecting piece, under the action of external force, the control rod is driven downwards to drive the claw teeth to synchronously swing and rotate to open so as to cover the falling objects in the well among the claw teeth, or the control rod is driven upwards to drive the claw teeth to synchronously swing and rotate to close so as to grab the fallen objects in the well, thus, the salvaging device in the well is put into the well, the plurality of claw teeth are firstly unfolded, after the salvaging device in the well sinks, and lifting the control rod, rotating the plurality of claw teeth to be close to each other at the moment and picking up the falling objects in the well at the bottom of the well, and lifting the fishing device in the well upwards from the well to take out the falling objects in the well.)

1. The utility model provides a fishing device in well, its characterized in that, barrel (1) including vertical setting, the lower extreme hoop interval of barrel (1) is equipped with a plurality of claw teeth (2), every claw tooth (2) with the lower extreme pendulum of barrel (1) changes and is connected, be equipped with control lever (3) in barrel (1), every claw tooth (2) pass through connecting piece (4) with the lower extreme of control lever (3) is connected, under the exogenic action, the underdrive control lever (3) are in order to drive a plurality of claw tooth (2) are swung in step and are rotated to opening and establish a plurality ofly with the thing cover that drops in the well between claw tooth (2), or upwards drive control lever (3) are in order to drive a plurality of claw tooth (2) are swung in step and are rotated to fold in order to with the thing that drops in the well picks up.

2. A fishing device in a well as claimed in claim 1, characterized in that the claw tooth (2) is in the shape of an isosceles triangle, the bottom side of the claw tooth (2) faces upwards, and the middle part of the bottom side is rotatably connected with the lower end of the barrel body (1).

3. A fishing device in a well according to claim 2, characterized in that the cross-section of the barrel (1) is circular and the plurality of claw teeth (2) are evenly distributed at intervals circumferentially at the lower end of the barrel (1).

4. An in-well fishing device according to claim 2, characterized in that the cross section of the end of the barrel (1) is square, and the claw teeth (2) are provided with four, and the four claw teeth (2) are respectively arranged on four sides of the lower end of the barrel (1).

5. A fishing device in a well according to any of claims 1-4, characterized in that the connecting member (4) is a rod body, and one end of the connecting member is connected with the upper end of the inner side of the claw tooth (2), and the other end of the connecting member is vertically and rotatably connected with the lower end of the control rod (3).

6. A fishing device in a well according to claim 5, characterized by further comprising a guide member (5) arranged inside the barrel body (1), wherein a guide hole penetrating up and down and located in the middle of the inside of the barrel body (1) is formed in the guide member (5), the control rod (3) vertically penetrates through the guide hole, and a first hanging ring (31) is arranged at the upper end of the control rod (3).

7. A fishing device in a well according to claim 5, characterized in that the upper end of the barrel (1) is provided with a plurality of second suspension loops (11) at circumferential intervals.

Technical Field

The invention belongs to the field of clamping jaws, and particularly relates to an in-well fishing device.

Background

The falling objects in the well are common in the well drilling process and are high in harmfulness, particularly the falling objects in the well such as iron products and the like, if salvage treatment is not carried out, the falling objects are simply extruded to the well wall by using a waste drill bit, the falling objects can fall again, along with the fact that the stratum of the well is deeper and harder, the falling objects can be more and more difficult to treat, the simple and trouble-saving method can seriously harm the safety in the well, and particularly damage to the drill bit and influence on the drilling speed.

In the well falling object accident, different treatment modes can be selected according to the well depth, the size, the weight and the shape of the falling object, and the common treatment methods comprise the following steps:

1. grinding the shoe: in the case of unknown bottom hole junk, the junk can be ground by a grinding shoe;

2. strong magnetism: if the falling object is a small tool or a roller, the strong magnetism can be well released. However, it should be noted that the pressure should not be too high after bottom detection to prevent the falling objects from pressing into the ground and damaging the strong magnetism, and the rotary disc or the rotary disc shackle should not be started to prevent the falling objects from falling into the well again.

3. A salvaging basket: the salvaging basket can be drilled down along with a drilling tool, and the fallen objects are arranged in the salvaging basket by a steel wire basket net which is vertical and horizontal.

Although the fishing modes are effective in use, the common defect is that the whole course needs the matching of a drilling tool, the time is wasted when the drilling tool is started and stopped in practice, particularly, a deep well needs one day when the drilling tool is started and stopped once, and the object to be fished is a thing which cannot be seen, all operations are completely empirical, and the drilling tool needs to be repeatedly started and stopped for many times to be fished successfully.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide an in-well fishing device which is simple in structure and convenient to use.

In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a fishing device in well, includes the barrel of vertical setting, the lower extreme hoop interval of barrel is equipped with a plurality of pawl teeth, every the pawl tooth with the lower extreme pendulum of barrel changes and is connected, be equipped with the control lever in the barrel, every the pawl tooth pass through the connecting piece with the lower extreme of control lever is connected, under the exogenic action, the downward drive the control lever is in order to drive a plurality of the pawl tooth is swung and is changeed to opening in step and establish a plurality of with the thing that drops in the well cover between the pawl tooth, or the upward drive the control lever is in order to drive a plurality of the pawl tooth is swung in step and is changeed to foldingly in order to with the thing that drops in the well picks up.

The beneficial effects of the above technical scheme are that: so go into this fishing device in well in with, make a plurality of pawl tooth expand earlier, treat that fishing device in the well sinks the end after, lift the control lever, a plurality of pawl teeth rotate to drawing close and grab the thing that falls in the well in the shaft bottom this moment, and upward lifting fishing device in can taking out the thing that falls in the well from the well again.

