Drilling fishing socket

Abstract

The utility model relates to the technical field of well drilling, in particular to a well drilling fishing socket. The fishing socket comprises a fishing socket shell, a movable limiting groove is formed in the bottom of the fishing socket shell, a plurality of chucks are rotationally installed in the movable limiting groove, a hydraulic push rod is arranged in the fishing socket shell, and a driving shaft of the hydraulic push rod is in transmission connection with the chucks; according to the device, through a plurality of chucks and a hydraulic push rod, a fish can be efficiently clamped, meanwhile, a linear groove can enhance friction force and keep clamping stability, meanwhile, the device can be suitable for fishes of different sizes and shapes, and the application range is wide; according to the device, the lower pressure can be transmitted to the outer side through the pressure discharge hole in the descending process, and damage to parts caused by pressure accumulation is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a drilling technology field, concretely relates to a drilling fishing barrel. BACKGROUND

[0002] Petroleum and natural gas exploration and production are important components of the global energy industry, with the growing demand for energy, the important position of petroleum and natural gas exploration work is gradually promoted, and among them, drilling is a key step, and its efficiency and accuracy directly determine the extraction of petroleum and natural gas mining results.

[0003] In the drilling process, because the underground environment is mostly high temperature, high pressure environment, the drill bit, pump head and other tools are easy to be damaged, fall off in the operation process, and the drill bit and pump head (the fallen objects can be collectively referred to as fish) are mostly core equipment for excavation, have high economic value, and if left in the well, it will greatly interfere with and damage the subsequent excavation, so it must be fished out, and most of the drilling depth is large, and the diameter is small, so it is difficult to quickly fish out the drill bit or pump head, but it is necessary to select the corresponding fisher according to the shape of the fallen object, and try many times, causing the stagnation and interruption of production. SUMMARY

[0004] The utility model discloses a kind of drilling fishing barrels for the defects and deficiencies of prior art, which can solve the above defects.

[0005] To achieve the above object, the utility model adopts the following technical scheme: it includes fishing barrel shell, movable limiting groove is opened in the bottom of fishing barrel shell, a plurality of chucks are rotatably installed in movable limiting groove, hydraulic push rod is arranged in fishing barrel shell, and the drive shaft of hydraulic push rod is connected with a plurality of chucks.

[0006] Preferably, the top of the plurality of chucks is installed in the top wall inside the movable limiting groove through the pivot.

[0007] Preferably, the drive shaft of the hydraulic push rod is connected with a driving block, the driving block is connected to the middle position of the plurality of chucks through a plurality of driving links around, and the two ends of the driving link are rotatably installed through connecting shaft.

[0008] Preferably, the bottom of the plurality of chucks is provided with a sharp head, and the inclined surface of the sharp head is located on the inner side of the chuck.

[0009] Preferably, the inner side of the chuck is provided with a plurality of straight grooves, and the plurality of straight grooves are cross arranged.

[0010] Preferably, a plurality of row pressure holes are opened on the fishing barrel shell around the position of the movable limiting groove.

[0011] After the above structure, the beneficial effects of the present application are:

[0012] 1. The device can efficiently pick up the fallen fish through several clamps and hydraulic push rods, the linear groove can enhance the friction force and maintain the stability of clamping, and can be suitable for fallen fish of different sizes and shapes, and has wide application range.

[0013] 2. The device can transmit the pressure below to the outside during the descending process through the pressure discharge hole, so as to prevent the pressure from gathering and causing damage to the components. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is the front view of the structure of the present application;

[0015] Fig. 2 is the bottom view of the structure of the present application;

[0016] Fig. 3 is the sectional view of the structure of the present application.

[0017] BRIEF DESCRIPTION OF DRAWINGS

[0018] 1, fishing barrel shell; 2, movable limiting groove; 3, clamp; 4, rotating shaft; 5, driving block; 6, driving link; 7, hydraulic push rod; 8, connecting shaft; 9, sharp head; 10, pressure discharge hole; 11, linear groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0020] Referring to Figs. 1-3 , it comprises a fishing barrel shell 1, the bottom of the fishing barrel shell 1 is provided with a movable limiting groove 2, a plurality of clamps 3 are rotatably installed in the movable limiting groove 2, a hydraulic push rod 7 is arranged in the fishing barrel shell 1, and the driving shaft of the hydraulic push rod 7 is connected to the plurality of clamps 3.

