CN217001755U

CN217001755U - Reverse circulation flushing wellbore fishing tool for horizontal well

Info

Publication number: CN217001755U
Application number: CN202220961054.4U
Authority: CN
Inventors: 冯晓玲; 万建成
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-07-19
Anticipated expiration: 2032-04-24

Abstract

The utility model discloses a fishing tool for a reverse circulation flushing shaft of a horizontal well, which relates to the technical field of oilfield underground fishing and comprises a through well pipe body, wherein an installation box is fixedly installed at the top of the through well pipe body, a filter screen is arranged in the installation box, installation blocks are fixedly installed on two sides of the filter screen, and a third sliding groove is formed in each installation block, and the fishing tool has the beneficial effects that: through the inside of placing the install bin with the installation piece, accomplish the installation of filter screen, promote the arm-tie after that and drive the connecting plate and remove, can drive the limiting plate removal of connecting plate one side, move the inside of card income spacing groove through the limiting plate, can accomplish the spacing work of filter screen, utilize the filter work that the filter screen can accomplish rivers, prevent that the cubic from entering into the pump body through rivers, the practicality has been improved, can drive the slider and slide in the inside of third spout when the connecting plate removes simultaneously, it is spacing to utilize the slider can accomplish the slip of connecting plate, stability is improved.

Description

Reverse circulation flushing wellbore fishing tool for horizontal well

Technical Field

The utility model relates to the technical field of oilfield underground fishing, in particular to a fishing tool for a horizontal well reverse circulation flushing shaft.

Background

In the production process of the horizontal well, when falling objects such as a well cementation blind plate, a small underground bolt and the like are drilled, a certain amount of block falling objects with larger volume are generated in the horizontal section. And the block-shaped falling objects directly influence other procedures of the horizontal well construction operation and normal well completion work. At present, the conventional sand backflushing technology is adopted to salvage the block falling objects, and because the pipe column is an inner wall with the same diameter and the discharge capacity of the pump truck is limited, the larger blocks (falling objects) cannot be flushed out of a shaft. There is no more effective fishing tool to handle such horizontal well drops.

According to application number CN 201020685134.9's a horizontal well reverse circulation washes fishing tool, wherein utilize in the junk is washed into the drifting pipe by the flush fluid, because the inner diameter of inner tube is little fast, the junk gets into the drifting pipe through the inner tube, and the drifting pipe internal diameter is big, and liquid slows down in flowing into the drifting pipe to in washing the annular space between inner tube and the drifting pipe with cubic junk. After the construction of the back flush drifting is completed, the pipe column is lifted out, the falling objects are brought to the ground together, and the falling objects are salvaged, but the falling objects in the interior can enter the pump body along with water flow when the water flow is too large due to the fact that the mode is used, damage is caused to the pump body, meanwhile, the falling objects in the interior float in the pipe due to the fact that the water flow flows, the effect of the device is influenced, and therefore the well shaft fishing tool for washing the well shaft through the reverse circulation of the horizontal well is provided.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a fishing tool for a horizontal well reverse circulation flushing shaft, which solves the problems in the background technology.

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a horizontal well reverse circulation washes pit shaft fishing tool, includes logical well pipe body, the top fixed mounting of logical well pipe body has the install bin, the inside of install bin is provided with the filter screen, the equal fixed mounting in both sides of filter screen has the installation piece, the third spout has been seted up to the inside of installation piece, the inside sliding connection of third spout has the slider, the top fixed mounting of slider has the connecting plate, one side fixed mounting of connecting plate has the limiting plate, the top fixed mounting of connecting plate has the arm-tie, the spacing groove has been seted up to the inside of install bin, limiting plate and spacing groove looks adaptation.

Preferably, two drainage plates are fixedly mounted inside the mounting box.

Preferably, the delivery outlet has been seted up to one side of drifting pipe body, two second spouts have been seted up to the inside of drifting pipe body, two the equal sliding connection in inside of second spout has first rotation piece, the outside of first rotation piece is rotated and is connected with the connecting rod.

Preferably, the inside fixed mounting of second spout has reset spring, reset spring's one end and first turning block fixed connection, the inside of second spout is provided with the gag lever post, the gag lever post runs through reset spring.

