Leakage-proof thermal recovery casing head

Abstract

The utility model relates to the technical field of thermal recovery casing heads, in particular to a leakage-proof thermal recovery casing head which comprises a casing body, a straight-through pipe and a reinforcing assembly, the straight-through pipe is connected in the casing body in a sleeved mode, a gland is arranged at the position, located on the periphery of the straight-through pipe, of the top of the casing body in a sleeved mode, and the reinforcing assembly is arranged on the periphery of the gland in a sleeved mode. The reinforcing assembly comprises a protective sleeve, the protective sleeve is connected with the sleeve body and the gland through welding, and the inner surface of the protective sleeve is connected with a sealing gasket through gluing; the reinforcing mechanism is additionally arranged, the reinforcing structure is additionally arranged on the periphery, the using stability and sealing performance of the thermal recovery casing head are improved, the situation that a welding part is cracked due to the influence of oil-string casing sinking is avoided, and therefore the using effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of thermal recovery casing head technology, specifically to a leak-proof thermal recovery casing head. Background Technology

[0002] Thermal recovery casing heads used in oil drilling and heavy oil extraction generally employ a slip-type structure to fix the surface casing and oil layer casing of the oil well. Thermal recovery casing heads typically use a cap to connect the outer side of the upper connector to the casing body, and the lower end of the upper connector is fixed to the upper end of the oil layer casing.

[0003] Currently, the lack of reinforcement mechanisms in the use of thermal recovery casing heads often leads to cracking at the weld between the hanger and the casing body due to casing subsidence, affecting the sealing performance and service life of the casing head. Therefore, a leak-proof thermal recovery casing head is proposed to incorporate reinforcement mechanisms. By adding external reinforcement structures, the stability and sealing performance of the thermal recovery casing head are improved, making it less susceptible to cracking at the weld due to casing subsidence, thereby enhancing its performance. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a leak-proof thermal recovery sleeve head, which allows for the addition of a reinforcing structure to the outside, thereby improving the stability and sealing of the thermal recovery sleeve head and enhancing its performance.

[0005] The technical solution adopted by this utility model to solve its technical problem is a leak-proof thermal recovery sleeve head, including a sleeve body, a straight pipe and a reinforcing component. The straight pipe is connected to the sleeve body. A pressure cap is sleeved on the top of the sleeve body around the straight pipe. A reinforcing component is sleeved on the periphery of the pressure cap.

[0006] The reinforcement component includes a sheath, and the sheath is connected to the sleeve body and the pressure cap by welding. The inner surface of the sheath is bonded with a sealing gasket by adhesive bonding.

[0007] By adopting the above technical solution, it is easy to add auxiliary reinforcement mechanisms to the outside of the casing body, thereby improving the stability and sealing performance and providing good leak prevention.

[0008] Specifically, the straight pipe includes an annular boss.

[0009] By adopting the above technical solution, it is easy to add multiple suspension mechanisms, thereby further improving the leak-proof effect of the casing body.

[0010] Specifically, the outer surface of the sheath is threadedly connected to a first screw corresponding to the gland through a pre-reserved threaded hole, and the sheath includes reinforcing ribs.

[0011] By adopting the above technical solutions, it is easy to improve the strength and lifespan of the reinforced components.

[0012] Specifically, the casing body includes an overflow pipe, and the end of the straight pipe is connected to the bottom flange of the treehouse by welding.

[0013] By adopting the above technical solution, it is easy to connect to external oil production equipment.

[0014] Specifically, the surface of the sheath is threadedly connected to a second screw corresponding to the annular boss through a pre-reserved threaded hole.

[0015] By adopting the above technical solution, the stability of the sheath installation can be improved.

[0016] Specifically, a hanger is provided inside the sleeve body, and the gland includes a conical boss, which is connected to the hanger via an external thread.

[0017] By adopting the above technical solution, it is easy to fix the straight pipe by threaded connection.

[0018] Specifically, the bottom of the casing body is connected to the surface casing via an internal thread, and the bottom of the straight pipe is located inside the surface casing and is connected to the oil layer casing via a thread.

[0019] By adopting the above technical solution, it is easy to connect the oil layer casing for use.

[0020] The beneficial effects of this utility model are:

[0021] (1) The leak-proof thermal mining casing head described in this utility model can add a double sealing structure to the outer periphery of the casing body by setting a straight pipe, a gland, a sheath and a sealing gasket. This not only improves the stability and sealing of the casing body, but also makes it less susceptible to the stability of the welded part affected by the sinking of the oil layer casing, thereby improving the actual use quality and effect.

[0022] (2) The leak-proof heat extraction sleeve head described in this utility model can also increase multiple suspension mechanisms by setting a straight pipe, annular boss, first screw, second screw and reinforcing rib, which further improves the convenience of sleeve body installation and the stability of use, making it more reliable and convenient to use. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the reinforcement component structure of this utility model;

[0026] Figure 3This is a schematic cross-sectional view of the sheath structure of this utility model;

[0027] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0028] In the diagram: 1. Casing body; 101. Overflow pipe; 2. Straight pipe; 201. Annular boss; 3. Tree bottom flange; 4. Hanger; 5. Gland; 501. Conical boss; 6. Reinforcing assembly; 601. Sheath; 602. Sealing gasket; 603. First screw; 604. Second screw; 605. Reinforcing rib; 7. Surface casing; 8. Oil layer casing. Detailed Implementation

[0029] 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.