[0021] Referring to Figs. 1-3 , the top of the plurality of clamps 3 is installed in the top wall in the movable limiting groove 2 through the rotating shaft 4; the driving shaft of the hydraulic push rod 7 is connected with the driving block 5, the driving block 5 is connected to the middle position of the plurality of clamps 3 through the plurality of driving links 6 around, and the two ends of the driving link 6 are rotatably installed through the connecting shaft 8.

[0022] As an optimization scheme of the utility model, the hydraulic push rod 7 drives the driving block 5 to move up and down, then the driving link 6 drives the chuck 3 to rotate in the movable limiting groove 2 along the rotating shaft 4, and the four walls of the movable limiting groove 2 can limit the chuck 3 to prevent the chuck 3 from rotating excessively.

[0023] Referring to Figs. 1-3 As shown in the figure, the bottom of each chuck 3 is provided with a sharp head 9, and the inclined surface of the sharp head 9 is located on the inner side of the chuck 3.

[0024] As an optimization scheme of the utility model, the sharp head 9 can facilitate the downward insertion of the chuck 3 into the mud when the fishing barrel is lowered, so that it can be quickly moved to the position of the fallen fish.

[0025] Referring to Figs. 1-3 As shown in the figure, the inner side of the chuck 3 is provided with a plurality of straight grooves 11, and the plurality of straight grooves 11 are arranged in cross.

[0026] As an optimization scheme of the utility model, the straight grooves 11 arranged in cross can, on the one hand, drain the excess water on the surface when holding the fallen fish, and on the other hand, the plurality of straight grooves 11 divide the surface of the chuck 3, increase the friction when clamping the fallen fish, and reduce the risk of falling.

[0027] Referring to Figs. 1-3 As shown in the figure, a plurality of rows of pressure holes 10 are opened on the fishing barrel shell 1 at the position around the movable limiting groove 2.

[0028] As an optimization scheme of the utility model, the plurality of rows of pressure holes 10 can promptly drain the high-pressure mud generated in the movable limiting groove 2 upward when the fishing barrel shell 1 is lowered, to prevent the pressure from accumulating and damaging the internal components.

[0029] The use process of the utility model is as follows:

[0030] First, install the fishing barrel on the driving equipment and put it into the well, then gradually push it down, at the same time, pressurize and drive the hydraulic push rod 7, push the plurality of chucks 3 through the driving block 5 and the driving link 6, push the chuck 3 tightly against the inner wall of the movable limiting groove 2, and at the same time, the pressure holes 10 can drain the water in the movable limiting groove 2 outward during the movement process to prevent pressure accumulation.

[0031] When the fishing barrel shell 1 approaches the fallen fish, the sharp head 9 of the chuck 3 can help it quickly insert into the mud around the fallen fish, and when the upper detection detects an increase in pushing pressure, it indicates that the sinking is in place, so the hydraulic push rod 7 can be depressurized to quickly extract the hydraulic oil, and the high pressure in the well can assist the hydraulic push rod 7, the hydraulic push rod 7 drives the chuck 3 to turn inward through the driving block 5 and the driving link 6 to clamp the fallen fish, and then the fishing barrel can be retrieved.

[0032] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all changes and modifications falling within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A drilling fishing socket comprising a fishing socket housing (1), characterised in that: The fishing barrel shell (1) is provided with movable limiting grooves (2) at the bottom, a plurality of clamping heads (3) are rotatably installed in the movable limiting grooves (2), a hydraulic push rod (7) is arranged in the fishing barrel shell (1), and the driving shaft of the hydraulic push rod (7) is in transmission connection with the plurality of clamping heads (3).

2. A drilling socket according to claim 1, characterized in that: The top of each of the plurality of clamping heads (3) is installed in the top wall of the movable limiting groove (2) through a rotating shaft (4).

3. A drilling socket according to claim 2, characterised in that: The driving shaft of the hydraulic push rod (7) is connected with a driving block (5), the driving block (5) is connected to the middle positions of the plurality of clamping heads (3) through a plurality of driving connecting rods (6) in the periphery, and the two ends of the driving connecting rod (6) are rotatably installed through connecting shafts (8).

4. A drilling socket according to claim 3, wherein: The bottom of each of the plurality of clamping heads (3) is provided with a sharp head (9), and the inclined surface of the sharp head (9) is located on the inner side of the clamping head (3).

5. A drilling socket according to claim 4, characterised in that: The inner side of the clamping head (3) is provided with a plurality of straight grooves (11), and the plurality of straight grooves (11) are arranged in cross.

6. A drilling socket according to claim 5, wherein: A plurality of pressing holes (10) are formed in the fishing barrel shell (1) at the positions around the movable limiting groove (2).

Images