Fixing device of underground jar knocker

Abstract

The utility model discloses an underground jar fixing device which comprises a sleeve, the outer end of the sleeve is fixedly connected with a plurality of arc protrusions, a jar body is correspondingly arranged in the sleeve, the upper end of the jar body is fixedly connected with a cover plate, the jar body is movably connected with a limiting plate, and the cover plate is fixedly connected with the cover plate. According to the jar, the outer end of the jar is provided with a sleeve and an arc protrusion, the jar can make contact with the inner wall of a drilling well, so that the stability of the jar in the using process is improved, meanwhile, a threaded sleeve in a second connecting piece is controlled through a handle and a threaded rod, and therefore the jar is convenient to use, and the service life of the jar is prolonged. According to the jar, the telescopic effect can be achieved, so that the jar head is disassembled and assembled by being matched with the first connecting piece, after the jar head is used for a long time, a worker can quickly replace the jar head without disassembling the whole jar, and the convenience and practicability of the device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of downhole jar, concretely is a kind of downhole jar's fixing device. BACKGROUND

[0002] During drilling, due to the long drilling assembly, the complex geological conditions underground, it is inevitable that the drilling tool is stuck during drilling, and the use of jar can achieve the purpose of jar release, mechanical jar uses mechanical friction principle, and the locking mechanism uses a set of gage type slip, and the release of slip sub is controlled by the deformation of elastic sleeve under pressure, and the jar force is not affected by the temperature in the well, since the jar is used for a long time, it is easy to cause the damage of jar head, so it is necessary for workers to disassemble and overhaul the entire jar, which leads to the problem of troublesome maintenance. UTILITY MODEL CONTENTS

[0003] The utility model discloses a kind of downhole jar's fixing device, solve the problem that the jar is used for a long time in prior art, it is easy to cause the damage of jar head, so it is necessary for workers to disassemble and overhaul the entire jar, which leads to the problem of troublesome maintenance.

[0004] To achieve the above object, provide a kind of downhole jar's fixing device, including sleeve, the outer end of the sleeve is fixedly connected with several circular arc protrusions, the inside of the sleeve is correspondingly provided with jar body, the upper end of the jar body is fixedly connected with cover plate, the jar body is movably connected with limit plate, and the cover plate is fixedly connected with the limit plate, the lower end of the jar body is provided with jar rod, the lower end of the jar rod is fixedly connected with connecting piece two;

[0005] The lower end of the connecting piece two is correspondingly provided with connecting piece one, the lower end of the connecting piece one is fixedly connected with jar head, the upper end of the connecting piece one is fixedly connected with limit block, the lower end of the connecting piece two is provided with limit slot, and the limit block and the limit slot are correspondingly.

[0006] According to the fixing device of the downhole jar, the lower end of the connecting piece two is provided with slot, the inside of the slot is rotatably connected with screw rod, and the outer end of the screw rod is fixedly connected with handle.

[0007] According to the fixing device of the downhole jar, the other end of the screw rod is threadedly connected with the sleeve, the sleeve is arranged in the inside of the limit slot, the sleeve is fixedly connected with the connecting plate, and the connecting plate is slidably connected in the inside of the slot.

[0008] According to the fixing device of the downhole jar, the inside of the limit block is provided with through hole, and the sleeve and the through hole are correspondingly.

[0009] According to the fixing device of the downhole jar, the upper four ends of the sleeve are fixedly connected with positioning columns, positioning holes are formed in the cover plate, and the upper four other ends of the sleeve are threadedly connected with positioning bolts two.

[0010] According to the fixing device of the downhole jar, the bottom three ends of the sleeve are fixedly connected with a positioning plate, and the positioning plate is threadedly connected with a positioning bolt one between the limiting plate.

