Casing head hanger

Abstract

The utility model relates to the technical field of hangers, in particular to a casing head hanger, which comprises a hanging seat, the suspension pipe part is arranged on the suspension seat; the at least one group of slip parts are arranged on the suspension seat, and the suspension seat comprises a supporting seat, a plurality of slip parts and a plurality of slip parts; at least one group of flushing joints are arranged and are connected with the supporting seat, and the suspension pipe part comprises a suspension sleeve arranged on the supporting seat; and the internal thread joint is connected with the suspension sleeve. By means of an assembly composed of the hanging seat, the pipe hanging part and the slip part, a high-stability casing head hanging mechanism is provided for use of petroleum drilling, a pipeline head can be stably hung and connected to a drilling well, double cooperation of thread hanging cooperation and slip clamping is adopted, the use stability of a casing is better, and the use safety of the casing is improved. And a flushing structure capable of flushing the part between the sleeve and the inner cavity of the hanging part is arranged and can be started in the flushing and cleaning period, sludge and gravel entering the hanging cavity are flushed and cleaned, and the using stability of the whole hanging part is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of hangers, and particularly relates to a casing head hanger. Background Art

[0002] The function of the casing head hanger is to hang the casing. Through specific mechanical structures, such as combined jaws and / or threads, the fixation and suspension of the casing string are ensured, ensuring the stability of the casing string in the well to avoid the movement or detachment of the casing string, thus guaranteeing the safe progress of the drilling operation.

[0003] In the existing casing head hanger, the support inner cavity platform for supporting the suspension sleeve inside is prone to accumulate impurities, affecting the centering of the centers between the hanger and the pipe sleeve, and affecting the stability and service life of the installation and use. At the same time, the fixing method for the suspension head is also relatively single. After the single suspension part fails accidentally, the pipe sleeve suspended in the hanger will immediately fall off and cannot be retrieved, resulting in a relatively high fault tolerance cost in use. Therefore, a casing head hanger is proposed to provide a set of highly stable casing head suspension mechanisms for oil drilling. It adopts the dual cooperation of threaded suspension and slip fixation, and can clean the inside of the suspension cavity to ensure the stability of the overall suspension component. Summary of the Utility Model

[0004] Aiming at the problems in the prior art, the utility model provides a casing head hanger to provide a set of highly stable casing head suspension mechanisms for oil drilling. It adopts the dual cooperation of threaded suspension and slip fixation, and can clean the inside of the suspension cavity to ensure the stability of the overall suspension component.

[0005] The technical solution adopted by the utility model to solve its technical problems is a casing head hanger, including:

[0006] A suspension seat;

[0007] A suspension pipe part, arranged on the suspension seat;

[0008] A slip part, with at least one group, arranged on the suspension seat.

[0009] By adopting the above technical solution, a set of highly stable casing head suspension mechanisms is realized through the components composed of the suspension seat, the suspension pipe part and the slip part, enabling the pipe head to be stably suspended and connected to the drilling. By adopting the dual cooperation of threaded suspension and slip fixation, the stability of the casing use is better.

[0010] Specifically, the suspension seat includes:

[0011] A support seat;

[0012] A flushing joint, with at least one group, and connected to the support seat.

[0013] By adopting the above technical solution, the flushing structure between the casing and the inner cavity of the suspension part can be opened during the period when flushing and cleaning are required, so as to flush and clean the sludge and gravel entering the inside of the suspension cavity, ensuring the stability of the overall suspension component during use.

[0014] Specifically, the suspension pipe part includes:

[0015] A suspension sleeve, which is arranged on the support seat;

[0016] An internal thread joint, which is connected to the suspension sleeve.

[0017] Specifically, the slip part includes:

[0018] A mounting seat, which is arranged on the support seat;

[0019] An oil cylinder, which is arranged on the mounting seat;

[0020] A slip, which is located inside the support seat and is connected to the oil cylinder;

[0021] A guide rod, which is inserted into the mounting seat and is connected to the slip.

[0022] By adopting the above technical solution, through the dual cooperation of threaded suspension and slip clamping, the stability of the casing during use is better.

[0023] Specifically, the internal thread joint is inserted into the support seat, and the suspension sleeve is installed on the top of the support seat through a flange.

[0024] Specifically, the mounting seat is fixed to the support seat.

[0025] The beneficial effects of the present utility model: The assembly composed of the suspension seat, the suspension pipe part and the slip part realizes providing a set of high-stability casing head suspension mechanism for the use of oil drilling, enabling the pipe head to be stably suspended and connected to the drilling. Through the dual cooperation of threaded suspension and slip clamping, the stability of the casing during use is better, and a flushing structure capable of flushing between the casing and the inner cavity of the suspension part is provided, which can be opened during the period when flushing and cleaning are required to flush and clean the sludge and gravel entering the inside of the suspension cavity, ensuring the stability of the overall suspension component during use, solving the problems that the support inner cavity platform for supporting the suspension sleeve inside the existing casing head hanger is prone to accumulate impurities, affecting the centering of the center of the hanger and the pipe sleeve, affecting the stability and service life of installation and use, and at the same time, the fixing method of the suspension head is relatively single. After the single suspension part fails accidentally, the pipe sleeve suspended in the hanger will immediately fall off, which cannot be recovered, resulting in a relatively high error tolerance cost for use. Description of the Drawings

[0026] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0027] Figure 1 is the overall schematic diagram of the present utility model;

[0028] Figure 2 is the schematic diagram of the suspension seat of the present utility model;

[0029] Figure 3 is the schematic diagram of the suspension pipe part of the present utility model;

[0030] Figure 4 is the schematic diagram of the slip part of the present utility model.