[0030] To facilitate the use of external reinforcement structures, improve the stability and sealing of the thermal recovery casing head, and thus enhance its performance, such as... Figure 1-3 As shown, the leak-proof thermal extraction sleeve head of this utility model includes a sleeve body 1, a straight pipe 2 and a reinforcing component 6. The straight pipe 2 is connected to the sleeve body 1. A pressure cap 5 is sleeved on the top of the sleeve body 1 around the straight pipe 2. The reinforcing component 6 is sleeved on the periphery of the pressure cap 5.

[0031] The reinforcement component 6 includes a sheath 601, and the sheath 601 is connected to the sleeve body 1 and the pressure cap 5 by welding. The inner surface of the sheath 601 is bonded with a sealing gasket 602 by adhesive bonding.

[0032] In use, the outer reinforcement mechanism can be increased by the gland 5, the sheath 601, the casing body 1 and the sealing gasket 602, which can improve the stability and sealing of the casing body 1 and make it less susceptible to cracking of the welded parts caused by the sinking of the oil layer casing.

[0033] To improve ease of installation and stability of use, for example, such as Figure 1 , Figure 4 As shown, the present invention also includes an annular boss 201 in the straight pipe 2.

[0034] During use, the annular boss 201 facilitates the addition of multiple suspension mechanisms, further improving the ease of installation and stability of the straight pipe 2.

[0035] For example, such as Figure 2 As shown, the present invention also includes a first screw 603 corresponding to the pressure cap 5, which is threadedly connected to the outer surface of the sheath 601 through a reserved threaded hole, and the sheath 601 includes reinforcing ribs 605.

[0036] When in use, the reinforcing ribs 605 help to further improve the performance and lifespan of the reinforcement component 6.

[0037] For example, such as Figure 4 As shown, the present invention also includes an overflow pipe 101 in the casing body 1, and an oil well bottom flange 3 is welded to the end of the straight pipe 2.

[0038] During use, the overflow pipe 101 facilitates the outlet of the overflow, and the bottom flange 3 of the tree facilitates the connection of the oil production equipment.

[0039] For example, such as Figure 2 As shown, the present invention also includes a second screw 604 corresponding to the annular boss 201, which is threadedly connected to the surface of the sheath 601 through a reserved threaded hole.

[0040] In use, the second screw 604 facilitates the threaded connection of the annular boss 201, improving the stability of the installation and connection operation of the sheath 601.

[0041] For example, such as Figure 4 As shown, the present invention also includes a hanger 4 provided inside the sleeve body 1, and the pressure cap 5 includes a conical boss 501, and the conical boss 501 is connected to the hanger 4 by an external thread.

[0042] In use, the straight pipe 2 is easily connected to the sleeve body 1 via the hanger 4 and the tapered boss 501.

[0043] For example, such as Figure 1 As shown, the present invention also includes a surface sleeve 7 connected to the bottom of the sleeve body 1 via an inner thread, and an oil layer sleeve 8 connected to the bottom of the straight pipe 2 inside the surface sleeve 7 via a thread.

[0044] In use, the surface casing 7 and the oil layer casing 8 facilitate the connection between the casing body 1 and the straight pipe 2.

[0045] In use, the operator first passes the straight pipe 2 through the pressure cap 5 and the casing body 1, and then connects the hanger 4 to the tapered boss 501 by thread. Next, the pressure cap 5 is welded to the casing body 1. Then, the first screw 603 and the second screw 604 are turned to bolt the sheath 601 to the casing body 1 and the annular boss 201 in sequence. Finally, the sheath 601 is welded to the casing body 1 and the pressure cap 5. This adds an auxiliary reinforcement mechanism to the outside of the casing body 1, which not only improves the sealing and stability of the casing, but also makes it less likely for the welded parts to crack when the oil layer casing 8 sinks, making it more convenient and reliable to use.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A leak-proof thermal extraction sleeve head, characterized in that, It includes a sleeve body (1), a straight pipe (2) and a reinforcing component (6). The straight pipe (2) is connected inside the sleeve body (1). A pressure cap (5) is sleeved on the top of the sleeve body (1) around the straight pipe (2). The reinforcing component (6) is sleeved on the periphery of the pressure cap (5). The reinforcement component (6) includes a sheath (601), and the sheath (601) is connected to the sleeve body (1) and the gland (5) by welding. The inner surface of the sheath (601) is bonded with a sealing gasket (602) by adhesive bonding.

2. The leak-proof thermal recovery sleeve head according to claim 1, characterized in that, The straight pipe (2) includes an annular boss (201).

3. The leak-proof thermal recovery sleeve head according to claim 1, characterized in that, The outer surface of the sheath (601) is threadedly connected to a first screw (603) corresponding to the pressure cap (5) through a reserved threaded hole. The sheath (601) includes reinforcing ribs (605).

4. The leak-proof thermal recovery sleeve head according to claim 1, characterized in that, The casing body (1) includes an overflow pipe (101), and the end of the straight pipe (2) is connected to the bottom flange (3) of the oil well tree by welding.

5. The leak-proof thermal recovery sleeve head according to claim 2, characterized in that, The surface of the sheath (601) is threaded with a second screw (604) corresponding to the annular boss (201) through a reserved threaded hole.

6. The leak-proof thermal recovery sleeve head according to claim 1, characterized in that, The sleeve body (1) is provided with a hanger (4), and the pressure cap (5) includes a conical boss (501), and the conical boss (501) is connected to the hanger (4) by an external thread.

7. The leak-proof thermal recovery sleeve head according to claim 1, characterized in that, The bottom of the casing body (1) is connected to the surface casing (7) by an inner thread, and the bottom of the straight pipe (2) is located inside the surface casing (7) and is connected to the oil layer casing (8) by a thread.

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