[0011] Compared with the prior art, the fixing device of the downhole jar has the beneficial effects that:

[0012] 1、The sleeve and the circular arc protrusion installed at the outer end of the jar can contact the inner wall of the well, thereby improving the stability of the jar during use, and the screw sleeve in the connecting piece two is controlled by the handle and the screw rod, so that the effect of extension and contraction is achieved, thereby cooperating with the connecting piece one to complete the disassembly and assembly of the jar head, so that the work personnel can quickly replace the jar head after long-term use without disassembling the whole jar, thereby improving the convenience and practicality of the device.

[0013] 2、The cover plate and the limiting plate can correspond to the upper and lower ends of the sleeve, and the jar can be stably installed in the sleeve by the two groups of positioning bolts for use, thereby improving the overall stability.

[0014] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent from the following description, or will be learned by practicing the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] The present application will be further described below in combination with the drawings and embodiments.

[0016] Figure 1 It is a whole structure schematic view of the fixing device of the downhole jar.

[0017] Figure 2 It is a cover plate installation structure schematic view of the fixing device of the downhole jar.

[0018] Figure 3 It is a connecting piece installation schematic view of the fixing device of the downhole jar.

[0019] Figure 4 It is a limiting component schematic view of the fixing device of the downhole jar.

[0020] Figure 5 It is a sectional view of the fixing device of the downhole jar.

[0021] In the figure: 1, sleeve; 2, cover plate; 3, arc convex; 4, limiting plate; 5, positioning bolt one; 6, shock rod; 7, connecting piece one; 8, shock head; 9, connecting piece two; 10, positioning plate; 11, screw hole; 12, positioning column; 13, positioning bolt two; 14, positioning hole; 15, handle; 16, limiting groove; 17, screw rod; 18, connecting plate; 19, screw sleeve; 20, limiting block; 21, through hole; 22, shock ware body; 23, slot. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a kind of fixing device of downhole shock ware, including sleeve 1, the outer end of sleeve 1 is fixedly connected with several arc convex 3, the outer end of shock ware is installed sleeve 1 and arc convex 3 can be contacted with the inner wall of well, to improve the stability of shock ware when using, the inside of sleeve 1 is correspondingly provided with shock ware body 22, the upper end of shock ware body 22 is fixedly connected with cover plate 2, shock ware body 22 is movably connected with limiting plate 4, and cover plate 2 is fixedly connected with limiting plate 4, the lower end of shock ware body 22 is provided with shock rod 6, the lower end of shock rod 6 is fixedly connected with connecting piece two 9, limiting plate 4 is movably connected with shock ware body 22, but fixedly connected with cover plate 2, to stably install shock ware 22 in the inside of sleeve 1 and use;

[0024] The lower end of connecting piece two 9 is correspondingly provided with connecting piece one 7, the lower end of connecting piece one 7 is fixedly connected with shock head 8, the upper end of connecting piece one 7 is fixedly connected with limiting block 20, the lower end of connecting piece two 9 is provided with limiting groove 16, limiting block 20 and limiting groove 16 are mutually corresponding, by the quick correspondence between limiting block 20 and limiting groove 16, shock head 8 can be quickly disassembled and assembled by staff, to improve the use convenience of entire device;

[0025] The lower end of the connecting piece two 9 is provided with a slot 23, a screw rod 17 is rotatably connected in the slot 23, a handle 15 is fixedly connected to the outer end of the screw rod 17, a sleeve 19 is threadedly connected to the other end of the screw rod 17, the sleeve 19 penetrates into a limiting groove 16, a connecting plate 18 is fixedly connected to the sleeve 19, the connecting plate 18 is slidably connected in the slot 23, a through hole 21 is formed in the limiting block 20, the sleeve 19 corresponds to the through hole 21, the handle 15 on the outside is rotated to drive the screw rod 17 to rotate, and the sleeve 19 is gradually retracted inward under the action of the threaded connection and moves away from the through hole 21, so that the staff can directly pull out the percussion head 8 to disassemble and replace it, the applicability and convenience of the device are improved, and the connecting plate 18 in the inside can limit the sleeve 19 to ensure the stable movement of the sleeve 19.

