Mandrel type casing hanger

Abstract

The utility model discloses a mandrel type casing hanger, and relates to the technical field of casing hangers. The mandrel type casing hanger comprises a casing hanger body and pipeline bodies arranged at the two ends of the casing hanger body, and the ends of the two pipeline bodies are in threaded connection with the inner walls of the two ends of the casing hanger body respectively. The reinforcing assembly is used for reinforcing the two pipeline main bodies after the two pipeline main bodies are connected with the casing hanger main body, and the reinforcing assembly comprises a mounting ring fixedly arranged on the outer surface of the casing hanger main body and two symmetrical square connecting columns arranged at the two ends of the mounting ring correspondingly. By arranging the reinforcing assembly, the arc-shaped positioning plate fixed with the pipeline main body can be tensioned, so that the stability after the pipeline main body is connected with the casing hanger main body is effectively improved, and the defect that in the prior art, the stability is poor after the pipeline is connected is effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of casing hangers, in particular to a mandrel type casing hanger. Background Art

[0002] A mandrel-type casing hanger is a commonly used device for wellhead oil production equipment, and its main function is to hang a casing column. There is an existing patent for a mandrel-type casing hanger, with patent announcement number CN218844266U, which includes a hanger body and a stabilizing collar, which is symmetrically rotatably connected to both sides of the hanger body through threads; the utility model uses a stabilizing collar, a limit bolt, an arc-shaped limit plate, and internal and external threads with opposite thread directions are respectively arranged on the hanger body. When the casing body is reversed under the action of vibration, the stabilizing collar will also be driven to reverse accordingly, and because the casing body is connected to the stabilizing collar, the stabilizing collar will generate a pulling force on the casing body under the action of the internal and external threads, so that the casing body and the hanger body are stably connected to each other, and loosening is avoided, thereby effectively ensuring the sealing at the connection position.

[0003] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: when the mandrel-type casing hanger is actually used to connect two pipes, its main connection method is still to use threads, resulting in poor stability of the two pipes after connection. That is, the technical solution proposed by the above-mentioned patent technology has the defect of poor stability after the pipes are connected.

[0004] Therefore, we propose a mandrel type casing hanger to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a mandrel-type casing hanger, which solves the defect of poor stability after pipeline connection.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a mandrel type casing hanger, comprising:

[0007] A casing hanger body, and pipe bodies arranged at both ends of the casing hanger body, and the ends of the two pipe bodies are respectively threadedly connected to the inner walls of both ends of the casing hanger body;

[0008] A reinforcement component is used to reinforce the pipe body after the two pipe bodies are connected to the casing hanger body. The reinforcement component includes a mounting ring fixed on the outer surface of the casing hanger body, and two symmetrical square connecting columns respectively arranged at both ends of the mounting ring. The reinforcement component also includes two arc-shaped positioning plates arranged on the end surfaces of the two corresponding square connecting columns. The ends of the two arc-shaped positioning plates are fixed to the outer surface of the pipe body by bolts, and the surfaces of the bolts are sleeved with locking nuts. Square cavities are provided on the surfaces of both ends of the mounting ring for the square connecting columns to slide, and the outer surface of the mounting ring is provided with a rotating ring for driving the square connecting column to slide inside the square cavity.

[0009] Preferably, an annular mounting groove is provided on the outer surface of the mounting ring, and two-way threaded columns are rotatably provided on the inner walls on both sides of the annular mounting groove, and the rotating ring is rotatably connected to the inner wall of the annular mounting groove.

[0010] Preferably, the cross-sectional shape of the rotating ring is an I-shape, and annular grooves for the rotating ring to rotate are provided on the inner walls on both sides of the annular mounting groove, and two groups of metal balls are arranged in a circular array on the inner ring surface of the rotating ring, and the two groups of metal balls are rollingly connected to the outer ring surface of the mounting ring.

[0011] Preferably, a plurality of mounting rods are fixedly provided on the outer surface of the rotating ring in a circular array, and a rotating rudder for rotating the rotating ring is fixedly provided at one end of the plurality of mounting rods away from the rotating ring.

[0012] Preferably, toothed discs are fixedly disposed on the surfaces of the middle portions of the two bidirectional threaded columns, and an inner toothed ring meshing with the two toothed discs is fixedly disposed on the inner ring surface of the rotating ring.

[0013] Preferably, the end of the square connecting column is provided with a cylindrical thread groove which is threadedly connected to the outer surface of the end of the bidirectional threaded column.