Preferably, the inside of drifting pipe body rotates and is connected with two baffles, two first spout has all been seted up at the top of baffle, the inside sliding connection of first spout has the second turning block, the second turning block rotates with the connecting rod and is connected.

The utility model provides a fishing tool for a horizontal well reverse circulation flushing shaft, which has the following beneficial effects:

1. this well bore fishing tool is washed in horizontal well reverse circulation, through the inside of placing the install bin with the installation piece, accomplish the installation of filter screen, promote the arm-tie after that and drive the connecting plate and remove, can drive the limiting plate removal of connecting plate one side, the inside of limiting groove is gone into to the card through the limiting plate removal card, can accomplish the spacing work of filter screen, utilize the filter screen can accomplish the filtering work of rivers, prevent that the cubic from entering into the pump body through rivers, the practicality is improved, can drive the slider and slide in the inside of third spout when the connecting plate removes simultaneously, it is spacing to utilize the slider can accomplish the slip of connecting plate, stability has further been improved.

2. This horizontal well reverse circulation washes pit shaft fishing tool, when the cubic enters into the drifting pipe body inside, the weight that utilizes the junk drives the baffle and rotates, it slides in the inside of first spout to drive the second turning block when the baffle rotates, can adjust the angle of connecting rod from this, it can drive first turning block and remove to utilize the connecting rod to rotate, can drive reset spring's one end from this and remove, when the junk falls into the ring channel, it removes to utilize reset spring's resilience force to drive first turning block, can drive the baffle from this and reset, block the junk, prevent that rivers from floating in intraductal when too big, the result of use and the practicality of device have been improved.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;

fig. 4 is an enlarged view of the utility model at B in fig. 1.

In the figure: 1. a drift tube body; 2. an output port; 3. installing a box; 4. a first rotating block; 5. a connecting rod; 6. a second turning block; 7. a first chute; 8. a baffle plate; 10. a second chute; 11. a limiting rod; 12. a return spring; 13. mounting blocks; 14. pulling a plate; 15. a slider; 16. a drainage plate; 17. a limiting plate; 18. a limiting groove; 19. a connecting plate; 20. a third chute; 21. and (5) filtering the screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

The first embodiment is as follows:

referring to fig. 1 and 4, a horizontal well reverse circulation flushing wellbore fishing tool comprises a through well pipe body 1, a mounting box 3 is fixedly mounted at the top of the through well pipe body 1, a filter screen 21 is arranged inside the mounting box 3, the mounting of the filter screen 21 is completed by placing a mounting block 13 inside the mounting box 3, the filter screen 21 can be used for filtering water flow, the mounting blocks 13 are fixedly mounted at two sides of the filter screen 21, a third chute 20 is formed inside the mounting block 13, a sliding block 15 is slidably connected inside the third chute 20, the sliding limiting of a connecting plate 19 can be completed by using the sliding block 15, the connecting plate 19 is fixedly mounted at the top of the stable sliding block 15, the sliding block 15 is driven to slide inside the third chute 20 when the connecting plate 19 moves, a limiting plate 17 is fixedly mounted at one side of the connecting plate 19, the connecting plate 19 moves to drive the limiting plate 17 at one side to move, the top fixed mounting of connecting plate 19 has arm-tie 14, can drive connecting plate 19 through promoting arm-tie 14 and remove, and spacing groove 18 has been seted up to the inside of install bin 3, and limiting plate 17 and limiting groove 18 looks adaptation can accomplish the spacing work of filter screen 21 through going into limiting plate 17 card into the inside of limiting groove 18, and the inside fixed mounting of install bin 3 has two drainage plates 16, utilizes drainage plate 16 can be with the inside of cubic drainage back-through well casing body 1.