In the technical scheme, the claw teeth are isosceles triangles, the bottom edges of the claw teeth face upwards, and the middle parts of the bottom edges of the claw teeth are rotatably connected with the lower end of the cylinder body.

The beneficial effects of the above technical scheme are that: the utility model has simple structure and good grabbing effect.

In the technical scheme, the cross section of the cylinder body is circular, and the plurality of claw teeth are uniformly distributed at intervals in the circumferential direction at the lower end of the cylinder body.

The beneficial effects of the above technical scheme are that: the structure is simple and is matched with the shape of a drilling well.

In the technical scheme, the cross section of the end of the cylinder body is square, the number of the claw teeth is four, and the four claw teeth are respectively arranged on four sides of the lower end of the cylinder body.

The beneficial effects of the above technical scheme are that: the structure is simple.

In the technical scheme, the connecting piece is a rod body, one end of the connecting piece is connected with the upper end of the inner side of the claw tooth, and the other end of the connecting piece is vertically connected with the lower end of the control rod in a swinging and rotating mode.

The beneficial effects of the above technical scheme are that: the structure is simple.

Still including setting up among the above-mentioned technical scheme the inside guide of barrel, be equipped with on the guide and run through from top to bottom and be located the guiding hole of middle part in the barrel, the control lever is vertical to be passed the guiding hole, just the upper end tip of control lever is equipped with first link.

The beneficial effects of the above technical scheme are that: the first suspension loop is used for being connected with the control rope 6, and the control rope 6 is used for controlling the control rod outside the well.

In the technical scheme, a plurality of second hanging rings are arranged at intervals in the circumferential direction at the upper end of the cylinder body.

The beneficial effects of the above technical scheme are that: the second suspension loop is used for being connected with the lifting rope 7 in a hanging mode, and the lifting rope 7 is used for lifting the barrel.

Drawings

FIG. 1 is a side cross-sectional view of a plurality of dogs of a fishing assembly in a well according to an embodiment of the present invention shown deployed;

FIG. 2 is a view of the embodiment of the present invention showing the deployment of a plurality of dogs of the fishing apparatus;

FIG. 3 is a side cross-sectional view of a plurality of dogs of the fishing apparatus in a well being closed according to an embodiment of the present invention;

FIG. 4 is a drawing of the fishing apparatus, lifting rope and control rope in the well according to an embodiment of the present invention;

FIG. 5 is a drawing of the guide, lever and barrel assembly of an embodiment of the present invention.

In the figure: 1 cylinder, 11 second links, 2 claw teeth, 3 control levers, 31 first links, 4 connecting pieces, 5 guide pieces, 6 control ropes, 7 lifting ropes.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

As shown in fig. 1-3, the embodiment provides a fishing device in a well, which includes a vertically arranged barrel 1, a plurality of claw teeth 2 are arranged at an interval in a circumferential direction at the lower end of the barrel 1, each claw tooth 2 is connected with the lower end of the barrel 1 in a swinging manner, a control rod 3 is arranged in the barrel 1, each claw tooth 2 is connected with the lower end of the control rod 3 through a connecting piece 4, under the action of an external force, the control rod 3 is driven downwards to drive the plurality of claw teeth 2 to swing and open synchronously so as to cover objects falling in the well between the plurality of claw teeth 2, or the control rod 3 is driven upwards to drive the plurality of claw teeth 2 to swing and close synchronously so as to grab the objects falling in the well, so that the fishing device in the well is put into the well, the plurality of claw teeth are firstly unfolded, after the fishing device in the well sinks to the bottom, the control rod is lifted, at this time, the plurality of claw teeth rotate to close and grab the objects falling in the well, and lifting the fishing device in the well upwards to take out the falling objects in the well.

In the technical scheme, the claw teeth 2 are isosceles triangles, the bottom edges of the claw teeth 2 face upwards, the middle parts of the bottom edges of the claw teeth are rotatably connected with the lower end of the cylinder body 1, the structure is simple, and the grabbing effect is good.

In the technical scheme, the cross section of the cylinder body 1 is circular, the claw teeth 2 are uniformly distributed at the circumferential interval at the lower end of the cylinder body 1, and the structure is simple and is matched with the shape of a well.

In the technical scheme, the cross section of the end of the cylinder body 1 is square, four claw teeth 2 are arranged, the four claw teeth 2 are respectively arranged on four sides of the lower end of the cylinder body 1, and the structure is simple.

In the technical scheme, the connecting piece 4 is a rod body, one end of the connecting piece is connected with the upper end of the inner side of the claw teeth 2 (can be vertically and fixedly connected or can be vertically swung and rotated), the other end of the connecting piece is vertically swung and rotated with the lower end of the control rod 3, and the connecting piece is simple in structure.

As shown in fig. 4, the downhole drilling tool further comprises a guide 5 (the guide may include a ring and a support leg disposed on the periphery of the ring and connected to the inner wall of the cylinder, specifically as shown in fig. 5) disposed inside the cylinder 1, the guide 5 is provided with a guide hole penetrating vertically and located in the middle of the cylinder 1, the control rod 3 vertically penetrates through the guide hole, the upper end of the control rod 3 is provided with a first hanging ring 31, the first hanging ring is used for being connected to a control rope 6, and the control rope 6 controls the control rod outdoors.

In the technical scheme, a plurality of second hanging rings 11 (preferably three or four) are arranged at intervals in the circumferential direction at the upper end of the cylinder body 1, the second hanging rings are used for being hung with the lifting rope 7, and the lifting rope 7 is used for lifting the cylinder body.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.