[0014] Preferably, a telescopic rod is fixedly provided on the outer surface of the end of the square connecting column, and the telescopic end of the telescopic rod is fixedly connected to the outer arc surface of the arc-shaped positioning plate.

[0015] Beneficial Effects

[0016] The utility model provides a mandrel-type casing hanger. Compared with the prior art, it has the following beneficial effects:

[0017] The mandrel-type casing hanger, by providing a reinforcement component, can tighten the arc-shaped positioning plate after being fixed to the pipeline body, thereby effectively improving the stability of the pipeline body after being connected to the casing hanger body, thereby effectively solving the defect of poor stability after pipeline connection in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 For this utility model Figure 2 The enlarged structural diagram at B in the middle;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating ring of the utility model.

[0023] In the figure:

[0024] 100. casing hanger body;

[0025] 200. Pipeline body;

[0026] 300, reinforcement assembly; 301, mounting ring; 302, square connecting column; 303, arc-shaped positioning plate; 304, bolt; 305, locking nut; 306, square cavity; 307, rotating ring; 308, annular mounting groove; 309, bidirectional threaded column; 3010, metal rolling ball; 3011, rotating rudder; 3012, toothed disc; 3013, inner gear ring; 3014, cylindrical threaded groove; 3015, telescopic rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-5 The utility model provides a technical solution: a mandrel type casing hanger, comprising:

[0029] A casing hanger body 100, and pipe bodies 200 disposed at both ends of the casing hanger body 100, and ends of the two pipe bodies 200 are respectively threadedly connected to inner walls of both ends of the casing hanger body 100;

[0030] The reinforcement component 300 is used to reinforce the pipe body 200 after the two pipe bodies 200 are connected to the casing hanger body 100. The reinforcement component 300 includes a mounting ring 301 fixed on the outer surface of the casing hanger body 100, and two symmetrical square connecting columns 302 respectively arranged at both ends of the mounting ring 301. The reinforcement component 300 also includes two arc-shaped positioning plates 303 arranged on the end surfaces of the two corresponding square connecting columns 302. The ends of the two arc-shaped positioning plates 303 are locked and fixed to the outer surface of the pipe body 200 by bolts 304, and the surface of the bolts 304 is provided with locking nuts 305.

[0031] A telescopic rod 3015 is fixedly provided on the outer surface of the end of the square connecting column 302, and the telescopic end of the telescopic rod 3015 is fixedly connected to the outer arc surface of the arc positioning plate 303, so that the arc positioning plate 303 can move up and down, which is convenient for effectively clamping and fixing the pipeline body 200.

[0032] Both end surfaces of the mounting ring 301 are provided with square cavities 306 for the square connecting column 302 to slide, and the outer surface of the mounting ring 301 is provided with a rotating ring 307 for driving the square connecting column 302 to slide inside the square cavity 306 .

[0033] A plurality of mounting rods are fixedly arranged in a circular array on the outer surface of the rotating ring 307 , and a rotating rudder 3011 for rotating the rotating ring 307 is fixedly arranged at one end of the plurality of mounting rods away from the rotating ring 307 . The setting of the rotating rudder 3011 can facilitate personnel to rotate the rotating ring 307 .

[0034] The cross-sectional shape of the rotating ring 307 is an I-shape, and annular grooves for the rotating ring 307 to rotate are provided on the inner walls on both sides of the annular mounting groove 308. Two groups of metal balls 3010 are arranged in a circular array on the inner ring surface of the rotating ring 307, and the two groups of metal balls 3010 are rollingly connected to the outer ring surface of the mounting ring 301. The arrangement of the metal balls 3010 effectively reduces the friction force when the rotating ring 307 rotates.

[0035] An annular mounting groove 308 is formed on the outer surface of the mounting ring 301 , and two-way threaded columns 309 are rotatably provided on the inner walls on both sides of the annular mounting groove 308 . The rotating ring 307 is rotatably connected to the inner wall of the annular mounting groove 308 .

[0036] A toothed disc 3012 is fixedly disposed on the surface of the middle portion of the two bidirectional threaded columns 309 , and an inner toothed ring 3013 meshing with the two toothed discs 3012 is fixedly disposed on the inner ring surface of the rotating ring 307 .

[0037] The end of the square connection column 302 is provided with a cylindrical thread groove 3014 which is threadedly connected to the outer surface of the end of the bidirectional thread column 309 .