Example two:

referring to fig. 1 and 3, a return spring 12 is fixedly installed inside the second chute 10, one end of the return spring 12 is fixedly connected with the first rotating block 4, a limiting rod 11 is installed inside the second chute 10, the limiting rod 11 can be used to complete the sliding limit of the first rotating block 4, the stability is further increased, the limiting rod 11 penetrates through the return spring 12, the first rotating block 4 can be used to move to drive one end of the return spring 12 to move, the output port 2 is arranged on one side of the shaft pipe body 1, the two second chutes 10 are arranged inside the shaft pipe body 1, the first rotating block 4 is slidably connected inside the two second chutes 10, when a falling object falls into the annular groove, the first rotating block 4 is driven to move by the resilience force of the return spring 12, so that the baffle 8 can be driven to reset, the falling object is blocked, the use effect and the practicability of the device are improved, the outside of first turning block 4 is rotated and is connected with connecting rod 5, utilize connecting rod 5 to rotate and can drive first turning block 4 and remove, the inside of drifting pipe body 1 is rotated and is connected with two baffles 8, when the cubic enters into the inside of drifting pipe body 1, the weight that utilizes the junk drives baffle 8 and rotates, first spout 7 has all been seted up at the top of two baffles 8, the inside sliding connection of first spout 7 has second turning block 6, it slides in the inside of first spout 7 to drive second turning block 6 when baffle 8 rotates, second turning block 6 rotates with connecting rod 5 and is connected, utilize the angle that second turning block 6 slides and can adjust connecting rod 5.

In conclusion, when the fishing tool for the horizontal well reverse circulation flushing shaft is used, firstly, the installation block 13 is placed inside the installation box 3 to complete installation of the filter screen 21, then the pulling plate 14 is pushed to drive the connecting plate 19 to move, the limiting plate 17 on one side of the connecting plate 19 can be driven to move, the limiting plate 17 is moved to be clamped into the limiting groove 18, limiting work of the filter screen 21 can be completed, filtering work of water flow can be completed by using the filter screen 21, the sliding block 15 is driven to slide inside the third sliding groove 20 by using the connecting plate 19 to move, sliding limiting of the connecting plate 19 can be completed by using the sliding block 15, when a block enters the through-well pipe body 1, the block falls to the top of the baffle 8, the weight of a falling object is used for driving the baffle 8 to rotate, the second rotating block 6 is driven to slide inside the first sliding groove 7 when the baffle 8 rotates, and the angle of the connecting rod 5 can be adjusted, utilize connecting rod 5 to rotate and can drive first rotation piece 4 and remove, can drive reset spring 12's one end from this and remove, when the junk falls into the ring channel, utilize reset spring 12's resilience force to drive first rotation piece 4 and remove, can drive baffle 8 from this and reset, accomplish the work that blocks of junk.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a horizontal well reverse circulation washes pit shaft fishing tool, includes logical well pipe body (1), its characterized in that: the top fixed mounting of drifting pipe body (1) has install bin (3), the inside of install bin (3) is provided with filter screen (21), the equal fixed mounting in both sides of filter screen (21) has installation piece (13), third spout (20) have been seted up to the inside of installation piece (13), the inside sliding connection of third spout (20) has slider (15), the top fixed mounting of slider (15) has connecting plate (19), one side fixed mounting of connecting plate (19) has limiting plate (17), the top fixed mounting of connecting plate (19) has arm-tie (14), spacing groove (18) have been seted up to the inside of install bin (3), limiting plate (17) and spacing groove (18) looks adaptation.

2. The reverse circulation flushing wellbore fishing tool for the horizontal well according to claim 1, wherein: two drainage plates (16) are fixedly arranged in the installation box (3).

3. The reverse circulation flushing wellbore fishing tool for the horizontal well according to claim 2, characterized in that: delivery outlet (2) have been seted up to one side of drifting pipe body (1), two second spouts (10), two have been seted up to the inside of drifting pipe body (1) the equal sliding connection in inside of second spout (10) has first rotation piece (4), the outside of first rotation piece (4) is rotated and is connected with connecting rod (5).

4. The reverse circulation flushing wellbore fishing tool for the horizontal well according to claim 3, wherein: the inside fixed mounting of second spout (10) has reset spring (12), the one end and first rotation block (4) fixed connection of reset spring (12), the inside of second spout (10) is provided with gag lever post (11), gag lever post (11) run through reset spring (12).

5. The reverse circulation flushing wellbore fishing tool for the horizontal well according to claim 1, wherein: the inside of drifting pipe body (1) rotates and is connected with two baffles (8), two first spout (7) have all been seted up at the top of baffle (8), the inside sliding connection of first spout (7) has second turning block (6), second turning block (6) rotate with connecting rod (5) and are connected.