Casing head fastener for oil exploitation

Abstract

The utility model relates to the technical field of oil exploitation equipment, in particular to a casing head fastening device for oil exploitation, which comprises a first arc-shaped sleeve and a second arc-shaped sleeve, flange rings are welded at the tops of the outer sides of the first arc-shaped sleeve and the second arc-shaped sleeve, and the bottoms of the flange rings are connected with protective pipes through thread grooves. A connecting rod is arranged in the protective pipe in a penetrating and sleeving mode, and the top end of the connecting rod is connected with a pressing plate through a threaded groove. A fixing assembly is arranged on one side of the protective pipe and comprises a cylinder connected to one side of the protective pipe through a threaded groove, and a bolt rod is arranged in the cylinder in a penetrating and sleeving mode; the first arc-shaped sleeve and the second arc-shaped sleeve are clamped at a well mouth and fixed, the connecting rod is pulled downwards to drive the pressing plate to move downwards, a casing head flange installed at the well mouth or a bolt on the flange is pressed, the casing head flange is prevented from being loosened due to vibration, the compression spring pushes the plug pin rod to move, the downwards-moved connecting rod is fixed, and the casing head on the well mouth is fastened through the pressing plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil exploitation equipment technical field, concretely relates to a casing head is used in oil exploitation. BACKGROUND

[0002] As a part of the oil casing system, the casing head plays a crucial role in the drilling process. It is located at the top of the wellhead and provides stable support for subsequent casing installation through its solid structure and sealing performance. At the same time, the casing head can effectively isolate the water layer and shallow complex strata at the surface, preventing drilling fluid and other pollutants from entering these strata, thereby protecting the integrity of groundwater resources and the environment.

[0003] Currently, after the casing head is installed on the wellhead, it is fixed on the pipeline of the wellhead through its own flange, slips, and casing head. However, using bolts to fix through the flange can cause the bolts to loosen due to vibration. Therefore, a casing head tightener for oil exploitation is proposed, which clamps the first arc sleeve and the second arc sleeve on the outside of the inlet. The connecting rod is lowered to press the bolts or flanges through the pressure plate, preventing the bolts from loosening due to vibration. SUMMARY

[0004] To solve the problems in the prior art, the utility model provides a casing head tightener for oil exploitation, which clamps the first arc sleeve and the second arc sleeve on the outside of the inlet. The connecting rod is lowered to press the bolts or flanges through the pressure plate, preventing the bolts from loosening due to vibration.

[0005] The utility model solves the technical problems by adopting the technical scheme of a casing head tightener for oil exploitation, which includes a first arc sleeve and a second arc sleeve. The top of the first arc sleeve and the second arc sleeve is welded with a flange ring. The bottom of the flange ring is connected with a protective tube through a threaded groove. The protective tube is penetrated by a connecting rod inside. The top of the connecting rod is connected with a pressure plate through a threaded groove.

[0006] One side of the protective tube is provided with a fixing assembly, which includes a cylinder connected to one side of the protective tube through a threaded groove. The cylinder is penetrated by a latch rod inside. The outer side of the latch rod inside the cylinder is sleeved with a compression spring.

[0007] By adopting the above technical scheme, the first arc sleeve and the second arc sleeve are clamped on the wellhead and fixed. The connecting rod is pulled down to drive the pressure plate to move down. The bolts installed on the casing head flange or flange are pressed. The compression spring pushes the latch rod to move, fixing the connecting rod after moving down.

[0008] Specifically, the inner side of the first arc sleeve and the second arc sleeve is equally glued with an anti-skid strip. The inner side of the first arc sleeve and the second arc sleeve between the anti-skid strips is equally welded with an anti-skid tooth.

[0009] Specifically, the flange ring has a through hole at the top, the connecting rod passes through the through hole, and the pressure plate has an anti-slip pad glued to the bottom.

[0010] Specifically, the connecting rod has equidistant locking holes on one side corresponding to the pin rod.

[0011] Specifically, a limiting ring is fixedly sleeved on the outer side of the compression spring end of the pin rod.