[0038] The mandrel-type casing hanger, by providing a reinforcement assembly 300, can tighten the arc-shaped positioning plate 303 after being fixed to the pipe body 200, thereby effectively improving the stability of the pipe body 200 after being connected to the casing hanger body 100, thereby effectively solving the defect of poor stability after pipe connection in the prior art.

[0039] During operation, after the two ends of the two pipe bodies 200 are threadedly connected to the casing hanger body 100, the four arc-shaped positioning plates 303 can be respectively locked and fixed on the surfaces of the two pipe bodies 200 by bolts 304 and locking nuts 305, and then the rotating rudder 3011 is operated to drive the rotating ring 307 to rotate, and the rotation of the rotating ring 307 drives the inner gear ring 3013 to rotate, and the rotation of the inner gear ring 3013 drives the two toothed discs 3012 to rotate, thereby driving the two bidirectional threaded columns 309 to rotate, and the rotation of the bidirectional threaded column 309 drives the square connecting column 302 to move toward the middle under the action of the columnar thread groove 3014, so as to realize the tightening of the arc-shaped positioning plate 303 fixed to the pipe body 200, thereby effectively improving the stability of the pipe body 200 after being connected to the casing hanger body 100, thereby effectively solving the defect of poor stability after the pipe connection in the prior art.

[0040] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A mandrel type casing hanger, characterized in that: include, A casing hanger body (100), and pipe bodies (200) arranged at both ends of the casing hanger body (100), wherein the ends of the two pipe bodies (200) are respectively threadedly connected to the inner walls of both ends of the casing hanger body (100); A reinforcement assembly (300) is used to reinforce a pipe body (200) after two pipe bodies (200) are connected to a casing hanger body (100), the reinforcement assembly (300) comprising a mounting ring (301) fixedly mounted on the outer surface of the casing hanger body (100), and two symmetrical square connecting columns (302) respectively arranged at both ends of the mounting ring (301), the reinforcement assembly (300) further comprising two arc-shaped fixed holes arranged on the end surfaces of the two corresponding square connecting columns (302). The ends of the two arc-shaped positioning plates (303) are locked and fixed to the outer surface of the pipeline body (200) by bolts (304), and the surfaces of the bolts (304) are sleeved with locking nuts (305). The surfaces of both ends of the mounting ring (301) are provided with square cavities (306) for the square connecting column (302) to slide. The outer surface of the mounting ring (301) is provided with a rotating ring (307) for driving the square connecting column (302) to slide inside the square cavity (306).

2. A mandrel type casing hanger according to claim 1, characterized in that: The outer surface of the mounting ring (301) is provided with an annular mounting groove (308), and the inner walls on both sides of the annular mounting groove (308) are rotatably provided with bidirectional threaded columns (309), and the rotating ring (307) is rotatably connected to the inner wall of the annular mounting groove (308).

3. A mandrel type casing hanger according to claim 2, characterized in that: The cross-sectional shape of the rotating ring (307) is an I-shaped, and the inner walls on both sides of the annular mounting groove (308) are provided with annular grooves for the rotating ring (307) to rotate. The inner ring surface of the rotating ring (307) is provided with two groups of metal rolling balls (3010) in a circular array, and the two groups of metal rolling balls (3010) are both rollingly connected to the outer ring surface of the mounting ring (301).

4. A mandrel type casing hanger according to claim 1, characterized in that: A plurality of mounting rods are fixedly arranged in a circular array on the outer surface of the rotating ring (307), and a rotating rudder (3011) for rotating the rotating ring (307) is fixedly arranged at one end of the plurality of mounting rods away from the rotating ring (307).

5. A mandrel type casing hanger according to claim 2, characterized in that: A toothed disc (3012) is fixedly provided on the surface of the middle part of the two bidirectional threaded columns (309), and an inner toothed ring (3013) meshing with the two toothed discs (3012) is fixedly provided on the inner ring surface of the rotating ring (307).

6. A mandrel type casing hanger according to claim 1, characterized in that: The end of the square connection column (302) is provided with a columnar thread groove (3014) threadedly connected to the outer surface of the end of the bidirectional thread column (309).

7. A mandrel type casing hanger according to claim 1, characterized in that: A telescopic rod (3015) is fixedly provided on the outer surface of the end of the square connecting column (302), and the telescopic end of the telescopic rod (3015) is fixedly connected to the outer arc surface of the arc-shaped positioning plate (303).

Images