[0026] The upper four ends of the sleeve 1 are fixedly connected with positioning columns 12, the cover plate 2 is provided with positioning holes 14, the upper four other ends of the sleeve 1 are threadedly connected with positioning bolts two 13, the sleeve 1 is provided with screw holes 11, the positioning bolts two 13 correspond to the screw holes 11, the bottom three ends of the sleeve 1 are fixedly connected with a positioning plate 10, and the positioning plate 10 is threadedly connected with the limiting plate 4 through a positioning bolt one 5.

[0027] Working principle: in use, the percussion device body 22 is sent into the inside of the sleeve 1, the positioning column 12 corresponds to the positioning hole 14 during installation, the positioning bolt two 13 corresponds to the screw hole 11, the upper end of the percussion device body 22 is locked, the limiting plate 4 is locked with the positioning plate 10 through the positioning bolt one 5, the percussion device body 22 is stably used in the inside of the sleeve 1, the percussion device body 22 is used, the inside mandrel acts on the percussion head 8 to perform percussion, the circular arc protrusion 3 contacts the drilling well wall to stabilize and buffer the operation of the percussion device body 22, when the percussion head 8 needs to be disassembled and replaced, the handle 15 on the outside is rotated to drive the screw rod 17 to rotate, the sleeve 19 is gradually retracted inward under the action of the threaded connection and moves away from the through hole 21, the staff can directly pull out the percussion head 8 to disassemble and replace it, the applicability and convenience of the device are improved.

[0028] The above embodiment of the utility model is described in detail in combination with the drawings, but the utility model is not limited to the above embodiment, and various changes can be made within the knowledge range possessed by ordinary skilled persons in the technical field without departing from the purpose of the utility model.

Claims

1. A fixing device for a downhole jar, comprising a sleeve (1), characterized in that, The outer end of the sleeve (1) is fixedly connected with a plurality of arc protrusions (3), the inside of the sleeve (1) is correspondingly provided with a jar body (22), the upper end of the jar body (22) is fixedly connected with a cover plate (2), the jar body (22) is movably connected with a limiting plate (4), and the cover plate (2) is fixedly connected with the limiting plate (4), the lower end of the jar body (22) is provided with a jar rod (6), and the lower end of the jar rod (6) is fixedly connected with a connecting piece two (9). The lower end of the connecting piece two (9) is correspondingly provided with a connecting piece one (7), the lower end of the connecting piece one (7) is fixedly connected with a jar head (8), the upper end of the connecting piece one (7) is fixedly connected with a limiting block (20), and the lower end of the connecting piece two (9) is provided with a limiting groove (16).

2. A downhole jar fixture as defined in claim 1, wherein: The lower end of the connecting piece two (9) is provided with a slot (23), the inside of the slot (23) is rotatably connected with a screw rod (17), and the outer end of the screw rod (17) is fixedly connected with a handle (15).

3. A downhole jar fixture as defined in claim 2, wherein: The other end of the screw rod (17) is threadedly connected with a screw sleeve (19), the screw sleeve (19) is arranged in the inside of the limiting groove (16), the screw sleeve (19) is fixedly connected with a connecting plate (18), and the connecting plate (18) is slidably connected in the inside of the slot (23).

4. A downhole jar fixture as defined in claim 3, wherein: The inside of the limiting block (20) is provided with a through hole (21), and the screw sleeve (19) and the through hole (21) correspond to each other.

5. The apparatus of claim 1 wherein: The upper four ends of the sleeve (1) are fixedly connected with positioning columns (12), the cover plate (2) is provided with positioning holes (14), the upper four other ends of the sleeve (1) are threadedly connected with positioning bolts two (13), the sleeve (1) is provided with screw holes (11), and the positioning bolts two (13) correspond to the screw holes (11).

6. A downhole jar fixture as defined in claim 1, wherein: The bottom three ends of the sleeve (1) are fixedly connected with a positioning plate (10), and the positioning plate (10) and the limiting plate (4) are threadedly connected with a positioning bolt one (5).

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