[0012] Specifically, mounting plates are welded to both sides of the bottom of the first and second arc-shaped sleeves.

[0013] The beneficial effects of this utility model are:

[0014] The present invention describes a casing head fastener for oil well drilling. After the first and second arc-shaped sleeves are engaged and fixed at the wellhead, the connecting rod is pulled to move the pressure plate downward, so that the pressure plate presses on the flange or bolts of the casing head, tightening it to prevent the bolts from loosening due to vibration. The compression spring pushes the pin rod to move, so that one end of it is inserted into the corresponding locking hole, which can fix the connecting rod after it has moved down. The flange or bolts on the flange can be fastened by the connecting rod and the pressure plate. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the first and second arc-shaped sleeves of this utility model;

[0018] Figure 3 This is a schematic diagram of the protective tube and connecting rod structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the fixing component structure of this utility model;

[0020] In the diagram: 1. First arc-shaped sleeve; 2. Second arc-shaped sleeve; 3. Flange ring; 4. Protective tube; 5. Connecting rod; 6. Pressure plate; 7. Fixing assembly; 701. Cylinder body; 702. Pin rod; 703. Compression spring; 704. Limiting ring; 8. Anti-slip pad; 9. Limiting block; 10. Anti-slip strip; 11. Anti-slip teeth; 12. Through hole; 13. Mounting plate; 14. Clip hole. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] The first arc-shaped sleeve and the second arc-shaped sleeve are clamped outside the inlet, the connecting rod is lowered to press the bolt or the flange through the pressing plate, and the bolt is prevented from loosening due to vibration, such as Figures 1-4 The utility model discloses a casing head fastener for petroleum exploitation, including first arc-shaped sleeve 1 and second arc-shaped sleeve 2, first arc-shaped sleeve 1 and second arc-shaped sleeve 2 outside top all are welded with flange ring 3, the bottom of flange ring 3 is connected with the protection pipe 4 through the thread groove, the inside of protection pipe 4 is through the sleeve and is equipped with the connecting rod 5, the top of connecting rod 5 is connected with the pressing plate 6 through the thread groove,

[0023] One side of protection pipe 4 is provided with fixed assembly 7, fixed assembly 7 includes the cylinder body 701 connected on one side of protection pipe 4 through the thread groove, the inside of cylinder body 701 is through the sleeve and is equipped with the latch rod 702, the outside of latch rod 702 is equipped with compression spring 703 in the inside of cylinder body 701.

[0024] When using, first arc-shaped sleeve 1 and second arc-shaped sleeve 2 are clamped in wellhead and fixed, the connecting rod 5 is pulled down to drive the pressing plate 6 to move down, the bolt installed on the casing head flange or flange is pressed, the latch rod 702 is pushed to move by compression spring 703, and the connecting rod 5 after moving down is fixed.

[0025] Exemplarily, as shown in the figure, Figure 2 The utility model discloses a first arc-shaped sleeve and second arc-shaped sleeve inside are all pasted with antiskid strip 10 at equal intervals, and first arc-shaped sleeve 1 and second arc-shaped sleeve 2 are welded with antiskid tooth 11 at equal intervals on the inside between antiskid strip 10.

[0026] When using, the setting of antiskid strip 10 and antiskid tooth 11 makes first arc-shaped sleeve 1 and second arc-shaped sleeve 2 clamped in wellhead not slide.

[0027] Exemplarily, as shown in the figure, Figure 2 、 Figure 3 The utility model discloses a flange ring 3 top is through and is equipped with the through -hole 12, the connecting rod 5 is through the through -hole 12, and the bottom of pressing plate 6 is pasted with antiskid pad 8.

[0028] When using, the setting of antiskid strip 10 and antiskid tooth 11 makes first arc-shaped sleeve 1 and second arc-shaped sleeve 2 clamped in wellhead not slide.

[0029] Exemplarily, as shown in the figure, Figure 3 The utility model discloses a connecting rod 5 one side is equipped with the clamping hole 14 corresponding with latch rod 702 at equal intervals.