[0031] In the figure: 1. Suspension seat; 101. Support seat; 102. Flushing joint; 2. Suspension pipe part; 201. Suspension sleeve; 202. Internal thread joint; 3. Slip part; 301. Mounting seat; 302. Oil cylinder; 303. Slip; 304. Guide rod. Specific embodiments

[0032] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0033] In order to improve the use stability, as Figures 1-4 shown, a casing head hanger of the present utility model includes:

[0034] Suspension seat 1;

[0035] Suspension pipe part 2, arranged on the suspension seat 1;

[0036] Slip part 3, at least one group is provided, and is arranged on the suspension seat 1.

[0037] During use, a set of high-stability casing head suspension mechanism is provided for the use of oil drilling through the suspension seat 1, the suspension pipe part 2 and the slip part 3, and double cooperation of threaded suspension and slip clamping is adopted, and the inside of the suspension cavity can be cleaned to ensure the stability of the use of the overall suspension components.

[0038] In order to improve the cleanliness of the inside of the suspension cavity, by way of example, as Figure 1 , 2 shown, the present utility model further includes that the suspension seat 1 includes:

[0039] Support seat 101;

[0040] Flushing joint 102, at least one group is provided, and is connected to the support seat 101.

[0041] During use, the flushing connectors 102 are arranged on both sides of the support base 101. One side of the flushing connector 102 is connected to an external water supply pipeline, and the other side is connected to an external drainage pipeline. When cleaning is required, the pipeline valves connected to the flushing connectors 102 are opened, the inner cavity of the support base 101 is filled with water through the water supply pipeline, and the water is drained through the flushing connectors 102 on the other side of the support base 101, so that most of the impurities can be carried away by the water flow.

[0042] Exemplarily, as Figure 1 、 3 shown, the present utility model further includes that the suspension pipe portion 2 includes:

[0043] A suspension sleeve 201, arranged on the support base 101;

[0044] An internal thread joint 202, connected to the suspension sleeve 201.

[0045] During use, first insert the pipe sleeve to be suspended into the suspension sleeve 201. After the threaded end of the head of the pipe sleeve is about to reach inside the internal thread joint 202, thread-fix it with the threaded head of the pipe sleeve through the internal thread joint 202. Then insert the pipe sleeve together with the internal thread joint 202 into the support base 101, and install the suspension sleeve 201 and the support base 101 through a flange.

[0046] Exemplarily, as Figure 1 、 4 shown, the present utility model further includes that the slip portion 3 includes:

[0047] A mounting seat 301, arranged on the support base 101;

[0048] An oil cylinder 302, arranged on the mounting seat 301;

[0049] A slip 303, located inside the support base 101 and connected to the oil cylinder 302;

[0050] A guide rod 304, inserted into the mounting seat 301 and connected to the slip 303.

[0051] During use, the slips 303 are pushed out through the oil cylinders 302 on both sides of the support base 101, so that the slips 303 clamp both sides of the casing entering the support base 101 to achieve the second fixation.

[0052] The internal thread joint 202 is inserted into the support base 101, and the suspension sleeve 201 and the top of the support base 101 are installed through a flange.

[0053] The mounting seat 301 is fixed to the support base 101.

[0054] When the utility model is in use, the support base 101 is fixed to the drilling assembly, and the flushing connectors 102 are arranged on both sides of the support base 101. One side of the flushing connector 102 is connected to the external water supply pipeline, and the other side is connected to the external drainage pipeline. Then, the pipe sleeve to be suspended is inserted into the suspension sleeve 201. After the threaded end of the head of the pipe sleeve is about to reach the internal threaded joint 202, the internal threaded joint 202 and the threaded head of the pipe sleeve are threadedly fixed. Then, the pipe sleeve together with the internal threaded joint 202 is inserted into the support base 101, and the suspension sleeve 201 and the support base 101 are installed through a flange. The slip jaws 303 are pushed out by the hydraulic cylinders 302 on both sides of the support base 101, so that the slip jaws 303 clamp both sides of the casing entering the support base 101, realizing the second fixation, thereby realizing the double fixation of the pipe sleeve;

[0055] When cleaning is required, the pipeline valve connected to the flushing connector 102 is opened, the inner cavity of the support base 101 is filled with water through the water supply pipeline, and the water is drained through the flushing connector 102 on the other side of the support base 101, so that most of the impurities can be carried away by the water flow, ensuring the stability of the inner cavity of the support base 101 during use and the reliability of the subsequent assembly at the same time.

[0056] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims

1. A casing head hanger, characterized in that: include: Suspension seat (1); A suspension pipe portion (2) is arranged on the suspension seat (1); The slip parts (3) are provided in at least one group and are arranged on the suspension seat (1); The suspension seat (1) comprises: Support seat (101); At least one set of flushing connectors (102) is provided and connected to the support seat (101); The hanging pipe part (2) comprises: A suspension sleeve (201) is arranged on the support seat (101); An internal thread joint (202) connected to the suspension sleeve (201); The slip portion (3) comprises: A mounting seat (301) is disposed on the supporting seat (101); The oil cylinder (302) is arranged on the mounting seat (301); The slip (303) is located in the support seat (101) and connected to the oil cylinder (302); The guide rod (304) is inserted into the mounting seat (301) and connected to the slip (303).

2. A casing head hanger according to claim 1, characterized in that: The internal thread joint (202) is inserted into the support seat (101), and the suspension sleeve (201) is mounted on the top of the support seat (101) via a flange.

3. A casing head hanger according to claim 2, characterized in that: The mounting seat (301) is fixed to the supporting seat (101).

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