[0030] When using, the setting of antiskid strip 10 and antiskid tooth 11 makes first arc-shaped sleeve 1 and second arc-shaped sleeve 2 clamped in wellhead not slide.

[0031] As shown in Figure 4 The utility model further includes that the bolt rod 702 is fixed with the limit ring 704 outside one end of the compression spring 703.

[0032] In use, the limit ring 704 can prevent the bolt rod 702 from falling out of the cylinder body 701.

[0033] As shown in Figure 2 The utility model further includes that the first arc-shaped sleeve 1 and the second arc-shaped sleeve 2 are welded with the mounting plate 13 on both sides of the bottom of the flange ring 3.

[0034] In use, the first arc-shaped sleeve 1 and the second arc-shaped sleeve 2 after closing can be fixed by using the bolt through the mounting plate 13.

[0035] In use, after the casing head is installed on the well mouth, the personnel clamps the first arc-shaped sleeve 1 and the second arc-shaped sleeve 2 outside the well mouth, and the first arc-shaped sleeve 1 and the second arc-shaped sleeve 2 after closing are fixed by using the bolt through the mounting plate 13.

[0036] The personnel pulls the bolt rod 702 to make one end of the bolt rod 702 leave the clamping hole 14, and the connecting rod 5 is driven to move downward, and the pressing plate 6 is pressed on the flange or bolt of the casing head, so that the bolt is prevented from loosening due to vibration, and after the bolt rod 702 is loosened, the compression spring 703 pushes the bolt rod 702 to move through the limit ring 704, so that one end of the bolt rod 702 is inserted into the corresponding clamping hole 14, the connecting rod 5 after moving downward can be fixed, and the flange or bolt on the flange can be fastened through the connecting rod 5 and the pressing plate 6.

[0037] The first arc-shaped sleeve 1 and the second arc-shaped sleeve 2 are glued with anti-skid strips 10 at equal intervals on the inner sides, and the anti-skid strips 10 are welded with anti-skid teeth 11 at equal intervals, which can prevent the first arc-shaped sleeve 1 and the second arc-shaped sleeve 2 clamped on the well mouth from sliding up and down, and the pressing plate 6 is glued with the anti-skid pad 8 at the bottom, so that the pressing plate 6 can tightly press the bolt.

[0038] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A casing head tightener for use in oil production, characterized in that Including first arc sleeve (1) and second arc sleeve (2), the first arc sleeve (1) and second arc sleeve (2) outside top are welded with flange ring (3), the bottom of flange ring (3) is connected with the protection pipe (4) through the thread groove, the protection pipe (4) is internally penetrated with the connecting rod (5), the connecting rod (5) top is connected with the pressing plate (6) through the thread groove; The protection pipe (4) one side is provided with fixed assembly (7), the fixed assembly (7) includes the cylinder (701) connected in the protection pipe (4) one side through the thread groove, the cylinder (701) internally penetrates with the bolt rod (702), the bolt rod (702) is located in the outside of the cylinder (701) internally and is provided with compression spring (703).

2. A tubing head tightener for use in the production of oil as claimed in claim 1 wherein, The first arc sleeve (1) and second arc sleeve (2) inside are equally glued with antiskid strip (10), the first arc sleeve (1) and second arc sleeve (2) are welded with antiskid tooth (11) in the inside equally between antiskid strip (10).

3. A tightener for a casing head as defined in claim 1, characterized in that The flange ring (3) top is penetrated and is provided with through hole (12), the connecting rod (5) is penetrated through through hole (12), the pressing plate (6) bottom is glued with antiskid pad (8).

4. A tightener for a casing head as defined in claim 1, wherein The connecting rod (5) one side is equally provided with the clamping hole (14) corresponding with bolt rod (702).

5. A tightener for a casing head as defined in claim 1, wherein The bolt rod (702) is fixedly provided with limit ring (704) on the outside of one end of compression spring (703).

6. A tubing head tightener for use in the oil industry as claimed in claim 1, wherein, The first arc sleeve (1) and second arc sleeve (2) are welded with mounting plate (13) on the both sides of the bottom of flange ring (3).

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